Reduce energy bills with a sky tunnel and SAD

It appears, through years’ long studies of people who live in sunnier climates and people who are exposed to sunlight through their work situations, that sunlight can actually decrease risk of colon and breast cancer.

In another study, patients who were put in hospital rooms that were sunny requested less pain medication than patients in windowless rooms. Whether the pain is lessened by the sunlight or the patients’ awareness of their pain levels decreased during the study is unclear.

Sunlight provides the body with the means to produce Vitamin D. Vitamin D helps the body in various biological functions: It promotes calcium absorption, which in turn deters bone loss; it may help maintain a healthy immune system; it could possibly be a part of the process of cell differentiation.

Partly Quoted from http://www.hotfact.com/benefit_of_sunlight.html