Fitness for Geeks by Bruce W. Perry

Author:Bruce W. Perry [Bruce W. Perry]
Language: eng
Format: epub, pdf
Tags: Core Programming, Personal & Professional Development
Publisher: O'Reilly Media, Inc.
Published: 2012-04-23T16:00:00+00:00

Note

A recent study in the British Journal of Nutrition examined the vitamin-D levels of two traditional cultures that live near the equator and spend a lot of time outside—the Maasai and Hadzabe hunter-gatherers of Tanzania in East Africa. The mean vitamin-D level (25(OH)D) in the blood of about 60 study participants, men and women, was 115 nmol, or about 46 ng/ml, all obtained naturally by exposure to sunlight. The people typically avoided the sun at its strongest, during midday. “Populations with traditional lifestyles having lifelong, year-round exposure to tropical sunlight might provide us with information on optimal vitamin D status from an evolutionary perspective,” according to the study.4

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