You’ve seen many people do it: celebrities, friends, relatives. Yo-yo dieting, also known as weight cycling, refers to the repeated loss and regain of body weight, which can vary from 5-10 pounds to more than 50 pounds. This can occur over a period of several months to several years and can be harmful for your heart and your health.
Why Is Yo-Yo Dieting Dangerous?
Research shows it’s better for your health not to diet at all than to say you’re dieting and steal spoonfuls of crème brûlée during every commercial break. That’s because diets typically promote weight cycling and yo-yo dieting, which is actually more hazardous to your health than keeping a steady overweight weight. Most weight cyclers eventually gain back more weight than they had initially lost because the shame and stress involved with gaining weight can lead to eating more.
Weight cycling may also have negative psychological and behavioral consequences; studies have reported increased risk for mental distress, life dissatisfaction, and binge eating. Some studies have shown that extreme weight cycling can even damage the heart.
One study found that women who were weight cyclers – especially if it occurred five or more times during their life – had a great risk of heart disease beginning shortly after menopause. The researchers believe that the link between weight cycling and heart disease involves the cells that line the blood vessels called endothelial cells. When people gain and lose weight repeatedly, these cells become damaged so blood can’t flow freely. When blood flow to the heart becomes restricted, the stage is set for heart attack and stroke.
Diets and the Power of the Mind
When most of us try to lose weight, we pull out the most powerful weapon we’d like to think we have – our brains – and launch a psychological attack on food. However, the truth is that there are very strong emotional triggers that make us eat and can make most diets fail. Researchers theorize that overeating may act like a drug addiction and trigger the reward centers in our brain. Hence, at points of stress, your brain's neurons may be programmed to combat the stress with food.