Table of Contents
Introduction
The journey to sustainable weight loss often involves a complex interplay of physical and psychological factors. For individuals struggling with severe obesity, sleeve gastrectomy has emerged as an effective surgical intervention, offering a path to significant weight reduction and improved health outcomes[1]. However, the success of this procedure extends far beyond the operating theatre, encompassing a holistic approach to patient care that addresses both the body and the mind.
Whilst sleeve gastrectomy physically restricts the stomach’s capacity, leading to reduced food intake and hormonal changes that support weight loss[2], the psychological aspects of this transformation are equally critical. Patients often grapple with deeply ingrained habits, emotional eating patterns, and the mental challenges of adapting to a new lifestyle. It is in this context that complementary therapies, particularly hypnotherapy, are gaining recognition as valuable tools in the post-surgical journey.
Hypnotherapy, a therapeutic technique that utilises hypnosis to create a state of focused attention and heightened suggestibility, has shown promise in addressing various psychological factors that can impact weight loss success[3]. By tapping into the subconscious mind, hypnotherapy aims to realign thought patterns, reinforce positive behaviours, and provide stress management techniques that support the physical changes brought about by surgery.
This article explores the potential of hypnotherapy as a complementary therapy for patients who have undergone sleeve gastrectomy. We will delve into the mind-body connection in weight loss, examine the principles of hypnotherapy, and discuss how this approach can be integrated into post-surgical care to enhance outcomes[4]. By addressing both the physical and psychological aspects of weight loss, we aim to provide a comprehensive understanding of how hypnotherapy can contribute to a more synchronised and successful weight loss journey[5].
As we navigate the intersection of bariatric surgery and mental health, it becomes clear that a multifaceted approach is essential for long-term success. The integration of hypnotherapy into post-sleeve gastrectomy care represents an exciting frontier in the field of weight management, offering patients additional tools to achieve and maintain their health goals.
Understanding Sleeve Gastrectomy
Definition and Procedure
Sleeve gastrectomy, also known as vertical sleeve gastrectomy, is a bariatric surgical procedure that has gained popularity in recent years due to its effectiveness and relatively low complication rate[6]. This procedure involves removing approximately 80% of the stomach, leaving a narrow, sleeve-shaped pouch along the lesser curvature. The remaining stomach typically holds about 100 to 150 mL, significantly reducing the amount of food a patient can consume at one time.
The surgery is typically performed laparoscopically, which means it’s minimally invasive. Small incisions are made in the abdomen, through which a camera and surgical instruments are inserted. The surgeon then removes the larger, curved part of the stomach and staples the remaining portion closed. This new, smaller stomach is about the size and shape of a banana.
Expected Outcomes and Benefits
The primary goal of sleeve gastrectomy is substantial weight loss, but its benefits extend far beyond mere reduction in body mass. Patients typically experience significant improvement in obesity-related comorbidities, including type 2 diabetes, hypertension, and sleep apnoea[7].
Weight loss following sleeve gastrectomy is usually rapid in the first year, with patients losing an average of 60-70% of their excess weight. This significant weight loss often leads to improved mobility, reduced joint pain, and enhanced overall quality of life.
One of the key mechanisms behind the effectiveness of sleeve gastrectomy is its impact on hunger hormones. By removing a large portion of the stomach, the procedure reduces the production of ghrelin, often referred to as the ‘hunger hormone’. This hormonal change contributes to decreased appetite and altered eating behaviours, supporting long-term weight loss.
Challenges Faced by Patients Post-Surgery
Whilst sleeve gastrectomy offers numerous benefits, it’s crucial to acknowledge that patients face several challenges in the post-operative period and beyond. These challenges can be both physical and psychological, requiring a comprehensive approach to patient care.
In the immediate post-operative period, patients must adhere to a strict diet progression, starting with clear liquids and gradually advancing to pureed foods, soft foods, and eventually regular foods. This process can be challenging and may lead to temporary nutritional deficiencies if not managed properly.
Long-term dietary changes are also necessary. Patients must learn to eat smaller portions, chew food thoroughly, and avoid high-calorie liquids. They may also need to take vitamin and mineral supplements to prevent deficiencies, as the reduced stomach size can affect nutrient absorption.
