But your blood type might be the key to assessing risk for certain health conditions, especially heart disease, which is the leading cause of death in the US. Invisible differences in the blood ...

Your blood type and its connection to your heart is more important than you think. Here's what it may mean for your health.

Physical clues, like a pounding heart and feeling shaky ... such as feeling irritable or sad. This is why it's important to know the mental warning signs of low blood sugar.