Briefs or boxers? That is the question.
Science tries to answer !
Unfortunately, to date, there are still very few studies that correlate "genital well-being" and the underwear to wear; and often the scientific evidence does not always agree with each other!
A recent study, which sampled 656 boys (average age 35.5 years), found that approximately half of them (53%; n = 345) reported that they usually wear boxers .
Men who reported primarily wearing boxers had a 25% higher sperm concentration (95% CI = 7, 31%), a 17% higher total count (95% CI = 0, 28%), and 14% lower serum FSH levels than men who reported not primarily wearing boxers.
Despite the limitations of this study, the authors conclude that some types of male underwear may impair spermatogenesis and this may lead to a compensatory increase in gonadotropin secretion, as demonstrated by higher serum FSH levels among men who reported wearing tight underwear more frequently.
In another study that included 491 men dividing them into 6 categories by habits:
1) day/night briefs
2) day/night boxer
3) no slip day no night
4) boxer shorts during the day, nothing at night
5) boxer briefs day/nothing at night
6) boxer briefs day/nothing at night
The authors, analyzing the seminal fluid of these subjects, did not observe significant differences in time to pregnancy, delay in conception or infertility.
In summary, the choice of male underwear was associated with few differences in seminal fluid parameters. This study also has several limitations, and like the previous one, it does not investigate the material from which the underwear used is made (cotton, synthetic, breathable, etc.), a fundamental parameter since it can be the main variable conditioning "scrotal thermoregulation" - one of the many fundamental factors that condition male fertility.
Source: md_urologist
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