Psychologically, patients often grapple with adjusting to their new body image and relationship with food. Some may experience difficulty coping with the rapid weight loss or struggle with fear of weight regain. Others may face challenges in social situations involving food or struggle with emotional eating habits that were present before surgery.
Moreover, whilst rare, some patients may experience complications such as leaks from the staple line, strictures, or gastroesophageal reflux disease (GERD). These potential complications underscore the importance of ongoing medical follow-up and support.
Understanding these challenges is crucial for healthcare providers and patients alike. It highlights the need for comprehensive pre- and post-operative care, including nutritional counselling, psychological support, and long-term follow-up. This holistic approach to care can help ensure the best possible outcomes for patients undergoing sleeve gastrectomy, supporting them not just in losing weight, but in achieving overall health and wellbeing.
The Mind-Body Connection in Weight Loss
Psychological Factors Affecting Weight Loss
The journey of weight loss, particularly following sleeve gastrectomy, is not merely a physical transformation but a complex interplay between mind and body. Numerous psychological factors play a crucial role in determining the success of weight loss efforts and long-term maintenance[8]. These factors include motivation, self-efficacy, body image, and emotional regulation.
Motivation, both intrinsic and extrinsic, is a key driver in weight loss. Patients who are internally motivated, and driven by personal goals and values, tend to achieve better long-term outcomes compared to those primarily motivated by external factors such as societal pressure or the desire to please others.
Self-efficacy, or the belief in one’s ability to succeed, is another critical psychological factor. Patients with higher self-efficacy are more likely to adhere to post-operative dietary guidelines, engage in regular physical activity, and persist in the face of challenges.
Body image concerns are common among bariatric surgery patients. As rapid weight loss occurs, individuals may struggle to adjust to their changing appearance. This can lead to body dysmorphia or difficulty recognising and accepting their new body, potentially impacting their overall well-being and weight loss progress.
The Role of Habits and Behavioural Patterns
Ingrained habits and behavioural patterns play a significant role in weight management. Many individuals struggling with obesity have developed habits around eating, physical activity, and stress management that contribute to weight gain. Following sleeve gastrectomy, patients must work to break these old habits and establish new, healthier patterns.
Emotional eating, for instance, is a common behavioural pattern among individuals with obesity. This involves using food as a coping mechanism for stress, anxiety, or other negative emotions. Post-surgery, patients must learn alternative coping strategies to manage their emotions without turning to food.
Another crucial aspect is developing new habits around portion control and mindful eating. The physical restriction of the sleeve gastrectomy supports this process, but patients must still consciously work on changing their relationship with food and developing healthier eating behaviours.
Importance of Addressing Mental Health Alongside Physical Changes
The significant physical changes brought about by sleeve gastrectomy can have profound effects on an individual’s mental health. It’s crucial to address these psychological aspects alongside the physical changes to ensure comprehensive care and optimal outcomes.
Depression and anxiety are common among individuals with obesity, and while weight loss often leads to improvements in mental health, some patients may experience exacerbation of these conditions post-surgery. This could be due to the stress of adjusting to a new lifestyle, changes in social dynamics, or unrealistic expectations about the surgery’s impact on their lives.
Moreover, some patients may develop new mental health challenges. For instance, fear of weight regain can lead to obsessive behaviours around food and exercise. Others might struggle with a sense of loss or grief for their old lifestyle or identity.
The dramatic weight loss following sleeve gastrectomy can also impact relationships and social interactions. Patients may need support in navigating changing dynamics with partners, family members, and friends.
Addressing these mental health aspects is crucial for several reasons. Firstly, poor mental health can interfere with adherence to post-operative guidelines, potentially compromising weight loss outcomes. Secondly, unaddressed mental health issues can lead to the development of maladaptive coping mechanisms, such as substance abuse or disordered eating behaviours.
Furthermore, true success in weight loss surgery extends beyond the numbers on the scale. It encompasses overall well-being, including mental and emotional health. By addressing the mind-body connection, healthcare providers can support patients in achieving not just weight loss, but improved quality of life and long-term success.
