Validity: High insulin levels have been linked to diabetes and heart disease. But whether the Zone will lead to weight loss and lower cardiovascular risks depends on the dieter.
Validity of starch effects in the diet
Significantly, two recent developments have given impetus to the starch-free, or a low-starch, diet.
The validity of estimates of energy intake in a group of young women, and the influence of body mass index (BMI) and concern over bodyweight on such estimates, were determined with the aid of a food record intake.
The validity and usefulness of weight loss supplements has long been under heavy scrutiny, mostly because of the fact that there are so many different products for weight loss that don’t actually do anything.
Regardless of the validity of that assertion it is abundantly clear that human beings are omnivores who must decide personally what diet best suits them. Meat or no meat is not really the question.
Associations of race/ ethnicity, education, and dietary intervention with the validity and reliability of a food frequency questionnaire: The Women’s Health Trial Feasibility Study in Minority Populations. Am J Epidemiol 146:856-869.
FDA approved that petition in July 1974, but challenges over the substance's safety and the validity of the company's data kept aspartame from being marketed.
Elizabeth Mayer-Davis, a diabetes researcher, questions the validity of the glycemic index, on which the diet is based.[10] ...
In addition, don't judge the validity of what a person says by how they look. Just because the guy is huge doesn't mean he is spewing pertinent advice for you. Many people that have big physiques are big despite of their training, not because of it.
Some doctors doubt the validity of claims of multiple food sensitivities. Food allergy has been well studied and well documented. Most individuals with a food allergy are allergic to only one food.
"There is tremendous science and validity behind HGH research," Klatz says. "The problem comes when marketeers make unsubstantiated promises." Some claim their products are equal to pharmaceutical grade HGH.
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Perhaps you are unsure about the validity of our assertions, or skeptical that this natural diet is right for you. Our goals are 1) to provide you with the basis for the facts (physiological evidence, clinical findings, and living testimonials) so ...
"Effects of Age on Validity of Self-Reported Height, Weight, and Body Mass Index: Findings from the Third National Health and Nutrition Survey, 1988–1994." Journal of the American Dietetic Association 101(1):28–34.
Whenever you come across a slimming product you need to question both the validity of it and through what mechanism is claims to work. If it is going to put your health in danger, it's usually one that should be avoided.
Yale researcher and author David Katz, MD, questions the validity of recommending a strictly vegan diet.
I would suggest you refer to a basic nutrition text by an author with a degree or two in nutrition and review how food is metabolized. You should stringently question the validity of other persons who may promote a particular nutritional idea based ...
 See also: Health, Diet, Nutrition, Fat, Eating
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