Lecithin, a substance present in the cell membranes of all living things, contains fatty acids, phosphatides and phosphorous compounds. Although supplemental lecithin has been used as a treatment option for various health conditions, scientific evidence on the safety of the supplement during pregnancy is lacking.

A pulled bicep muscle can be excruciatingly painful, limiting your mobility and causing swelling in your arm. Before you begin rehabilitation exercises, though, you'll need to check with your doctor to ensure you don't have a broken bone, torn tendon or a serious muscular injury that requires surgery.

A bunion is a deformity that most often occurs at the base of your big toe, causing swelling, pain and difficulty in walking. Poorly fitted shoes, injury and even genetics play a role in whether you will develop bunions, reports MayoClinic.com. In some cases, bunions arise as a symptom of arthritis.

Although no one likes to admit they have it, jock itch, a symptom of a fungus overgrowth, can result in a maddening itch in the genital region.

Gout is a form of arthritis resulting from excessive buildup of uric acid in your body. The salt, called irate, from excess uric acid causes crystals to form in your joints, leading to pain and inflammation. An affected joint usually becomes shiny, swollen and stiff, and it can be red or purple in color.

Diarrhea is often a symptom of other medical conditions and is relatively common. It is characterized by loose, watery stools and may be caused by a viral or bacterial infection, food intolerances, food poisoning, certain medications and other gastrointestinal disorders.

Orange juice contains natural sugar that will cause your blood sugar levels to rise after drinking it. Diabetics and people with hypoglycemia are often instructed to drink a glass of orange juice if blood sugar levels are low.

Constipation is a common digestive ailment that results when a person has infrequent or difficult bowel movements. Bowel movements vary between individuals; however, constipation is generally classified as having fewer than three bowel movements a week with excretions consisting of small, hard stools.

When you're all caught up in your tennis match, nothing else matters but the thrill of competition. When you race across your end of the court to thwack the ball over the net, all you're interested in is the look on your opponent's face when you score a point. What you don't notice until after the game is knee pain.

Many hormones are moving throughout your bloodstream and organs, carrying chemical messages. These include melatonin, insulin, testosterone, progesterone and estrogen. Hormones play a critical role in metabolism and reproduction, and they also affect mood.

The body needs to make red blood cells, among other functions. Most people get enough iron through their diet, but some people require iron supplements to achieve adequate levels of iron.

There are several different reasons why a woman’s estrogen levels can drop such as stress or certain medications. Other health conditions like menopause or polycystic ovarian syndrome can also cause severe drops in estrogen levels.