Source: Thailand Medical News  Jan 19, 2020  3 years ago
Study Shows That Fish Oil Supplements Helps Males To Be More Fertile and To Have Larger Testicles
Study Shows That Fish Oil Supplements Helps Males To Be More Fertile and To Have Larger Testicles
Source: Thailand Medical News  Jan 19, 2020  3 years ago
A new study by researchers from the University of Southern Denmark indicates that couples struggling to get pregnant might want to add a little more fish in their diet. Young males and middle aged males who take fish oil supplements appear to have better sperm quality and higher testosterone levels than those who don't, as well as larger testicles, the researchers report.

Though it wasn't tested as part of the study, all these male reproductive factors should lead to overall improved fertility in young men taking fish oil, said lead researcher Dr Tina Kold Jensen, a Professor of Environmental Medicine at the University of Southern Denmark.
Dr Jensen told Thailand Medical News, "Because they have a better sperm count, as a group they would have a better chance of fertilizing an egg."
Typically, fertility supplements haven't always had a great track record. For instance, supplements containing zinc and folic acid don't appear to boost male fertility despite their reputation, according to a study published this month in the Journal of the American Medical Association.
So too, this latest study can't prove a direct cause-and effect link between fish oil and the improvements in sperm counts and testosterone levels, much less an improvement in overall fertility, noted Dr Albert Salas-Huetos, a postdoctoral researcher of male infertility at the University of Utah School of Medicine in Salt Lake City.
Dr Salas-Huetos, who wrote an editorial accompanying the study added, "With one observational study, it's impossible to recommend fish oil to a general population. Well-designed randomized clinical trials are necessary to establish a causal relationship."
The research findings and editorial were published in the journal JAMA Network Open.
However, Dr Jensen arguedthat there's reason in the data to believe that the omega-3 fatty acids in fish oil had a direct effect on sperm count and testosterone levels.
Typically, sperm cells contain a lot of omega-3 fatty acid, so it would make sense that increasing your intake would lead to healthier sperm, Dr Jensen said.
The research involved nearly 1,700 young Danish men who reported for a compulsory medical examina tion between 2012 and 2017 to determine their fitness to serve in the military.
Dr Jensen added, "They were healthy 18- or 19-year-old men with no diseases and no knowledge of their fertility."
The medical researchers offered the men $74 to complete an additional questionnaire and provide semen and blood samples.
Approximately 6% of the men reported using fish oil supplements within the past three months, and half of those said they'd taken them 60 or more days during that period, researchers said. These men had significantly higher semen volume and total sperm count, researchers found. Interestingly, the study found no significant difference in sperm quality when they looked at men taking other sorts of daily supplements, Dr Jensen said.
Dr Jensen added, "The men who took multivitamins or B vitamins or C vitamin didn't have the same effect. To me, that points to the fact that it could be the fish oil and not just the healthiness of the men or their healthier lifestyle."
Dr Jensen added that she would expect to see the same effect in older men taking fish oil supplements
Two past clinical trials found that older men had better sperm counts after 14 weeks of eating nuts as a means of improving their omega-3 intake, Dr Jensen said.
Dr Jensen said she would definitely recommend taking fish oil supplements to try and improve male fertility.
She added, "It would be even better to eat more fish, to make sure you have a healthy diet with a lot of fish included."
Dr Salas-Huetos said the new study is an important step in figuring out the factors that influence male fertility.
Dr Salas-Huetos added, "As you know, human sperm quality has declined worldwide in the last 50 years. It's really important to find the factors that are associated with human semen decline. Pollution, smoking, alcohol, lack of physical activity, stress and unhealthy diets have been associated with a decline in semen quality.”
Reference: Associations of Fish Oil Supplement Use With Testicular Function in Young Men
Tina Kold Jensen, PhD; Lærke Priskorn, PhD; Stine A. Holmboe, PhD; et al
JAMA Netw Open. 2020;3(1):e1919462. doi:10.1001/jamanetworkopen.2019.19462


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