"If a younger man believes that you have to be old to die from prostate cancer, and then he is diagnosed with the disease, he may think that he doesn't have to worry," reports the website. "He may then avoid or delay treatment for years, based on this erroneous assumption. Don't make the same mistake."

Tight Hats Cause Baldness

It doesn't take much Internet searching to debunk this long-held myth. From Snopes.com to Men's Health, there is tons of information out there decrying this one. Yet, it lives on.

The website www.hair-styles.org theorizes that the myth got its start in the military when young men entering the service were required to wear hats and soon showed signs of thinning hair. But the connection was more likely mere coincidence, since the age the men enter the military is also the same age that male pattern hair loss generally begins.

Men Don't Get Osteoporosis

Like breast cancer, this is one myth that survives because the disease is much more prevalent among women. But while women are four times more likely to develop osteoporosis than men, one out of eight men over the age of 50 is at risk.

According to the National Osteoporosis Foundation, the disease in men is under-diagnosed, under-reported and inadequately researched. The foundation recommends a diet rich in calcium and vitamin D to combat the disease and cautions against smoking and excess use of alcohol.

Shave Close To Prevent Ingrown Hairs

In reality, the opposite is actually much more likely. If you cut your beard too close, the stubble could turn in on itself, drilling into the pore its growing from and inflaming the skin, according to Men's Fitness.

The website recommends men who experience problems with ingrown facial hair switch to an electric razor or grow a light, well-trimmed beard instead. You should be sure to shave in the direction your beard grows and never forcibly dig or yank out ingrown hairs by the roots, instead using a sterile needle or forceps to tease out and unfold the hair.

Cholesterol Is Always Bad

Although much attention has been paid to cholesterol levels, and rightfully so considering it is the leading cause of death among men, not all cholesterol is "bad."

Healthy levels of cholesterol are an important part of a healthy body, according to the American Heart Association. Your body needs cholesterol to produce cell membranes and certain hormones and it also plays an important role in other bodily functions as well.

There are two main types of blood cholesterol: LDL (the "bad" cholesterol) and HDL (the "good" cholesterol). Diets that are high in saturated fats and cholesterol raise the levels of LDL cholesterol in the blood. On the other hand, monounsaturated fats and polyunsaturated fats found in nuts and fish can actually lower the LDL level.

Men Think About Sex Every 7 Seconds

Who knows where this one got started, but it sure sounds right. Right? Wrong.

As Dr. Aaron Carroll of Indiana University and the co-author of "Don't Swallow your Gum: Myths, Half-truths and Outright Lies About Your Body and Health" explains, that 7 seconds figure is about the same amount of time we go between breaths. It seems next to impossible that guys could think about sex as often as they breathe.

In one of the nation's most comprehensive surveys about sexual habits in the United states, completed by Edward Laumann and colleagues in 1994, 43 percent of men reported thinking about sex not even once a day, but rather somewhere between a couple times a week to a couple times a month.