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Fad diets and obesity--Part III: a rapid review of some of the more popular low-carbohydrate diets.

Low-carbohydrate books continue to be some of the biggest selling publications in the United States. However, what are the similarities and differences between some of the most popular books? This overview of what some of these books advocate or discourage is important to better facilitate the discussion between the health professional and the patient interested in some of these methods. Regardless of the low-carbohydrate diet discussed with patients and whether or not health professionals agree or disagree with this approach, it is imperative that health professionals at least learn the basics of some of the more popular diets to facilitate better communication between the practitioner and patient.

Diet Fads↗

[Diet fads].

Explore the source record for details and available documents.

Adult↗

Kwashiorkor in the United States: fad diets, perceived and true milk allergy, and nutritional ignorance.

BACKGROUND: Kwashiorkor is the edematous form of protein-energy malnutrition. It is associated with extreme poverty in developing countries and with chronic malabsorptive conditions such as cystic fibrosis in developed countries. Rare cases of kwashiorkor in affluent countries unrelated to chronic illness have been reported. We present 12 cases of kwashiorkor unrelated to chronic illness seen over 9 years by pediatric dermatologists throughout the United States, and discuss common causative themes in this easily preventable condition. OBSERVATIONS: Twelve children were diagnosed as having kwashiorkor in 7 tertiary referral centers throughout the United States. The diagnoses were based on the characteristic rash and the overall clinical presentation. The rash consisted of an erosive, crusting, desquamating dermatitis sometimes with classic "pasted-on" scale-the so-called flaky paint sign. Most cases were due to nutritional ignorance, perceived milk intolerance, or food faddism. Half of the cases were the result of a deliberate deviation to a protein-deficient diet because of a perceived intolerance of formula or milk. Financial and social stresses were a factor in only 2 cases, and in both cases social chaos was more of a factor than an absolute lack of financial resources. Misleading dietary histories and the presence of edema masking growth failure obscured the clinical picture in some cases. CONCLUSIONS: Physicians should consider the diagnosis of kwashiorkor in children with perceived milk allergies resulting in frequent dietary manipulations, in children following fad or unorthodox diets, or in children living in homes with significant social chaos. The presence of edema and "flaky paint" dermatitis should prompt a careful dietary investigation.

Diet Fads↗

Fad reducing diets: separating fads from facts.

Generally, it is wise to stay away from any crash diet. All tend to be nutritionally unbalanced. Although all may cause great temporary weight losses in short periods of time, over the long term, the only thing they accomplish is the addition of another cycle of frustration and disappointment for the dieter.

Diet Fads↗

Dietary treatments of obesity.

Numerous dietary treatments that purport to promote something unique for stimulating weight loss have been published. These treatments include fad diets, diets formulated by various commercial slimming clubs, very-low-energy diets (VLCD) and conventional diets. Fad diets may possibly reduce some weight short-term; however, there is no scientific basis to their long-term use. Commercial slimming clubs may be suitable for some individuals but they need to be properly assessed professionally. There are specific guidelines for the use of VLCD, which are only appropriate for short-term use. There is scientific evidence to suggest that conventional diets can produce both short- and long-term weight loss. A successful weight-loss programme depends on a multidisciplinary team approach. Management strategies should be devised for addressing issues such as goals, monitoring, follow-up, relapse and evaluation. Initial assessments should include medical, laboratory and anthropometric data, fitness level and dietary and behavioural attitudes. These results will form the basis of the treatment plan. Frequent visits to the clinic are fundamental in promoting continuing weight loss during the long-term maintenance stage of treatment. The visits should be made worthwhile for the patient. Realistic and attainable goals for diet, exercise and behaviour modification should be made. The diet should have a novel approach and be tailored to the needs of the patient. It should be adequate nutritionally, low in energy and fat. The overall aim should be to promote lifelong changes in lifestyle, improvement in quality of life and health risks.

Anthropometry↗

Disorders of fuel metabolism: medical complications associated with starvation, eating disorders, dietary fads, and supplements.

Disorders of fuel metabolism as they relate to abnormal fuel intake,abnormal fuel expenditure, and dietary supplements are the focus of this article. The emergency physician should be aware of the medical complications that can occur as a result of starvation states,eating disorders, fad diets, hypermetabolic states, and ergogenic aids. Knowledge and understanding of the complications associated with these disorders will facilitate the diagnosis and management of patients who present to the emergency department with any of the disorders reviewed.

Adolescent↗

Pandemic obesity and the contagion of nutritional nonsense.

The United States is the epicenter of an obesity pandemic. As more countries acculturate to a Western lifestyle, rates of obesity and its sequelae are rising steadily in both adults and children. In response, a variety of weight-loss diets emphasizing alternative distributions of macronutrient classes have been promoted with considerable success. Among the most popular is the so-called "Atkins Diet," in which carbohydrate restriction is touted as the key to weight loss. Despite claims, however, evidence that weight loss is enhanced by means other than caloric restriction is lacking. Also lacking is evidence that fad diets produce sustainable weight loss. Most important, fad diets generally ignore or refute what is known about fundamental associations between dietary pattern and human health. Cancer, cholera, and AIDS induce rapid weight loss, highlighting the potential incompatibility of weight loss by any means with health. Available data suggest that long-term weight loss is most consistently achieved by adherence to a fat-restricted diet abundant in grains, vegetables, and fruit, along with regular physical activity, a lifestyle notably conducive to the promotion of overall health. Fad diets, potential harms of which are well characterized, should be presumed "guilty" of incompatibility with human health until or unless proved otherwise; the burden of proof should reside with proponents. In the interim, the clinical and public health communities should work to empower individuals with knowledge needed to reconcile weight control with health promotion; support policies that mitigate obesogenic environmental conditions; and offer unified resistance to the contagion of dietary propaganda.

Bias↗

Unconventional eating practices and their health implications.

The authors discuss a number of unconventional or faddist foods and eating practices and their health implications. Among the topics included are vegetarianism, Zen macrobiotic diets, fast foods, junk foods, megavitamins and their toxicity, health foods, fad diets in infancy, and elimination diets.

Adolescent↗