Winterize Your Immune System

Don’t Let Winter Get You Down!


The relationship between vitamin D status and the strength of the immune system is a hot topic. Actually a steroid hormone more than a vitamin, vitamin D is made by the skin after exposure to the ultraviolet radiation of the sun. Because the sun’s angle of incidence outside the tropics is considerably lower in winter, the skin’s response is too weak to manufacture sufficient stores of this vital nutrient.

In the early 1980’s, British physician R. Edgar Hope-Simpson proposed a relationship between solar radiation and the seasonality of influenza. Without sunlight, the skin does not produce vitamin D, deficiency of which is common in winter. This steroid hormone has considerable influence on immunity, where is prevents excess expression of inflammation and is able to, “…stimulate the expression of potent anti-microbial peptides, which exist in neutrophils, monocyytes, natural killer cells, and in epithelial cellls lining the respiratory tract, where they play a major role in protecting the  lung from infection.” (Cannel 2006)…

Read full article at the Body Bio.


Vitamin D Receptor Linked to Elevated Breast Cancer Risk in Marin County?

Aaron Sankin in Huffington Post

SAN FRANCISCO — For decades, researchers have puzzled over a paradox: why does Marin Country, consistently ranked as healthiest county in all of California, have such a shockingly high incidence of breast cancer?

In a study published online earlier this week and scheduled to appear in the November issue of the Journal of the American College of Surgeons, researchers working at University of California San Francisco and Oklahoma City’s InterGenetics, Inc. examined the San Francisco suburb’s elevated rate of breast cancer. They found it can likely be attributed to a genetic variation in a vitamin D receptor that may be more widespread in Marin women than in the greater population as a whole.

Read complete article.

Read other articles:

Marin breast cancer linked to vitamin D receptor?

Vitamin D receptor linked to cancer

Marin County’s high breast cancer rate may be tied to genetics

Marin breast cancer study probes vitamin D link