XY Files Blog

Medically reviewed articles on testosterone, hormones, fitness, and longevity, so you can make informed decisions about your health.

Gary Brecka gene test: What DNA methylation really tells you about your health

Veedma's editorial team: Evidence-based men's health

Nov 27, 2025 · 15 min read

DNA methylation tests estimate biological age and population-level risk patterns, but they cannot diagnose disease or reliably tell you which supplements you need. They measure methyl groups attached to cytosine at thousands of CpG sites and use algorithms (epigenetic clocks) to generate scores. Here’s how to read a Gary Brecka style methylation report without overpaying ...

Huberman sleep stack: What Andrew Huberman sleep cocktail ingredients can actually do

Veedma's editorial team: Evidence-based men's health

Nov 26, 2025 · 15 min read

The Huberman sleep stack may modestly shorten sleep latency and reduce stress related arousal, but it is not a sedative and it does not treat sleep apnea or chronic insomnia. It is usually a three ingredient supplement routine of magnesium, L theanine, and apigenin, with a fourth ingredient, inositol, sometimes added at 900 mg every ...

Glutathione foods: Can you really eat your way to better antioxidant defense?

Veedma's editorial team: Evidence-based men's health

Nov 26, 2025 · 14 min read

Not reliably. Most glutathione in food is broken down during digestion, so diet helps more by providing the amino acids and cofactors your body uses to make glutathione. Here is how glutathione actually works, which foods matter most, and how to build a smarter plan for immunity, energy, and healthy aging. “Glutathione is less like ...

Neutral grip pulldown: How to build your back while protecting your shoulders

Veedma's editorial team: Evidence-based men's health

Nov 26, 2025 · 10 min read

A neutral-grip pulldown can provide a similar lat training stimulus to a wide, palms-forward pulldown for many lifters, while often feeling more comfortable on the shoulders. For decades, the wide-grip pulldown has been the default for chasing a “V-taper.” Here’s how turning your hands to face each other can change elbow path and shoulder angles ...

Medicine 3.0 for men: How to make prevention your default

Veedma's editorial team: Evidence-based men's health

Nov 25, 2025 · 16 min read

To make prevention your default, Medicine 3.0 focuses on earlier risk testing, tracking trends over time, and making targeted lifestyle and medical changes before disease develops. It shifts the goal from being “normal” on paper to being optimal in real life so you can protect performance now and extend healthspan later. “Medicine 3.0 is the ...

Is Dave’s Killer Bread healthy? Nutrition facts, glycemic index, diabetes, weight loss, and ultra processed concerns

Veedma's editorial team: Evidence-based men's health

Nov 25, 2025 · 14 min read

Usually yes, but with caveats: one slice of Dave’s Killer Bread 21 Whole Grains and Seeds has 110 calories, 5 g fiber, 5 g protein, 5 g added sugar, and 170 mg sodium, which makes it stronger on fiber than many supermarket breads but not automatically ideal for weight loss or diabetes. The bigger questions ...

Hydrogen water bottle benefits: Hype, risks, and what the science actually says

Veedma's editorial team: Evidence-based men's health

Nov 24, 2025 · 16 min read

Hydrogen water bottles dissolve extra molecular hydrogen (H₂) into water, and early small human studies suggest modest reductions in oxidative-stress markers and post-exercise fatigue via a “selective antioxidant” effect. These results are not the dramatic recovery, focus, or anti-aging outcomes often marketed. Here’s how these devices generate H₂, what the research and real-world risks show, ...

Does creatine help you lose weight or just add water weight?

Veedma's editorial team: Evidence-based men's health

Nov 24, 2025 · 14 min read

Creatine does not directly burn body fat, and it often causes a small early increase on the scale because it pulls water into muscle cells as muscle creatine stores rise about 10 to 40 percent. That same ATP-recycling boost can help you train harder and retain lean mass during a cut, improving body composition even ...

Can kale really help erections? What the science actually says

Veedma's editorial team: Evidence-based men's health

Nov 24, 2025 · 12 min read

Kale isn’t a proven standalone treatment for erectile dysfunction, but its dietary nitrates and antioxidants can support endothelial nitric oxide signaling. This is the pathway that relaxes penile blood vessels to allow engorgement. Because ED is often related to vascular and metabolic health and becomes more common with age, the bigger win is using a ...

Are Quest bars healthy for fat loss in men? What to know about quest bars and weight gain

Veedma's editorial team: Evidence-based men's health

Nov 24, 2025 · 16 min read

Quest Protein Bars can fit into a fat loss plan, but they can also contribute to weight gain or stalled progress if they push your daily calories above your target. If you have searched phrases like “quest bars and weight gain” or “quest bars stall weight loss,” the real issue is usually portion frequency, calorie ...

Rowing machine muscles worked: What a rower really trains from feet to hands

Veedma's editorial team: Evidence-based men's health

Nov 23, 2025 · 11 min read

A rowing machine works most major muscle groups by combining a powerful leg drive, a hip hinge, and an upper body pull on every stroke. If you want a low impact way to build conditioning while still training your legs, back, and core hard, the rowing machine rower setup is one of the most efficient ...

Turkey deli slices nutrition: How healthy is that easy sandwich, really?

Veedma's editorial team: Evidence-based men's health

Nov 23, 2025 · 11 min read

Turkey deli slices can fit into a healthy, high‑protein diet when they are whole‑muscle and lower sodium, but many deli products are high in sodium and curing agents that can raise cardiovascular risk when eaten often. Some servings reach 1,000 mg of sodium (nearly half the 2,300 mg/day limit), which can increase extracellular fluid volume ...