Food inc research

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Food inc research

Health effects[ edit ] Risks of malnutrition[ edit ] The term "calorie restriction" Food inc research used in gerontology refers to dietary regimens that reduce calorie intake without incurring malnutrition. In some studies, low body weight has been associated with increased mortality, particularly in late middle-aged or elderly subjects.

Low body weight in the elderly can be caused by pathological conditions associated with aging and predisposing to higher mortality such as cancer, chronic obstructive pulmonary disorder, or depression or of the cachexia wasting syndrome and sarcopenia loss of muscle mass, structure, and function.

As a result, the Flegal study underestimated the risks from obesity and overestimated the risks of leanness. In addition, mental development and physical changes to the brain take place in late adolescence and early adulthood that could be negatively affected by severe caloric restriction. Lowering the temperature may prolong the lifespan of cold blooded animals.

Mice, which are warm blooded, have been engineered to have a reduced core body temperature which increased the lifespan independently of calorie restriction.

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Hormesis Some research has pointed toward hormesis as an explanation for the benefits of caloric restriction, representing beneficial actions linked to a low-intensity biological stressor such as reduced calorie intake. This argument seems to be supported by recent work studying hormones.

Prolonged severe CR lowers total serum and free testosterone while increasing sex hormone binding globulin concentrations in humans; these effects are independent of adiposity. Sirtuin-mediated mechanism[ edit ] Preliminary research indicates that sirtuins are activated by fasting and serve as "energy sensors" during metabolism.

First, it was found that in yeast without SIR2, calorie restriction did not impart longevity in yeast; [41] second, in Sir2 mutants an abundance of extra-chromosomal ribosomal DNA circles that typically limit lifespan has been observed, and that mitigation of these circles restore regular life span, but still are resistant to calorie restriction-mediated longevity; [42] [43] third, that caloric restriction increases the activity of Sir2 in vivo.

Caloric restriction mimetic Work on the mechanisms of caloric restriction has given hope to the synthesizing of future drugs to increase the human lifespan by simulating the effects of calorie restriction.

In particular, the large number of genes and pathways reported to regulate the actions of caloric restriction in model organisms represent attractive targets for developing drugs that mimic the benefits of CR without its side effects.

One proponent of the view that the gene Sir2 may underlie the effect of calorie restriction in mammals by protecting cells from dying under stress. Ancient medicine, the province of Hippocrates and Galen after him, taught that the very fat were destined to die suddenly more often than the slender.

Avicenna taught the elderly to eat less than when they were young.

Food inc research

Please review the contents of the section and add the appropriate references if you can. Unsourced or poorly sourced material may be challenged and removed. September Humans[ edit ] Studies have been conducted to examine the effects of calorie restriction with adequate intake of nutrients in humans; however, long-term effects are unknown.

Many studies were undertaken on budding yeast and fission yeast to analyze the cellular mechanisms behind increased longevity due to calorie restriction.

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First, calorie restriction is often called dietary restriction because the same effects on life span can be achieved by only changing the nutrient quality without changing the number of calories.

Data from Guarente and others showed that genetic manipulations in nutrient-signaling pathways could mimic the effects of dietary restriction. In some cases, dietary restriction requires mitochondrial respiration to increase longevity chronological agingand in some other cases not replicative aging.

Nutrient sensing in yeast controls stress defense, mitochondrial functions, Sir2, and others.Product Description. Food, Inc. lifts the veil on our nation's food industry, exposing how our nation's food supply is now controlled by a handful of corporations that .

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