Reproductive biology and endocrinology : RB&E2018
Narrative ReviewHuman
This review pulled together what is known about how everyday life affects a man's fertility, covering age, psychological stress, nutrition, physical activity, caffeine, scrotal temperature, hot water and mobile phone…
Human reproduction (Oxford, England)2018n = 656
Cross SectionalHuman
This study looked at whether the type of underwear men wear affects markers of testicular function, such as sperm count and hormone levels. Researchers surveyed 656 men seeking fertility treatment…
Advances in nutrition (Bethesda, Md.)2018n = 28 articles for qualitative analysis, 15 for quantitative meta-analysis
Meta AnalysisHuman
Infertility affects about 15 percent of the world's population, which is what makes this question worth asking. This systematic review and meta-analysis pooled randomized trials testing whether nutrients, dietary supplements…