I always figured infertility to be when a couple just couldn't get pregnant at all. Apparently, there's a specific amount of time included. By definition, infertility is the inability of a couple to achieve a pregnancy after twelve months of unprotected intercourse (http://health.yahoo.com/health/encyclopedia/001191/0.html). Couples who have been pregnant before, but are not able to achieve another pregnancy have what is called "secondary infertility."
About 40% of the time, the inability to get pregnant is due to male problems, such as hormone deficiency, the effects of a sexually transmitted disease, or decreased/low sperm count. Sperm count can be greatly affected by the constant use of marijuana, or certain prescription drugs.
Not to leave out the females, they account for the other 40% of couples not able to get pregnant. Also, from sexually transmitted diseases, hormone imbalance, even poor nutrition. Either both partners may cause the remaining 20%, or no cause can be identified.
About 15 of every 100 couples may not be able to conceive after attempting for a year. If both male and female are healthy and under the age of 30, there's still only a 25-30% chance each month that they'll get pregnant. In a woman's life, her peak fertility is in her early 20's. As she ages, especially after the age of 40, her chance for conceiving drops down to less than 10% per month.
It is estimated that 50% to 75% of infertility cases can be prevented through changes in lifestyle (http://www.somersetmedicalcenter.com/194.cfm). Maintaining your proper body weight is one way to do this. If you are severely over, or underweight, your hormonal function could be disrupted. Another is to stop smoking. Not only should we not smoke in the first place, but smoking is harmful to your ovaries, messing with their ability to...