Supplement Shorts: D3

Dodge disease and stay Happy with Viamin D3

Blood levels of certain nutrients drop as we age, slowing production of mood-boosting neurotransmitters. Luckily, scientists have discovered that upping your intake of the "sunshine" vitamin makes you 40% less likely to suffer from age-related depression! It boosts your brain's production of serotonin, the most important mood-regulating chemical. It also boosts immune systems as we age, slashing our risks of getting sick up to 50%.

Aim for a 2,000-IU supplement daily, or spend 15 minutes in the sun without sunscreen.