Topic

Nutrition

Every Oakman post tagged nutrition, collected in one place.

Your Guide to Male Preconception Supplements—Everything I Learned From the Research
Male FertilitySperm Health
Research points to zinc, selenium, folate, vitamin B12, coenzyme Q10, and vitamin D as the nutrients that show up most consistently for male preconception health, because they support sperm production, motility, and the epigenetic programming that can influence a child's development.If you’re trying to start a family, you’ve probably heard about folic acid for her. Maybe your partner has a bottle of prenatal vitamins on the counter. But what about you? For a long time, the assumption was that a man’s diet before conception didn’t matter much. That’s wrong. It... Read more...
What the Science Actually Says About a Vegan Diet and Male Fertility
Male FertilitySperm Health
A vegan diet doesn't automatically help or hurt male fertility. What matters most is diet quality: men who eat plenty of whole fruits and vegetables, supplement B12 since plant diets are low in it, and avoid ultra-processed foods tend to show better sperm health, regardless of whether they eat meat.You’ve seen the headlines. “Vegan diets wreck sperm count.” Then the opposite take: “Going vegan boosts fertility with antioxidants.” I’ve read both sets of studies. And after digging into the research, the answer is more interesting than either side wants to... Read more...
The Contrarian Guide to Eating for Sperm Count: Why the Common Advice Is Missing the Real Problem
Sperm HealthInflammation
The common advice focuses on individual 'superfoods' but misses the bigger problem: the modern Western diet creates a metabolic environment hostile to sperm production through oxidative stress, chronic inflammation, and gut microbiome disruption, all at once. A varied, whole-food diet that tackles those root causes is far more effective than chasing any single nutrient.You've seen the lists. Oysters, walnuts, dark chocolate, pumpkin seeds. The internet loves a tidy roundup of "fertility superfoods" that promise to boost sperm count if you just eat enough of them.Here is what most of those... Read more...
Male Fertility on a Vegan Diet: The Make-or-Break Details Nobody Plans For
Male FertilitySperm Health
A vegan diet can support sperm health or quietly work against it, and the difference usually comes down to three things: getting the right micronutrients, managing heat exposure, and keeping ultra-processed convenience foods from crowding out real nutrition.If you Google vegan diet and male fertility, you get two extremes. One side says plants fix everything. The other says tofu is basically birth control. Neither helps much if you're a real guy with a real diet, a job, and a timeline.Here's the practical truth: a vegan diet can support sperm health,... Read more...
Vegan Diet and Male Fertility: The Real Stress Test Is Your Gut (Not Your Protein)
Male FertilitySperm Health
A vegan diet can support male fertility when it's built around whole foods and covers key nutrients like B12, iodine, zinc, selenium, and omega-3 fats, but a sloppy or ultra-processed version can quietly work against sperm quality by worsening metabolic health and creating micronutrient gaps.If you Google “vegan diet male fertility,” you get the same three arguments on repeat: protein, soy, testosterone. Meanwhile, the stuff that tends to decide real-life outcomes—nutrient status, inflammation, and whether you’re under-fueling your training—gets treated like a footnote.A well-built vegan diet can absolutely support male... Read more...
The Zinc Paradox: Why More Isn’t Better for Male Fertility
Sperm HealthTestosterone
More zinc isn't better for male fertility because the relationship follows a U-shaped curve: too little hurts sperm health, but too much also causes harm, partly by depleting copper, which is essential for red blood cell formation, nerve function, and immune health. The goal is hitting the right range, not maximizing intake.You can buy zinc supplements at any drugstore. They sit on the shelf between magnesium and vitamin D, promising better immune function, healthier skin, and yes—better fertility. The research backs zinc as important for sperm production. But what the... Read more...
Folate and Sperm Development: Treat It Like DNA Quality Control, Not a “Fertility Vitamin”
Sperm HealthNutrition
Folate supports the DNA synthesis, repair, and methylation that your body relies on during sperm development, so it's better understood as part of your DNA quality control system than as a fertility vitamin you only think about when you're actively trying to conceive.If you only think about sperm health once you are actively trying for a baby, you are reacting late to the biology. Sperm are built on a timeline. The cells that become sperm go through weeks of rapid division, DNA copying, and DNA packaging before they ever have... 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...
Your Sperm Is Built Over 70 Days—Eat Like the Timeline Is Real
Sperm HealthNutrition
Sperm take roughly 70 to 90 days to develop, so what you eat today shapes the sperm you'll have in about 10 to 12 weeks. That means consistent dietary habits over a full cycle matter far more than any single superfood or short-term clean-eating push.If you care about sperm quality, stop thinking in days. Start thinking in 10 to 12 weeks.Sperm are produced through a staged process (spermatogenesis) that takes roughly 70 to 90 days. That makes diet a slow lever. What you eat today is mostly influencing the sperm... 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...