Essential for bone and mineral metabolism, it has been found to affect other systems, including the cardiovascular, muscular, endocrine and nervous. But only for those with genuine deficiency, vitamin D supplementation have significant benefits.

A blood test will show your vitamin D levels...

Whey protein has been shown to help aging men increase or preserve muscle mass, which is very important for mobility and overall health. To find out if you should use it, work out whether or not you are not eating enough regular protein.

Several scientific reviews have shown daily multivitamins to have a weak effect on preventing heart attacks and improving cognition. Instead of taking one pill that can't possibly fit every person's daily requirements, it’s recommended to supplement specific deficiencies or needs.

If you're...

Often linked to good heart health, it’s been recently suggested by studies that those with the lowest levels of fish oil (specifically EPA and DHA) have the highest risk of heart disease. Research also suggests that it helps with brain development and also mental illnesses.

Given its safety...