Heart Problems
Cardiologist and author of “Doctor of the Heart: A Life in Medicine,” Dr. Isadore Rosenfeld has found heart problems associated with diets that restrict intake to less than 1,200 calories a day. When diets encourage low calorie consumption and food restrictions, the heart does not get enough potassium and other minerals it needs to function healthfully. For optimal cardiac health you should not reduce the amount of nutrients you ingest. Temporary diets could result in permanent heart damage and increased heart risk.
Metabolism
Over time, if you participate in yo-yo dieting or crash diets, the lack of food will slow down your metabolism, making it harder to lose weight. At first you may lose a significant amount of weight, but the more diets you undertake, the more extreme they will have to be to yield the same results. Crash diets do not work, and often, as soon as the dieter completes the diet, she will regain the weight she lost and more.
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Weakened Immune System
When you do not get essential nutrients such as calcium, fiber, magnesium, vitamin E, vitamin C, vitamin A and potassium, your immune system cannot fully function and protect your body against infections and bacteria. Crash dieting or shocking the body with an abrupt restriction in food depletes the immune system, and you end up doing more harm than good.
Healthy Alternatives
Instead of going on fad diets, change your lifestyle, establishing healthier habits gradually. Walk with a friend. Join a softball league. Replace soda and high-sugar drinks with water at each meal. Incorporate whole grains, lean meats, fruits and vegetables into your diet. Eat several small portions during the day. These healthy alternatives to dieting will yield weight loss results without threatening your health.
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