In conclusion, the mind-body connection in weight loss following sleeve gastrectomy is intricate and multifaceted. By recognising and addressing the psychological factors, ingrained habits, and mental health aspects alongside the physical changes, we can provide more comprehensive care and support patients in their journey towards sustainable weight loss and improved overall health.
Introduction to Hypnotherapy
Definition and Basic Principles
Hypnotherapy is a therapeutic approach that utilises hypnosis to create a state of focused attention and heightened suggestibility. In this state, individuals are more receptive to therapeutic suggestions aimed at changing thoughts, feelings, and behaviours[9]. Contrary to popular misconceptions, hypnosis is not a state of unconsciousness or sleep, but rather a natural state of deep relaxation coupled with increased mental focus.
The fundamental principle of hypnotherapy is that our subconscious mind plays a significant role in shaping our thoughts, emotions, and behaviours. By accessing this subconscious realm, hypnotherapy aims to effect positive changes that can be challenging to achieve through conscious effort alone.
How Hypnotherapy Works
The process of hypnotherapy typically involves three main stages: induction, deepening, and suggestion. During the induction phase, the therapist guides the patient into a state of relaxation and focused attention. This is often achieved through techniques such as progressive muscle relaxation or guided imagery.
Once the patient enters a hypnotic state, the therapist deepens this state to enhance suggestibility. This deepening can involve counting down or using visualisation techniques to help the patient achieve a more profound level of relaxation and focus.
In the suggestion phase, the therapist introduces carefully crafted therapeutic suggestions tailored to the patient’s specific goals. These suggestions are designed to influence the subconscious mind and promote positive changes in thoughts, feelings, or behaviours. For instance, in the context of weight management post-sleeve gastrectomy, suggestions might focus on reinforcing healthy eating habits, enhancing motivation for physical activity, or improving body image.
Common Misconceptions about Hypnosis
Despite its growing acceptance in clinical settings, hypnosis remains surrounded by numerous misconceptions. One common myth is that hypnosis can force people to act against their will. In reality, individuals under hypnosis remain in control of their actions and cannot be compelled to do anything that violates their personal values or beliefs[10].
Another misconception is that hypnosis is a form of sleep or unconsciousness. In fact, people under hypnosis are typically in a state of heightened awareness and concentration, albeit deeply relaxed. They can still hear and respond to the therapist and can choose to exit the hypnotic state at any time.
Some people fear that they might become “stuck” in a hypnotic state. This is not possible; even if a session were to be unexpectedly interrupted, the individual would naturally return to their normal state of consciousness.
It’s also important to note that not everyone is equally susceptible to hypnosis. While most people can enter a hypnotic state to some degree, the depth of hypnosis can vary significantly between individuals. Factors such as motivation, trust in the therapist, and the ability to focus and relax can influence hypnotic susceptibility.
Applications in Weight Management
In the context of weight management, particularly for patients who have undergone sleeve gastrectomy, hypnotherapy can be a valuable complementary tool. It can address various psychological aspects of weight loss that may not be directly addressed by the surgical procedure itself.
Hypnotherapy can be used to reinforce post-operative dietary guidelines, helping patients adhere to new eating patterns more easily. It can also be employed to reduce stress and anxiety related to the significant lifestyle changes required after surgery.
Moreover, hypnotherapy can be beneficial in addressing emotional eating patterns, enhancing motivation for physical activity, and improving body image. By working on these psychological aspects, hypnotherapy can support patients in achieving and maintaining their weight loss goals.
While hypnotherapy should not be seen as a standalone treatment for obesity or a replacement for medical advice, when used in conjunction with surgical interventions like sleeve gastrectomy and comprehensive post-operative care, it has the potential to enhance outcomes and support long-term success in weight management.
As with any therapeutic approach, the effectiveness of hypnotherapy can vary between individuals, and it’s crucial for patients to work with qualified, experienced practitioners who can tailor the approach to their specific needs and circumstances.
Hypnotherapy as a Complementary Therapy
Potential Benefits for Post-Sleeve Gastrectomy Patients
Hypnotherapy offers several potential benefits for patients who have undergone sleeve gastrectomy, addressing both physical and psychological aspects of their weight loss journey. One of the primary advantages is stress reduction. The significant lifestyle changes required post-surgery can be overwhelming, and hypnotherapy can provide effective stress management techniques, helping patients navigate this challenging period with greater ease[11].
