Stepping past 40, navigating body shifts becomes important for men. A big change often involves your hormone levels, like ...

How Much Sun Do You Need for Vitamin D? If you're using sunscreen and plan to be outside anyway, brief sun exposure may help with vitamin D production. Research shows that about 10 minutes of midday ...

How Much Vitamin D Is Too Much? The recommended dietary allowance (RDA) for vitamin D is 600 international units (IU) per day for adults. This can generally be achieved through the food in your diet, ...