Three Reasons To Stop Yo-Yo Dieting
Photo Credit: ppdiaporama, via Flickr Creative Commons
Year after year, polls put weight loss among the top New Year’s resolutions. It’s a worthwhile goal, but not if you opt for a crash diet. Many people know that crash diets usually lead to gradual weight gain, but did you know that this yo-yo dieting isn’t just bad for your waistline? It could be dangerous for your overall health.
Yes, that’s right—it’s better to gain weight than to yo-yo
The latest diet craze could even be setting you up for heart disease. In November, a team led by Dr. Somwail Rasla of Memorial Hospital of Rhode Island, presented research to the American Heart Association that followed nearly 160,000 women past childbearing age for just over 11 years.
If a woman began the study at a normal weight, repeatedly losing and gaining weight over that time period, she was three and a half times more likely to die of a sudden heart attack. She was also 66% more likely to die of heart disease that crept up over time. A regime of 500 to 1,000 calories a day—in other words, a crash diet– led to shifts in body fluids that threw off the balance of potassium, calcium and magnesium. This imbalance, researchers concluded, could be behind sudden cardiac death in susceptible middle-aged women.
On the other hand, if a woman simply gained weight, she wasn’t more likely to die of heart disease. Yes, that’s right—it’s better to gain weight than to yo-yo.
Surprisingly, in this study, yo-yo dieting didn’t lead to more heart disease deaths among women who were overweight or obese. Even so—and I’d like to see follow-up research on that point—yo-yo dieting didn’t do them any favors.
The appeal of crash diets is simple to understand. They make it easy to quickly lose 10-20 pounds, and you get a little honeymoon when you feel amazing and look great. But these diets hurt you in three ways.
1.You Lose Muscle
Your body normally uses fat for energy. When you cut your calories or carbohydrates too low, your body is forced to break down muscle as well. The lower number on the scale reflects a loss of muscle as well as fat. If you regain, you’ll get back the fat but not the muscle.
2. Your Metabolism Slows Down
Most of us eventually lean back on our old habits and the pounds creep on. According to a 2009 study by a Texas team published in the International Journal of Exercise Science, the ratio of fat and muscle not only tips towards more fat, but we also experience more overall inflammation and a less desirable cholesterol profile.
Because you have less muscle, which uses more energy than fat, your body begins to slow down. Another 2009 study published in PLoS One by researchers at Pennington Biomedical Research Center in Baton Rouge found that your body reacts as if you were living through a period of famine. You naturally become less active, which makes sense for survival in wartime or a drought. But in modern life, it means that you’re less healthy. It also means that it will be harder to lose weight the next time, which is an all-too-familiar experience for lifetime yo-yo dieters.
2.You Feel Stressed
A team of psychologists reported in the May, 2010 issue of Psychosomatic Medical Journal that the wear and tear on your body from yo-yo dieting triggers a rise in cortisol, the telltale hormone associated with anxiety. In the long run, this anxiety will hurt your goal of a stable, healthy weight.
Change Your Life Instead
Getting off the dieting roller coaster doesn’t mean you’re doomed to an unhealthy weight. The key is deciding that you’re going to live a healthy life. In validated research, Dr. Dean Ornish and his team have established that a low-fat, whole food, plant-based diet, along with regular exercise, stress management and social support is a successful strategy for sustainable weight loss.
The average patient in the 12-week Ornish Lifestyle Medicine program loses 14 pounds over that period and reports being 20 pounds thinner after a year. At the same time, our patients protect themselves against heart disease, early stage prostate cancer, diabetes. Ornish Lifestyle Medicine also promotes longevity by increasing the length of your telomeres, which are the ends of chromosomes that control cell aging.
Now this seems like a New Year’s resolution worth trying!