Getting to know your body through regular testicular self-exams can help you spot changes early. A urologist breaks down what ...

Hormones play a role in every aspect of our lives, from our energy and stress levels, sex drive, to thirst and hunger.

Natural changes in menstrual cycle hormones (estradiol) may influence women's daily physical activity, offering new insights ...

Meeting the minimum requirement for vitamin B12, needed to make DNA, red blood cells and nerve tissue, may not actually be enough -- particularly if you are older. It may even put you at risk for ...