An international unit, or IU, is used to measure fat-soluble vitamins. Vitamins A, D and E are measured using international units to calculate recommended intakes, deficiencies and toxicities for healthy people. Recommendations vary based on age and gender.

Though you don't have to study for a stress test, you should prepare your body as much as possible. A stress test is used to evaluate the mechanics and functionality of your heart.

When you think of guava trees (Psidium guajava), its flavorful fruit probably comes to mind. But the young leaves of the guava tree can be brewed to make a tea that's been part of traditional medicine for centuries in Mexico and parts of South America.

Essential oils are used in the practice of aromatherapy to treat a number of health problems, including skin rashes and skin irritation. It is believed that some essential oils possess properties that are beneficial in reducing the symptoms associated with skin rashes.

When Amanda Saxon found out her pap came back abnormal, her doctor told her not to worry. A woman her age would have no trouble clearing the human papillomavirus, the likely culprit. So the then-21-year-old college student from Tampa, Florida, went back to her normal routine.

Water retention occurs when fluid is held in the body, rather than being released as urine. Water retention can make you feel bloated and can occur in the legs, abdomen, ankles, breasts, fingers and even underneath the eyes.

Adrenaline is another word for the hormone epinephrine, part of the brain's response to exercise. Epinephrine has an effect on your body to increase the cardiorespiratory activity that facilitates exercise. It also has an affect on your metabolism and can even improve your mood.

An abrasion, also called a scrape or graze, is a wound to the superficial layer of the skin. Abrasions are usually caused by trauma, such as a fall, that grinds or scrapes away the skin surface.

Toddlers often are picky eaters and possess unpredictable eating behaviors. From age 1 to 4, toddlers are developing food preferences that may influence their appetite. Vitamin and mineral deficiencies also can contribute to a poor appetite.

Whether you're a strict caffeine abstainer or just want to limit your late-day intake to ensure a good night's sleep, it's helpful to know what foods contain this stimulating ingredient. While some sources are obvious, others might surprise you. Amounts vary broadly, even among similar foods.

The best way to get vitamins is by eating a well-balanced diet. In addition to your daily diet, your doctor may recommend taking a multivitamin supplement as another source of these important nutrients.

MayoClinic.com ranks nuts as one of five top foods to lower your cholesterol, so you can put almonds on your heart-healthy food list. But almonds, like most nuts, contain a lot of calories. If you eat too many and gain weight, you could raise your cholesterol levels. The U.S.