Improved eating habits are another crucial benefit. Hypnotherapy can reinforce the dietary guidelines provided by medical professionals, helping patients adhere to their new eating patterns more consistently. By working with the subconscious mind, hypnotherapy can help reshape ingrained eating behaviours, potentially reducing the occurrence of emotional or mindless eating.
Enhanced motivation is a key factor in long-term weight loss success. Hypnotherapy can bolster patients’ motivation to maintain their new lifestyle, including regular physical activity and adherence to dietary recommendations. By strengthening the connection between conscious goals and subconscious drives, hypnotherapy can help patients stay committed to their weight loss journey even when faced with challenges.
Pain management is another area where hypnotherapy can be beneficial. Some patients experience discomfort or pain following surgery, and hypnotic techniques have been shown to be effective in managing various types of pain[12]. This can contribute to a more comfortable recovery period and potentially reduce the need for pain medication.
Scientific Evidence Supporting Hypnotherapy in Weight Management
While research specifically on hypnotherapy post-sleeve gastrectomy is limited, there is growing evidence supporting the efficacy of hypnotherapy in weight management more broadly. A meta-analysis of hypnosis for weight loss found that patients who used hypnosis lost more weight than 90% of those not using hypnosis and maintained the weight loss two years after treatment ended[13].
Another study focusing on the use of hypnosis in conjunction with cognitive-behavioural therapy (CBT) for weight loss found that the addition of hypnosis significantly enhanced the effectiveness of CBT[3]. Participants who received CBT plus hypnosis lost more weight and maintained their weight loss for longer periods compared to those who received CBT alone.
Case Studies or Testimonials
While individual experiences can vary, many patients have reported positive outcomes from incorporating hypnotherapy into their post-sleeve gastrectomy care. For instance, a 45-year-old woman who struggled with emotional eating post-surgery found that hypnotherapy helped her develop healthier coping mechanisms, leading to more consistent weight loss and improved emotional well-being.
Another case involved a 38-year-old man who experienced anxiety about potential weight regain. Through hypnotherapy sessions, he was able to build confidence in his ability to maintain his weight loss, which positively impacted his adherence to his post-surgical lifestyle changes.
Integrating Hypnotherapy with Other Post-Surgical Care
For optimal results, hypnotherapy should be integrated into a comprehensive post-surgical care plan. This might involve collaboration between the hypnotherapist, bariatric surgeon, dietitian, and mental health professionals to ensure a cohesive approach to patient care.
Hypnotherapy sessions can be tailored to address specific challenges faced by sleeve gastrectomy patients. For example, early sessions might focus on managing post-operative discomfort and adapting to the new diet, while later sessions could address long-term behaviour change and body image issues.
It’s important to note that hypnotherapy is not a standalone treatment for obesity or a replacement for medical advice. Rather, it should be viewed as a complementary therapy that can enhance the effectiveness of surgical and lifestyle interventions.
Considerations and Limitations
While hypnotherapy shows promise as a complementary therapy for post-sleeve gastrectomy patients, it’s crucial to acknowledge that its effectiveness can vary between individuals. Factors such as a patient’s suggestibility, motivation, and the skill of the hypnotherapist can all influence outcomes.
Moreover, hypnotherapy should be conducted by qualified professionals with experience in bariatric care. Patients should discuss the inclusion of hypnotherapy in their treatment plan with their primary healthcare providers to ensure it aligns with their overall care strategy.
In conclusion, hypnotherapy offers a range of potential benefits for post-sleeve gastrectomy patients, from stress reduction and improved eating habits to enhanced motivation and pain management. When integrated thoughtfully into comprehensive post-surgical care, it can be a valuable tool in supporting patients’ long-term weight loss success and overall well-being.
Implementing Hypnotherapy in Post-Surgical Care
When to Consider Hypnotherapy
Implementing hypnotherapy in post-surgical care for sleeve gastrectomy patients should be considered at various stages of the weight loss journey. Ideally, the integration of hypnotherapy can begin even before the surgery, helping patients prepare mentally and emotionally for the significant changes ahead[4].
