The most important health decision you could ever make is to maintain optimal levels of vitamin D.

In a collaborative report involving 488 scientists from 50 countries aiming to better understand the root cause of diseases, their patterns and global impact, it was discovered that of the 30 leading causes of premature mortality (including cancer, neurological, cardiovascular and auto immune diseases), 19 have been linked to low vitamin D status!
In fact, according to a study published in the American Journal of Clinical Nutrition a few years ago, it estimates that by normalizing vitamin D levels in the general population, the US healthcare system would save at least $130 billion annually on medical expenses. The beauty of vitamin D status is that it is really easy normalize either through responsible sun exposure, dietary changes or supplementation.