Impotence can be caused by a disruption at any stage in this series of events. Certain diseases, including diabetes and muscular dystrophy can cause impotence. Psychological factors can also lead to impotence. And, impotence can be a side effect of some common medications.
A 13-year-old's science fair project helped the discovery along, researchers say
Monitor your child's driving whenever possible. Set ground rules for unsupervised driving: no alcohol, tobacco or other drugs; no cell phone use while driving; always wear seat belts.
Restrict night driving by 16-year-olds. Their accident rates are twice as high for each mile driven at night as in daytime.
Don't rely solely on high school driving classes. There's no proof they produce safer drivers or prevent accidents. Check your teen's driving skills by riding as a passenger with him or her.
Limit the number of teen and other non-family passengers. They distract new drivers and may encourage risks, such as swerving or running a light.
Pull your teen's license if he or she drinks and drives, speeds or gets a traffic ticket.