Many lifestyle and medical factors can cause low energy, including anemia, low testosterone, and an unbalanced diet. Some causes are unique to males or are more common in males than females.

This means more energy reaches the surface of the Earth near the equator. And that causes the lower part of the atmosphere, where weather occurs, to be both warmer and have higher pressure on ...

In women, this may include PMS, pregnancy, or menopause. But stress or health conditions may also be causes. If you’ve ever felt angry or frustrated within moments of feeling happy or elated ...

Cigarette smoke contains harmful chemicals that irritate the airways, damage lung tissue, and reduce lung function. Smoking can also cause airway remodeling, a process in which lung tissue increases ...

Here's what medical experts want you to know about the causes of hair loss and how to treat them. Wearing a hat won't make you bald in and of itself, Thacker says. Need a break? Play the USA TODAY ...