CORVALLIS, Ore. – An Oregon State University researcher has reviewed the body of evidence around weight loss supplements and has bad news for those trying to find a magic pill to lose weight and keep it off – it doesn’t exist.
Melinda Manore reviewed the evidence surrounding hundreds of weight loss supplements, a $2.4 billion industry in the United States, and said no research evidence exists that any single product results in significant weight loss – and many have detrimental health benefits.
The study is online in the International Journal of Sport Nutrition and Exercise Metabolism.
A few products, including green tea, fiber and low-fat dairy supplements, can have a modest weight loss benefit of 3-4 pounds (2 kilos), but it is important to know that most of these supplements were tested as part of a reduced calorie diet.
“For most people, unless you alter your diet and get daily exercise, no supplement is going to have a big impact,” Manore said.