As you age, the drop-off of your libido is inevitable. The body's production of sex drive-fueling hormones begins to slow while men begin developing more estrogen and women more testosterone. A major breaking point for women is menopause, when the libido takes a sharp drop.

Cysts are fluid-filled sacs that may occur inside the testicle. Most of them are probably benign. To rule out anything abnormal, you may want to follow up with your doctor. He should let you know if indeed they could pose health issues such as infertility.

Men who have trouble fathering children often suffer from low sperm count and poor sperm motility. Sperm count is measured by determining the number of sperm in one milliliter of semen. A sperm count of less than 40 million/mL is regarded as less than normal and will typically result in fertility problems.

Extenze is a popular supplement for male enhancement. The manufacturer, Biotab Nutraceuticals, offers some very ambitious marketing claims.

AARP magazine celebrates 90210 star Luke Perry's 50th birthday, showing him aging gracefully and embracing aging,

The circulatory system includes the heart, arteries, veins and capillaries. Also known as the cardiovascular system, this network carries oxygen and nutrients to the body. It also transports waste products to the kidneys, liver and lungs for elimination.

Amino acids are the building blocks of protein. Athletes take these substances to gain strength and size, according to an October 2009 review in "Critical Care Medicine." Some amino acids increase the production of testosterone.

Diabetes causes changes in blood sugar levels that can occur suddenly, especially after eating. While most diabetics focus on how high their blood sugars rise after eating, a sudden drop in blood sugar, called hypoglycemia, can also cause serious problems.

With the introduction of Viagra and other male enhancement medications, many men (and women) have become intrigued with the prospects of overcoming their sexual afflictions. Herbs present a natural over-the-counter solution to sexual enhancement for men, boosting libido and helping harness testosterone.

Sex drive -- also known as libido -- is a natural part of the body's maturation process that starts around puberty. If all goes well, both men and women will have an elevated sex drive well into adulthood. But if your wife happens to have a low sex drive, this can eventually lead to a problem with your relationship.

Hot flashes, which can cause you to alternatively fling off extra coverings and huddle under them just minutes later, are more commonly associated with menopause than pregnancy. But pregnancy can also cause hot flashes; both hormonal changes and other factors can contribute to hot flashes in pregnancy.

Gingerbread men were first introduced by Queen Elizabeth I, who would have gingerbread cookies made in the likeness of her guests. While these treats tend to make their appearance during the Christmas season, you can enjoy these sweet and spicy cookies at any time.