Here is a list of scientific reasons for infertility from the article by Psychology Today:
1) Maintain a healthy weight
2) Quit smoking. Smoking can increase your risk of infertility by 60 percent.
3) Avoid alcohol. Two or more drinks a day can increase your risk of infertility by 60 percent.
4) Reduce your caffeine intake
5) Keep away from illegal drugs, including marijuana
The article has additional tips for couples trying to get pregnant.
Story via Psychology Today
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