A growing number of men are turning to unproven methods promoted by social media influencers in an effort to boost their sperm counts, a trend that is gaining traction as concerns about male infertility rise.
Influencers like naturopath Lucas are widely disseminating advice online, including claims about a global decline in fertility. Lucas, who has a significant online following, has suggested that men could become infertile within 33 years, a prediction not supported by scientific evidence. He markets online courses, one-on-one coaching, and supplements aimed at improving testosterone and fertility.
One of the more prominent, yet unverified, protocols promoted by Lucas involves applying an ice pack to the testicles for 10-15 minutes, two to three times daily. He has stated that clients have reported successful pregnancies after following this advice, describing it as a "promising intervention" that warrants consideration, although he acknowledges the need for more research. NHS guidance does note that increased scrotal temperature from tight underwear can negatively affect sperm quality, lending a sliver of preliminary support to the general principle of keeping testes cool.
Beyond speculative methods, Lucas also advises on established healthy lifestyle practices such as diet, sleep, and exercise. These recommendations align with expert advice, which prioritizes evidence-based approaches.
Professor Channa Jayasena, an expert in male fertility, stresses the importance of addressing reversible factors. "If there are any reversible things such as [quitting] smoking, such as [losing] weight and increasing physical activity," he stated, "that's by far the best thing you can do."