Stress in Pregnancy May Impact Son’s Fertility Later in Life

A new study, published in the journal Human Reproduction, found that men whose mothers experience stressful events early in pregnancy are more likely to have reduced sperm counts and lower testosterone levels when they become adults.

The study, by researchers at the University of Western Australia, surveyed 2,804 women during different stages in their pregnancies between May 1989 and …

Being Underweight May Impact Male Fertility

A new study, published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology, shows that being underweight may have a detrimental impact on male fertility.

Several prior studies have shown that being overweight can impact male fertility, but this study shows that being underweight might be worse.  Men with a body mass index (BMI) …

Female Reproductive Tract May Reject Weak Sperm

A new study, published in the journal Science Advances, found that the female reproductive tract may trap slower moving sperm, allowing only the fastest moving sperm to reach the egg.

Researchers from Cornell University used several models and computer stimulations to try to better understand how sperm travel through the cervix, into the uterus, and then into the fallopian tubes …

Marijuana May Not Hurt Male Fertility

A new study from Harvard University found that men who smoke marijuana had significantly higher sperm counts than men who do not smoke marijuana.  The findings were published last week in the journal Human Reproduction.

The researchers looked at 662 men at the Massachusetts General Hospital Fertility Center between the years 2000 and 2017.  From the men enrolled in …

New At-Home Male Fertility Test

A new startup company, Dadi, is now offering the first mail-in fertility test for men.  This new fertility test just came onto the market in the continental United States last week. Dadi, a fertility startup company of eight employees, raised approximately 2 million dollars to develop the test and get it onto the market.

The test is essentially a semen …

How Smoking and Drinking Affect Male Fertility

There are many lifestyle factors that can affect male fertility, including smoking and drinking.  Identifying some of these modifiable risk factors can be important for couples, since male infertility plays a role for over one-third of couples who are struggling to conceive.

A review of how smoking and drinking can affect male fertility was recently presented online at UrologyTimes.com by …

Prediabetes May Affect Male Fertility

A new study is providing more evidence that a man’s general health can affect his sperm quality.   The study, published in BJU International, found that infertile men with prediabetes have altered hormone levels and increased sperm DNA fragmentation compared to infertile men without prediabetes.

Researchers from the University Vita Salute San Raffaele in Milan, Italy, examined 744 men with …

Does Diet Affect Sperm Quality?

Multiple recent studies have shown a decline in men’s sperm concentration and total sperm count over the past 80 years, but the underlying cause of this downward trend is unclear.  Most likely, there are multiple factors contributing to this trend, including worsening diets and an increasing number of men with obesity.

A recent review in the journal Fertility and Sterility …

Advances in Male Fertility Testing

A new test developed by Androvia LifeSciences, called a Cap-Score, may help predict whether or not a man’s sperm is able to fertilize an egg.  The Cap-Score was developed by the Travis lab at the Baker Institute for Animal Health and Cornell University’s College of Veterinary Medicine, who recently published their Cap-Score data in the journal Molecular Reproduction and Development

Do Boxers or Briefs Matter?

A new study published in the journal Human Reproduction found that men who wear loose fitting underwear have better sperm counts and motility compared to men who wear tight fitting underwear.

Researchers from Harvard looked at the semen analyses of 656 male partners of couples seeking fertility treatment.   The men were all between 32 and 39 years old.  The type …