According to many surveys Vitamin D deficiency rises as a global health problem in many countries and its consequences affect men and women worldwide. If human body has not sufficient Vitamin D, it cannot absorb calcium, thus the most common consequence induced by a lack of Vitamin D is osteoporosis. Normal levels of Vitamin D have been found to prevent malignant tumours of prostate, colon, breasts and ovaries, while low levels of Vitamin D have been linked with high incidence of cancers of the digestive system in male population.

Vitamin D is close related to natural sun exposure. It is generated by human skin when the sunlight touches it and no supplement can replace the effect of sun exposure. As rays of natural sunlight cannot go through glass, nobody can produce vitamin D when sitting in the car or home.

Studies revealed with no doubt that people living in countries situated far from equator (US, Canada, Great Britain) experi

ence the Vitamin D deficiency because they need a longer sun exposure. Statistics show that about 40% of the United States population is vitamin D deficient and indicate that in Great Britain the majority of adult population are in the same condition.

People with dark skin pigmentation are prone to Vitamin D deficiency as they need about 20 times as much exposure to sunlight as fair-skinned people in order to produce the same amount of vitamin. This fact explains why among black men prostate cancer is epidemic.

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