Vitamin deficiencies can trigger problems as we age

... the nutrients we need for growth and healthy living, which may lead to physical or mental illness. Consider vitamin D, which promotes calcium absorption, helps protect older adults from osteoporosis and has a role in cell growth and immune function. ...

http://www.chron.com/news/health/article/Vitamin-deficiencies-can-trigger-problems-as-we-4689292.php