全球出生率持续下滑引发了公众对男性生育力的广泛焦虑。数据显示，自 1950 年每位女性平均生育 4.9 个婴儿以来，这一数字已降至 2025 年的 2.2 个，目前已有 106 个国家的人口更替水平低于 2.1[1]。面对这种趋势，社交媒体上涌现出许多声称能提升精子数量和质量的极端方法，但专家警告这些做法大多缺乏科学依据且存在健康风险。
尽管全球生育率下降的事实确凿，关于男性如何改善精力的建议却充斥着未经证实的“神话”。网红自然疗法师 Lucas 建议在桑拿后每天将冰袋敷在睾丸上 2 至 3 次，每次持续 10 到 15 分钟[1]。另一位案例是 Simon，他声称自己在桑拿过程中使用冰袋敷睾丸以保存精子数量，但这同样缺乏医学证据支持 [1]。前硅谷亿万富翁 Bryan Johnson 则宣称其精子数量达到平均水平的四倍，并大力推广包括上述桑拿和冰敷在内的特定协议 [1]。此外，美国卫生部长 Robert F Kennedy Jr. 声称 1970 年男性的精子数量是当今青少年的两倍[1]。
专家强调，盲目使用未经证实的“补剂堆栈”和激素疗法可能带来严重健康风险。特别是指导不当下使用 HCG（人绒毛膜促性腺激素）和 HMG（人绝经期促性腺激素）等药物，可能导致血栓形成及乳房发育等危险副作用 [1]。针对男性试图通过极端手段提升生育能力的现象，权威建议是通过戒烟、减重等健康的生活方式调整来改善生育能力，而非依赖缺乏科学支撑的网红偏方或激进医疗干预[1]。
Amidst growing global anxiety over declining fertility rates, social media influencers are promoting unproven methods such as scrotal icing and blood donation to improve male sperm count and quality [1]. While birth rates have dropped globally from 4.9 infants per woman in 1950 to 2.2 in 2025, with populations below the replacement level of 2.1 now recorded in 106 countries [1], experts warn that blindly following these trends poses serious health risks [1].
Specific protocols lack medical evidence; for instance, naturopath Lucas advises men to apply ice packs to their testicles two or three times daily for 10 to 15 minutes each session [1]. Similarly, former Silicon Valley billionaire Bryan Johnson claims his sperm count is four times the average and promotes sauna and icing regimens without scientific backing [1]. Even individuals like Simon, who use ice bags during saunas to preserve sperm numbers, are engaging in practices unsupported by medicine [1].
Health officials have also weighed into the debate regarding historical trends. Robert F Kennedy Jr., the US Health Minister, stated that male sperm counts were twice as high among teenagers today compared to 1970 levels [1]. However, experts caution against using unguided hormone therapies and "stacking" supplements without professional advice [1]. They specifically warn that self-administered drugs like HCG and HMG can lead to dangerous side effects including blood clots and breast development [1]. Instead of relying on extreme measures or hormonal interventions, specialists recommend improving fertility through lifestyle adjustments such as quitting smoking and losing weight [1].