Weight loss can be accomplished by any number of
means including surgery, jaw-wiring, eating only one food (I've seen
bananas, hot dogs, Twinkies and ice cream all used as single-food diets
that resulted in short term weight loss), or significant
calorie-restriction. The goal of most people who are trying to lose
weight isn't solely to weigh less, but to get a normal physiology and
recapture lost health and vitality that became worse with increased
weight. So any study that establishes simply that a strategy creates
weight loss is interesting but not compelling unless one can establish
in addition that 1) the weight loss is sustained, 2) the patients health
improves by some objective measures related to outcomes and not just
lab test results (for example, fewer heart attacks, strokes, cancers,
cases of diabetes or osteoporosis) 3) the diet is nutritionally replete
and doesn't cause unwanted side effects.
While the Atkins diet does seem to cause a weight
loss of ten to fifteen pounds in most patients, it hasn't been shown in long-term
studies to be superior to other calorie-restricted diets.
The American Heart Association is pretty clear cut:
The
American Heart Association doesn't recommend high-protein diets for
weight loss. Some of these diets restrict healthful foods that provide
essential nutrients and don't provide the variety of foods needed to
adequately meet nutritional needs. People who stay on these diets very
long may not get enough vitamins and minerals and face other potential
health risks. ...
A
healthy diet that includes a variety of foods and is rich in fresh
fruits and vegetables along with regular physical activity can help most
people manage and maintain weight loss for both cardiovascular health
and appearance. The American Heart Association urges people to take a
safe and proven route to losing and maintaining weight. By paying
attention to portion size and calories and following our guidelines, you
can enjoy healthy, nutritionally balanced weight loss for a lifetime of
good health.
So is the American Cancer Society, their web page emphasizes limiting red meat and eating at least 2 1/2 cups of fruit and vegetables daily.
A
healthy diet will increase energy and vitality. This alone is a very
good reason to adopt it, that it can help you lose weight is simply a
by-product of the quality of the food.
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