Men with no supplement intake were used as the reference group. Multiple linear regression adjusted for time of blood sample delivery, body mass index, and smoking status. Hormone level measurements were transformed using the natural logarithm and back-transformed, giving percentage change. Conflicts of interest comprise financial interests, activities, and relationships within the past 3 years including but not limited to employment, affiliation, grants or funding, consultancies, honoraria or payment, speaker's bureaus, stock ownership or options, expert testimony, royalties, donation of medical equipment, or patents planned, pending, or issued.
Associations of Fish Oil Supplement Use With Testicular Function in Young Men
Fish oil supplements might help men become dads
Taking fish oil supplements may improve sperm quality in healthy young men, a new analysis suggests. Researchers studied 1, Danish men taking physical examinations for compulsory military service. Their average age was 19, and 98 of them reported taking fish oil supplements during the previous three months. Compared with those who took none, men who took fish oil supplements for at least 60 days during the previous three months had higher sperm count, a greater proportion of normal sperm cells, higher average semen volume and larger average testicular size. They also had significantly lower follicle-stimulating hormone levels and lower luteinizing hormone levels, both indicators of better testicular function. There was also a dose-response effect for fish oil: Those who took supplements on more than 60 days had better testicular function that those who took them less often.
Fish oil supplements tied to improved male fertility
In this instance, the study also looked at the key hormones involved in making sperm which gives it an additional dimension. Moreover, the fact that they looked at healthy men from the general population military recruits makes the study interesting because it rules out many other health confounders that could influence the result and the men would not have been actively looking to improve their sperm unlike many men from a fertility clinic. Therefore, on the face of it, this would suggest that fish oil supplements might be good for fertility. Having said that, the study is large, was carried out by an established group with a very good reputation in this area and attempts to control for many variables, such as alcohol intake and smoking.
January 17, HealthDay —Couples struggling to get pregnant might want to add a little more fish in their diet, a new study says. Young men 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, researchers report. Although 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 Tina Kold Jensen, a professor of environmental medicine at the University of Southern Denmark. For example, 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.