According to the WHO, overweight and obesity kill more people worldwide than being underweight. With obesity comes a range of comorbid conditions, including cardiovascular diseases, type 2 diabetes, joint and muscular disorders, psychological issues, and many more. Weight loss has been shown to improve the symptoms of such diseases.

However, due to the difficulty of losing weight using traditional methods, people have started using complementary and alternative therapies (CATs). Even though fewer studies have reported on CATs, they have shown that acupuncture, hypnotherapy, and dietary supplements can promote weight loss in some people.