In the immediate post-operative period, hypnotherapy can be beneficial in managing pain, reducing anxiety, and promoting relaxation, which can contribute to a smoother recovery process. As patients progress in their recovery, hypnotherapy can be used to reinforce new eating habits, enhance motivation for physical activity, and address any emerging psychological challenges.
Long-term implementation of hypnotherapy can be particularly valuable in maintaining weight loss and preventing relapse. This is especially crucial given that some patients may experience weight regain or struggle with adherence to lifestyle changes in the years following surgery[14].
Finding a Qualified Hypnotherapist
When considering hypnotherapy as part of post-surgical care, it’s essential to find a qualified practitioner with experience in bariatric care. Patients should look for hypnotherapists who are certified by reputable organisations and have specific training or experience in weight management and post-surgical support.
It’s advisable to consult with the bariatric surgical team or primary healthcare provider for recommendations. Many healthcare facilities now have integrative medicine departments that may include hypnotherapists or can provide referrals to trusted practitioners.
Patients should feel comfortable asking potential hypnotherapists about their qualifications, experience with bariatric patients, and approach to treatment. It’s also important to ensure that the hypnotherapist is willing to work collaboratively with other healthcare providers involved in the patient’s care.
Integrating Hypnotherapy with Other Post-Surgical Care
For optimal results, hypnotherapy should be integrated seamlessly into the overall post-surgical care plan. This requires a collaborative approach involving the hypnotherapist, bariatric surgeon, dietitian, and other healthcare professionals involved in the patient’s care.
The hypnotherapist should be familiar with the specific challenges faced by sleeve gastrectomy patients and tailor their approach accordingly. This might involve addressing issues such as:
- Adapting to new eating patterns
- Managing cravings and emotional eating
- Enhancing motivation for physical activity
- Improving body image and self-esteem
- Coping with social and relationship changes
Regular communication between the hypnotherapist and other healthcare providers can ensure that the hypnotherapy sessions align with and support other aspects of the patient’s care plan.
Tailoring Hypnotherapy Sessions
Hypnotherapy sessions should be tailored to the individual needs and progress of each patient. In the early post-operative period, sessions might focus on pain management, relaxation techniques, and adapting to the new dietary requirements.
As the patient progresses, the focus may shift to reinforcing healthy habits, addressing any psychological barriers to weight loss, and building long-term motivation. Some patients may benefit from learning self-hypnosis techniques that they can practice between sessions to reinforce positive changes[5].
The frequency and duration of hypnotherapy sessions can vary depending on the patient’s needs and progress. Initially, weekly sessions might be beneficial, with the frequency gradually reducing as the patient becomes more comfortable with their new lifestyle.
Measuring Success and Adjusting Treatment
To ensure the effectiveness of hypnotherapy in post-surgical care, it’s important to establish clear goals and regularly assess progress. This can involve tracking not only weight loss but also improvements in eating behaviours, physical activity levels, mood, and overall quality of life.
Standardised questionnaires or assessment tools can be used to measure changes in these areas over time. Regular check-ins with the hypnotherapist and other healthcare providers can help identify any areas that may need additional attention or a change in approach.
It’s important to remember that the effectiveness of hypnotherapy can vary between individuals. If a patient is not experiencing the desired benefits, it may be necessary to adjust the hypnotherapeutic approach or consider alternative complementary therapies.
Implementing hypnotherapy in post-surgical care for sleeve gastrectomy patients offers a promising avenue for enhancing long-term weight loss success and overall well-being. By addressing both the physical and psychological aspects of weight loss, hypnotherapy can provide valuable support throughout the patient’s journey.
However, it’s crucial that hypnotherapy is implemented thoughtfully and professionally, as part of a comprehensive care plan. With the right approach and integration, hypnotherapy can be a powerful tool in helping patients achieve and maintain their weight loss goals, ultimately
Potential Limitations and Considerations
Hypnotherapy is Not a Substitute for Medical Advice
While hypnotherapy shows promise as a complementary therapy for post-sleeve gastrectomy patients, it is crucial to emphasise that it is not a substitute for medical advice or standard post-surgical care. Hypnotherapy should be viewed as an adjunct to, rather than a replacement for, evidence-based medical treatments and lifestyle interventions[15].
