https://blogs.mercola.com:443/sites/vitalvotes/archive/2004/08/30/Sunshine-Can-Increase-Your-Muscle-Growth.aspxIt is well documented that vitamin D helps prevent osteoporosis. Most doctors are only familiar with its role in that area and are clueless about vitamin D's ability to treat the top two killers in the US, heart disease and cancer and also to addressenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)