Your circulatory system plays a central role in maintaining your health and well-being. Arteries are especially important, carrying nourishing blood from your heart to all your organs and providing them with oxygen and nutrients.

Age is a major factor in the amount of cholesterol in your blood. Being older than 45 years old if you're a man and older than 55 if you're a woman is a "risk factor" for having a cholesterol problem, according to the U.S. government's National Cholesterol Education Program, or NCEP.

Everyone experiences butterflies in the stomach at one time or another. Certain situations or people can cause you to feel excited or nervous, which your body interprets as stress.

When your body loses dramatically more fluids than you take in, or drink, you will suffer from dehydration. Mild to moderate dehydration is treated by increasing the amount of fluids you drink; however, severe dehydration is a life threatening condition that warrants a trip to the emergency room.

According to the U.S. Department of Labor, nursing is the fastest-growing profession in the nation. If you are considering a nursing career—or if you are a registered nurse interested in advanced studies—a Texas college or university may be right for you.

The biceps brachii and triceps brachii are the muscles of your upper arm. The biceps muscle is located on the front of your upper arm and is composed of two heads. The triceps makes up the back of your arm and is made up of three heads.

The herb vitex, otherwise known as vitex agnus-castus, chaste tree or chasteberry, is a distant relative of lemon verbena.

In a competition that pits wheatgrass juice against wheatgrass powder, there are multiple schools of thought about which is more effective. Ann Wigmore, the late founder of the Natural Health Institute in Puerto Rico, strongly supported consuming wheatgrass immediately after juicing the young blades.

Milk thistle, a member of the daisy family, is native to parts of Europe, Africa and the Middle East. Documented use of milk thistle as a remedy for liver ailments goes back to the first century, according to the website Herbal Legacy.

Whether you're trying to conceive or not, the time leading up to your period can be spent either anticipating or dreading the start of it, so you'll know if you're pregnant or not. When conceive a baby, your body begins to produce human chorionic gonadotropin (hCG), which causes you to have pregnancy symptoms.

Bromelain is a combination of enzymes, called proteolytic enzymes, that help your body absorb and assimilate proteins from foods, according to the University of Maryland Medical Center.

In recent years, garlic has been touted as a superfood for improving health and preventing disease. Garlic may provide certain mood-elevating benefits for symptoms of depression, although research confirming this claim is extremely limited.