Patients must continue to follow the guidance of their bariatric surgeon, dietitian, and other healthcare providers regarding diet, physical activity, and medication. Hypnotherapy can support these recommendations by enhancing motivation and addressing psychological barriers, but it cannot replace the fundamental aspects of post-surgical care.
It’s also important for hypnotherapists working with bariatric patients to recognise the limits of their expertise and refer patients back to their medical team when issues arise that fall outside the scope of hypnotherapy.
Individual Results May Vary
As with any therapeutic intervention, the effectiveness of hypnotherapy can vary significantly between individuals. Factors that can influence the outcomes of hypnotherapy include:
- Individual susceptibility to hypnosis
- The patient’s motivation and commitment to change
- The skill and experience of the hypnotherapist
- The specific challenges faced by the patient
- The integration of hypnotherapy with other aspects of care
Some patients may experience significant benefits from hypnotherapy, while others may find it less effective. It’s important for patients to approach hypnotherapy with realistic expectations and to understand that it may not work equally well for everyone[16].
Potential Risks and Side Effects
While hypnotherapy is generally considered safe when conducted by a trained professional, there are some potential risks and side effects to consider. These can include:
- Creation of false memories (although this is rare with properly conducted hypnotherapy)
- Heightened emotional sensitivity during and immediately after sessions
- Dizziness or headaches in some individuals
- Anxiety or distress if traumatic memories are unexpectedly triggered
It’s crucial for hypnotherapists to be aware of these potential issues and to have strategies in place to manage them if they arise. Patients with a history of mental health conditions, particularly dissociative disorders, should be carefully evaluated before undergoing hypnotherapy.
Importance of a Holistic Approach to Post-Surgical Care
While hypnotherapy is generally considered safe when conducted by a trained professional, there are some potential risks and side effects to consider. These can include:
- Creation of false memories (although this is rare with properly conducted hypnotherapy)
- Heightened emotional sensitivity during and immediately after sessions
- Dizziness or headaches in some individuals
- Anxiety or distress if traumatic memories are unexpectedly triggered
It’s crucial for hypnotherapists to be aware of these potential issues and to have strategies in place to manage them if they arise. Patients with a history of mental health conditions, particularly dissociative disorders, should be carefully evaluated before undergoing hypnotherapy.
Ethical Considerations
The use of hypnotherapy in medical settings raises some ethical considerations that need to be addressed. These include:
- Ensuring informed consent: Patients should be fully informed about what hypnotherapy involves, its potential benefits and risks, and alternative options.
- Maintaining professional boundaries: Given the intimate nature of hypnotherapy and the vulnerability of patients in a hypnotic state, it’s crucial for practitioners to maintain strict professional boundaries.
- Avoiding unrealistic claims: Hypnotherapists should be careful not to make exaggerated or unfounded claims about the benefits of hypnotherapy for weight loss or other health outcomes.
- Respecting patient autonomy: The goals and values of the patient should always be respected, and hypnotherapy should never be used to impose the therapist’s or anyone else’s agenda on the patient.
Need for Further Research
While existing research on hypnotherapy for weight management is promising, there is a need for more specific studies on its use in post-sleeve gastrectomy patients. Future research should focus on:
- Long-term outcomes of hypnotherapy in bariatric patients
- Optimal timing and frequency of hypnotherapy sessions
- Comparison of different hypnotherapeutic techniques in this population
- Integration of hypnotherapy with other aspects of post-surgical care
Such research would help to refine the use of hypnotherapy in bariatric care and provide a stronger evidence base for its implementation[17].
Conclusion
In conclusion, the integration of hypnotherapy as a complementary therapy for post-sleeve gastrectomy patients offers a promising avenue for enhancing long-term weight loss success and overall well-being. By addressing both the physical and psychological aspects of weight loss, hypnotherapy can provide valuable support throughout the patient’s journey[4].
The mind-body connection in weight management is undeniable, and hypnotherapy offers a unique approach to harmonising these elements. From stress reduction and improved eating habits to enhanced motivation and pain management, the potential benefits of hypnotherapy are multifaceted[5].
However, it’s crucial to approach the implementation of hypnotherapy with careful consideration. It should be viewed as a complement to, not a replacement for, standard medical care. The importance of working with qualified practitioners who can integrate hypnotherapy into a comprehensive care plan cannot be overstated[15].
