Topic

Claims Examined

Every Oakman post tagged claims examined, collected in one place.

Sauna Detox Benefits, Without the Fairy Tales: What Sweat Really Carries Out (and What It Doesn’t)
Claims ExaminedDetox & Elimination
Sweat can carry trace amounts of certain compounds, including heavy metals like lead, cadmium, arsenic, and mercury, and some environmental chemicals like BPA and phthalate metabolites, but your liver, kidneys, and gut do most of the real elimination work and sauna supports rather than replaces them.Most men mean something different when they say “detox.” Sometimes it’s that clean, calm feeling after a hard sweat. Sometimes it’s better sleep. Sometimes it’s a legit worry about the amount of chemical exposure we rack up from food packaging, indoor air, and the daily... Read more...
The Sauna Safety Rules You Can Ignore (and the One That Actually Matters)
Cardiovascular HealthClaims Examined
Most common sauna rules, including the 15-minute limit, the no-solo rule, and aggressive pre-hydration, aren't grounded in solid evidence. The one rule that consistently matters is straightforward: don't mix alcohol and heat, because that combination is the common factor in the vast majority of sauna-related cardiac events.Walk into any public sauna in North America and you'll see the same sign: "Limit session to 15 minutes." Stay with me—that number wasn't written by a scientist. It was written by an insurance adjuster who didn't want to get sued. I've spent months... Read more...
The Fertility Myths That Refuse to Die
Male FertilityClaims Examined
Most fertility myths men repeat don't come from solid science. They come from old assumptions, marketing, and a reluctance to talk openly about something personal, and when you check the actual research, the most persistent ones fall apart or turn out to be far more complicated than the original claim.I was talking to a friend last week. He's 38, runs marathons, eats clean, and he told me he's been wearing boxers for six months because he read that briefs "cook your sperm." He was absolutely sure about it.I didn't have... Read more...
Caffeine and Sperm Quality: Why the Panic Is Overblown
Sperm HealthClaims Examined
The panic around caffeine and sperm quality is largely overblown. Research shows that moderate intake of two to three cups of coffee per day does not meaningfully harm sperm count, shape, or DNA integrity, and the small effects seen at high doses are often tangled up with poor sleep, smoking, and diet rather than caffeine itself.I’ve spent the last few years digging into the research on caffeine and male fertility—not because I’m a doctor or a scientist, but because I got tired of seeing the same oversimplified headline: “Coffee kills... Read more...
Herbal Teas and Male Fertility: What I Found When I Actually Checked the Science
Sperm HealthClaims Examined
Some herbal teas do have real research behind them for male reproductive health, particularly ashwagandha and maca, which showed measurable improvements in sperm count, motility, and semen volume in clinical studies, though the evidence is still limited and no tea should be treated as a medical treatment.I remember the first time I saw the numbers from that Hagai Levine study. Global sperm counts dropped 52 percent between 1973 and 2011. That's not a typo. And the rate of decline is getting faster. Something is wrong with male reproductive health, and... Read more...
Sauna for Allergy Relief: Use Heat as Nasal Conditioning, Not a Miracle Fix
Sauna BenefitsClaims Examined
Sauna isn't a treatment for allergies, but for some men it can support breathing comfort during allergy season by changing the conditions inside the upper airway through heat and humidity, making mucus easier to clear and helping break the cycle of congestion, poor sleep, and heightened symptoms.If seasonal allergies make you feel like you’re breathing through a straw at night, you’re not imagining the knock-on effects. Congestion drives mouth breathing, mouth breathing dries your throat, and the whole thing quietly wrecks sleep. Then you show up to training the next... Read more...
Tight Underwear and Sperm Health: Heat Is the Mechanism, Modern Life Is the Amplifier
Sperm HealthFabrics & Materials
Heat is the core issue: tight clothing can reduce airflow and raise scrotal temperature, and sperm production works best a little cooler than core body temperature. The real risk comes from stacking tight layers on top of an already warm, sedentary day rather than from any single clothing choice on its own.If you are asking whether tight clothing can affect sperm health, you are already ahead of most men. The common internet answer is a boring argument about boxers vs briefs. The more accurate answer is simpler and more useful:... Read more...
The Quiet Revolution in Men’s Fertility: Why Tracking Apps Are Finally For Us, Too
Male FertilityApps & Tracking
Fertility tracking apps designed specifically for men are now a real category, covering everything from lifestyle logging to at-home sperm analysis, though the evidence that tracking itself improves pregnancy rates is still limited and the technology is ahead of the science.Five years ago, if you searched for “fertility tracking app” in the App Store, every result showed a calendar with pink flowers and ovulation predictions designed for women. The assumption was clear: fertility is a woman’s problem. Men just show up.That’s changed. If you’re a guy in his thirties trying... Read more...
What I Learned About Sperm Volume After Actually Reading the Studies
Sperm HealthClaims Examined
The studies show that hydration is the single biggest lever for sperm volume, followed by ejaculation frequency, dietary zinc, and a calm nervous system. Supplements ranked last in the evidence, and no single pill comes close to what consistent water intake and a two-to-four day abstinence window can do.For years, I assumed increasing sperm volume meant buying the right bottle of pills. Zinc, lecithin, some herbal blend with a name that sounds like a Viking war cry. That's what the internet told me, anyway.But after spending a few weeks digging... Read more...
Is Your Phone in Your Front Pocket? What I Learned About Sperm and Radiation
Sperm HealthClaims Examined
Research suggests it might be worth reconsidering. Studies have linked higher mobile phone use to lower sperm concentration and reduced motility, and a 2023 lab study found that exposure to a standard smartphone raised oxidative stress in sperm samples within an hour.I used to carry my phone in my front pocket. Every single day. Wallet in one pocket, keys and phone in the other. Then, while researching modern factors affecting men's health, I kept bumping into studies that made me stop. I spent the last few months deep in the... Read more...