Nutrition & Supplements

Electrolytes are everywhere — but do you need a powder? Who actually benefits, the potassium gap nobody mentions, and the overhydration risk to know.

How much protein per day do you really need? Evidence-based targets by goal and age, the per-meal sweet spot, the kidney myth, and how to actually hit it.

Glycine for sleep: how this amino acid cools your body to help you fall asleep, what the studies show, the 3-gram dose, and how it compares to magnesium.

Do collagen supplements work? An honest look at collagen for skin and joints — the real findings, the funding caveat, dose, and what actually beats it.

L-theanine benefits for calm, focus, and sleep — what the evidence really shows, the caffeine combo that works, the right dose, and who should skip it.

Creatine isn't just for male gym-bros. Here's what the research shows about creatine for women — muscle, bone density, mood, dosing, and the myths.

Ashwagandha is the most-hyped adaptogen for stress and sleep. Here is what the clinical evidence actually shows — plus dosage, forms, and safety caveats.

The best krill oil supplements compared on EPA/DHA per gram, astaxanthin content, MSC sourcing, and price. Brand-by-brand picks plus what to skip in 2026.

Krill oil is phospholipid-bound and includes astaxanthin; algae oil is vegan and contamination-free. A research-based comparison of EPA/DHA, absorption, sustainability, and cost.

An estimated 40% of Americans have vitamin D levels below 20 ng/mL, the threshold many clinicians consider insufficient. This comprehensive guide covers who's at risk, optimal blood levels, proper D3 dosing, essential cofactors, and what the research actually shows.

Magnesium glycinate, threonate, citrate, taurate, oxide, and malate all behave differently. This guide explains which forms make sense for sleep, stress, muscle recovery, and general health.

Not all omega-3 supplements deliver the same EPA, DHA, freshness, or value. This guide compares the best fish oil, krill oil, and algae options for 2026.