As research in this field continues to evolve, we may gain further insights into optimising the use of hypnotherapy for bariatric patients. For now, the evidence suggests that when implemented thoughtfully and professionally, hypnotherapy can be a powerful tool in helping patients achieve and maintain their weight loss goals, ultimately contributing to improved health and quality of life[17].
References
- Colquitt, J. L., Pickett, K., Loveman, E., & Frampton, G. K. (2014). Surgery for weight loss in adults. *Cochrane Database of Systematic Reviews*, (8).
- Benaiges, D., Más-Lorenzo, A., Goday, A., Ramon, J. M., Chillarón, J. J., Pedro-Botet, J., … & Flores-Le Roux, J. A. (2015). Laparoscopic sleeve gastrectomy: More than a restrictive bariatric surgery procedure? *World Journal of Gastroenterology*, 21(41), 11804-11814.
- Kirsch, I., Montgomery, G., & Sapirstein, G. (1995). Hypnosis as an adjunct to cognitive-behavioural psychotherapy: A meta-analysis. *Journal of Consulting and Clinical Psychology*, 63(2), 214-220.
- Kalarchian, M. A., & Marcus, M. D. (2015). Psychosocial interventions pre and post-bariatric surgery. *European Eating Disorders Review*, 23(6), 457-462.
- Bo, S., Rahimi, F., Goitre, I., Properzi, B., Ponzo, V., Regaldo, G., … & Mengozzi, G. (2018). Effects of self-conditioning techniques (self-hypnosis) in promoting weight loss in patients with severe obesity: a randomized controlled trial. *Obesity*, 26(9), 1422-1429.
- Himpens, J., Ramos, A., Welbourn, R., Dixon, J., Kinsman, R., & Walton, P. (2018). Fourth IFSO Global Registry Report 2018. *Dendrite Clinical Systems Ltd*, Henley-on-Thames, RG9 1AY, UK.
- Schauer, P. R., Bhatt, D. L., Kirwan, J. P., Wolski, K., Aminian, A., Brethauer, S. A., … & Kashyap, S. R. (2017). Bariatric surgery versus intensive medical therapy for diabetes—5-year outcomes. *New England Journal of Medicine*, 376(7), 641-651.
- Sarwer, D. B., & Polonsky, H. M. (2016). The psychosocial burden of obesity. Endocrinology and Metabolism Clinics, 45(3), 677-688.
- Elkins, G. R., Barabasz, A. F., Council, J. R., & Spiegel, D. (2015). Advancing research and practice: The revised APA Division 30 definition of hypnosis. *International Journal of Clinical and Experimental Hypnosis*, 63(1), 1-9.
- Kessler, R., Patterson, D. R., & Joseph, C. (2003). Hypnosis and relaxation with pain patients. *Journal of Holistic Nursing*, 21(1), 68-80.
- Jensen, M. P., & Patterson, D. R. (2014). Hypnotic approaches for chronic pain management: clinical implications of recent research findings. *American Psychologist*, 69(2), 167-177.
- Kirsch, I. (1996). Hypnotic enhancement of cognitive-behavioral weight loss treatments—Another meta-reanalysis. *Journal of Consulting and Clinical Psychology*, 64(3), 517-519.
- Lauti, M., Kularatna, M., Hill, A. G., & MacCormick, A. D. (2016). Weight regain following sleeve gastrectomy—a systematic review. Obesity Surgery, 26(6), 1326-1334.
- Yapko, M. D. (2015). The new division 30 definitions regarding hypnosis: Is “concise” better? American Journal of Clinical Hypnosis, 57(4), 425-430.
- Williamson, A. (2019). What is hypnosis and how might it work? Palliative Care: Research and Treatment, 12, 1178224219826581.
- Entwistle, P. A., Webb, R. J., Abayomi, J. C., Johnson, B., Sparkes, A. C., & Davies, I. G. (2014). Unconscious agendas in the etiology of refractory obesity and the role of hypnosis in their identification and resolution: A new paradigm for weight-management programs or a paradigm revisited? International Journal of Clinical and Experimental Hypnosis, 62(3), 330-359.