He said dietary intake of carbohydrate and protein is known to promote muscle protein synthesis, he said.

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In the UK "between October and May virtually no-one makes vitamin D because of the sunlight" regardless of your skin colour, so Vitamin D levels are dependent on dietary intake, he said.

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To date, individuals who suffer from LPL deficiency have had little choice but to highly regulate their dietary fat intake lest they end up in the hospital.

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Many other factors that have been studied do not seem to affect the risk of breast cancer (dietary fat intake, cigarette smoking, past oral contraceptive use, exposure to electromagnetic fields).

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In an editorial in the same journal, Dr John Baron, of Dartmouth Medical School in New Hampshire, said short-term studies appeared to suggest there was no effect from high dietary fibre intake on bowel cancer risk.

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Although not large, this difference in cholesterol concentration is comparable to that achieved in studies involving alteration of intake of dietary fat or cholesterol.

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Investigators in Spain randomized 7447 people at high risk for cardiovascular disease to one of three diets: a Mediterranean diet supplemented with extra-virgin olive oil, a Mediterranean diet supplemented with nuts, or a control diet for which people were advised to lower their intake of dietary fat.

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