Peak male fertility typically occurs between the early 20s and mid-30s, when sperm parameters (count, motility, morphology) and testosterone levels are generally at their highest, and sperm DNA fragmentation is lowest.
Fertility potential remains good into the late 30s and early 40s for most men, but from around age 40–45 onwards, studies show a gradual average decline in sperm quality, motility, and DNA integrity, as well as slightly higher risks of time to conception and certain pregnancy outcomes.
The good news is that many of these age-related changes can be partially mitigated with lifestyle optimisation and targeted nutrition. Men over 35 or 40 who are trying to conceive often benefit from +fertimen (zinc, selenium, CoQ10, folate, antioxidants) to help protect sperm health, combined with +maca for endocrine support, energy and stress resilience. Starting 3 months before actively trying gives sperm the best chance to benefit from the full regeneration cycle.