A cholecystectomy is the surgical procedure that involves removal of the gallbladder, and over half a million people a year have this procedure. The gallbladder collects bile, which is a fluid produced by the liver that aids in digestion.

If your eyes swell after exercise, you need to see a physician, especially if you have other symptoms such as trouble breathing or hives. You may be suffering from a literal allergy to exercise, a condition that can proceed rapidly to a serious allergic reaction, according to the University of Maryland Medical Center.

Hyperextension of the knee can result in injuries that cause pain in the back of the knee, or posterior knee pain. Pressure that forces the knee backward beyond its normal position results in knee hypertension, which can damage the cartilage, ligaments and other parts of the knee.

Lunges and squats are great exercises for strengthening the muscles in your thighs, hips and buttocks. Since lunges and squats are low impact activities, these exercises can be good choices for those who cannot handle more vigorous forms of exercise.

When you or your child scratch an eye, it can be a frightening situation. Whether it is due to a fingernail, piece of dirt, contact lens or paper cut, having a scratch in such a tender area can get you rattled.

Acetaminophen (Tylenol) is one of the most commonly used over-the-counter medicines. It is typically used as a pain reliever and fever reducer. Despite being over-the-counter, taking too much acetaminophen can have serious consequences, including permanent liver damage and death.

Progesterone is a steroid hormone made primarily in the ovaries but also by the placenta during pregnancy. Progesterone acts with other female hormones, such as estrogen, to maintain female reproductive health and female sex characteristics.

A good exercise program helps patients with spinal stenosis slow the progress of the disorder. For many, spinal stenosis is acquired from or worsened by other medical conditions such as osteoporosis.

Swimming usually leaves you invigorated and refreshed, but sinus headaches that result from swimming make you feel as if you are still underwater after you finish your workout. Plugged sinus cavities lead to infections and increased pressure and headaches.

Traction alopecia occurs when the hair is being pulled too hard from the follicle, which results in hair breakage and alopecia--hair loss. Traction alopecia, according to Traction-alopecia.com, can be fully reversible if detected early enough; however, if it is extensive, the hair loss can be permanent.

Salvia or Salvia Divinorum is a natural herbaceous perennial plant of the sage family that produces white flowers at the peak of its growth in summer seasons. An uprising trend has been discovered among teens and experimental drug users with smoking and using the leaves of the drug to reach a "high"

According to the Higher Education Center for Alcohol and Other Drug Prevention, nearly one-third of all Americans have tried marijuana at some point in their lives. Marijuana, also called pot or weed, is considered a gateway drug that leads to harder drugs with more serious consequences.