Decrease fertility of sperm

One study presented at the ASRM summit, conducted jointly by a fertility center in New Jersey and a fertility center in Spain, found that the percentage of nearly , male infertility patients whose total motile sperm count TMSC numbered more than 15 million sperm counts below which are considered low, according to the Mayo Clinic decreased from 85 percent in the —05 period to 79 percent in the period of — The percentage of patients whose TMSC clocked in between zero and 5 million, meanwhile, increased from 9 percent to more than The researchers found that total sperm count, sperm concentration, and TMSC all decreased over time from to —except in New York City, where all three parameters held steady. In Boston, too, the researchers note, sperm count held steady, while concentration and TMSC declined. Taken together, the two studies suggest that men who are already experiencing issues with infertility are experiencing further decreases in viable sperm—but fertile men are experiencing decreases in viable sperm, too. Read: The overlooked emotions of sperm donation.
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Fertility and the Aging Male

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Study: Men's Sperm Counts Continue to Decline - The Atlantic

We know about the harmful effects of drinking while pregnant , but what about drinking before pregnancy? And how does drinking affect male fertility? Is it a big deal? Should you even worry about it? Alcohol, even in moderate amounts, can affect your sexual health. It can lead to loss of libido and infertility in both men and women.
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What causes watery semen, and does it affect fertility?

Why age matters for men and women who want to have a family. We all know someone who had a healthy baby in their late 30s or early 40s. But of all people who try for a baby at a later age, many will not have the baby they hoped to have. Across a population, women younger than 35 and men younger than 40 have a better chance of having a child than people who are older.
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