Our Summary
This research paper reviews existing studies on how Roux-en-Y gastric bypass (RYGB) surgery can impact a person’s desire to eat certain types of foods. Some studies suggest that after RYGB surgery, people tend to shift towards a diet with less energy-rich foods, which can help them lose weight. This change might occur because the surgery reduces the pleasure or satisfaction (known as the “hedonic drive”) derived from eating highly enjoyable or tasty foods. The research examines various aspects contributing to this hedonic drive, including food preferences, how rewarding food feels, how the brain’s reward system reacts, and dopamine signaling (a neurotransmitter involved in pleasure and reward). Most studies agree that RYGB surgery reduces the hedonic drive to consume highly enjoyable foods. However, the authors argue that more research is needed that combines psychological and sociological perspectives to fully understand these changes, including studies that objectively measure actual food choices.
FAQs
- Does Roux-en-Y gastric bypass surgery affect food preferences and the drive to consume certain foods?
- What are some of the postoperative changes in eating behavior after a Roux-en-Y gastric bypass surgery?
- How does a decrease in the hedonic drive to consume highly palatable foods contribute to weight loss after a gastric bypass surgery?
Doctor’s Tip
One helpful tip a doctor might give a patient about gastric bypass surgery is to focus on making healthier food choices with a lower energy density. This can help with successful weight loss after the surgery. Additionally, understanding and acknowledging changes in food preferences and the reinforcing value of food can be important for maintaining long-term success. It may also be helpful to work with a healthcare provider or nutritionist to create a balanced and sustainable meal plan.
Suitable For
Patients who are typically recommended gastric bypass surgery are those who have a body mass index (BMI) of 40 or higher, or a BMI of 35 or higher with obesity-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnea. Additionally, patients who have tried and failed to lose weight through diet and exercise may also be recommended for gastric bypass surgery.
Timeline
Before gastric bypass surgery, a patient typically undergoes a series of medical evaluations, consultations with healthcare professionals, and psychological assessments to determine if they are a suitable candidate for the procedure. They may also be required to make lifestyle changes, such as following a specific diet or engaging in physical activity, to prepare for surgery.
After gastric bypass surgery, the patient will experience significant changes in their eating habits and behavior. In the immediate postoperative period, they will be on a liquid or pureed diet before gradually transitioning to solid foods. They will also need to adapt to eating smaller portions and avoiding certain foods that can cause discomfort or complications.
Over time, the patient will likely experience rapid weight loss and improvements in obesity-related health conditions such as diabetes and high blood pressure. They may also undergo physical and psychological changes, including increased energy levels, improved body image, and changes in their relationships with food.
It is important for patients to attend regular follow-up appointments with their healthcare team to monitor their progress, receive support, and address any potential challenges or complications that may arise. With proper adherence to dietary guidelines, lifestyle changes, and ongoing support, patients can achieve long-term success and improved quality of life after gastric bypass surgery.
What to Ask Your Doctor
- How will my diet need to change after gastric bypass surgery?
- Will I need to take any supplements or vitamins after surgery?
- What are the potential risks and complications of gastric bypass surgery?
- How much weight can I expect to lose after surgery?
- Will I need to make any lifestyle changes, such as exercise or counseling, post-surgery?
- How will my relationship with food change after gastric bypass surgery?
- Will I still be able to enjoy eating after surgery, or will my taste preferences change?
- How can I prevent weight regain after surgery?
- How often will I need to follow up with you after surgery?
- Are there any support groups or resources available for patients who have undergone gastric bypass surgery?
Reference
Authors: Hansen TT, Jakobsen TA, Nielsen MS, Sjödin A, Le Roux CW, Schmidt JB. Journal: Obes Surg. 2016 Aug;26(8):1946-55. doi: 10.1007/s11695-016-2217-x. PMID: 27173820