Why Dieting and Exercise May Not Be Enough to Fight Obesity
Because the body works to defend its set point, dieting and exercising are rarely effective in helping people with obesity to achieve and maintain a healthy weight long term. Even for the obese person who is on a diet, the body thinks it’s being starved and its survival instincts kick in. As a result, the body is driven to store energy-rich body fat and can’t lose weight easily.
A landmark Swedish study found that on average, a 200-pound patient fighting obesity with diet and exercise alone would only be able to achieve a sustained weight loss of four pounds over 20 years. 95% of obese people who lose weight with a rigorous weight-loss program will regain the weight (or more) within two to five years.Source: Ethicon