SUPPLEMENTS

Everything FitChef knows about supplements.

Eight supplements. Hundreds of trials. The ones that work, and the ones that don't.

The synthesis

This is where it all comes together. One guide. Built from 9 verified claims. Backed by 8 analyzed studies.

The Definitive Guide

The Supplement Sort: What Eight Research Teams Found When They Tested Everything on the Shelf

Creatine to collagen, fat burners to fish oil — eight categories tested against the same evidence standard so you can compare them side by side.

Creatine is just water weight
Fat burners boost your metabolism
BCAAs are essential for muscle growth
You need protein powder for muscle
Testosterone boosters build muscle
8 studies 9 claims Triple-verified
built from

What the evidence says

We don't make claims. The studies do. We review them. 9 verified claims on supplements — each one traced back to the papers below.

backed by

The papers we actually read

Every claim above traces back to a peer-reviewed paper. No shortcuts. No cherry-picking. 8 studies analyzed on supplements.

Fish Oil and Muscle: What 6 Studies Actually Found
Collagen for Training: What 19 Studies Actually Found
Researchers Checked 50 Testosterone Boosters for Evidence
Fat Burners vs Diet & Exercise: 21 Studies, One Answer
Do BCAAs Build Muscle? 22 Studies. One Winner.
Caffeine Makes You Stronger. Here’s How Much.
Researchers Ranked Every Protein Supplement. Only 2 Worked.
100+ Creatine Trials Exposed: Real Muscle or Water?

Quick reads

Bite-sized, evidence-backed answers on supplements. Each one grounded in the studies above.

Nutrition

Garlic gets minced. Onion gets diced. Both go into the pan before the lentils, the rice, the beans. Not because a nutrition plan called for them. Because the dish tastes flat without them.

The Iron Rescue Hidden in Every Clove of Garlic
2 min read 562 words
Supplements

Protein powder has its own shelf in every supplement store, its own section in every gym bag, its own ritual in every post-workout routine. The industry built an entire product category around one premise: what you eat at the table cannot do what a powder in a shaker bottle can.

The Protein Target Your Kitchen Already Hits
2 min read 466 words
Nutrition

Raw garlic crushed on a cutting board releases a compound so sharp it stings the fingers and fills a kitchen in seconds. The smell is aggressive, almost medicinal. Under heat, that edge collapses. The sharpness folds into something sweet and roasted within a minute. By the time garlic reaches a plate, every trace of the raw bite has disappeared.

Garlic Has Two Chemical Systems. Cooking Destroys One.
2 min read 527 words
Supplements

Every omega-3 dosing recommendation for muscle recovery lands somewhere between two and three grams of EPA and DHA per day. The conversation narrows from there: the ratio, the timing, whether to split capsules across meals.

The Omega-3 Recovery Dose That Vanished
2 min read 432 words
Supplements

Podcasts mention it between ad reads. Supplement labels hint at it. The idea that gut health shapes your workouts has settled into the kind of belief that survives without evidence — repeated enough that nobody stops to ask what it actually means. Ask what the connection is — not whether gut health matters for performance, but how — and the answer is nothing specific. You believe it. You cannot explain it.

Your Gut Already Knows How Hard You Train
3 min read 617 words
Supplements

Green tea extract is marketed as a metabolism booster on more supplement shelves than almost any other single ingredient. The catechins. The EGCG. The promise of a faster resting metabolic rate from something natural, gentle, practically medicinal.

The Part of Green Tea That Burns Fat Was Already in Your Coffee
2 min read 371 words
Nutrition

Oxalates bind to iron in the gut. Spinach is loaded with oxalates. The conclusion writes itself: spinach iron is locked away, absorbed so poorly it barely counts. When this was measured directly — the exact amount of oxalic acid found in a serving of spinach, added to a controlled meal, iron absorption tracked with stable isotopes — the effect was zero.

Every Source Blamed the Wrong Molecule for Spinach Iron
2 min read 386 words
Supplements

Collagen improves what’s beneath the surface — the turgor, the tone, the moisture — rather than resolving the texture on top.

Collagen Improved Skin, Joints, and Lean Mass. Wrinkles Didn’t Move.
2 min read 480 words
Supplements

Drinking pickle brine to stop a muscle cramp sounds like locker-room folklore, until a controlled trial measured it and cramp duration dropped by nearly half, resolved in 85 seconds. The electrolyte theory everyone reaches for has a problem: that amount of liquid takes roughly 30 minutes to leave the stomach. The pickle juice hadn't reached the stomach when the cramp was already gone.

Pickle Juice Stops Cramps Before It Reaches Your Stomach
2 min read 390 words
Supplements

The evidence, by the analysis’s own conclusion, was too thin for physicians to make informed recommendations.

The Entire Case for Magnesium and Sleep Rests on 151 People
2 min read 434 words
Nutrition

You know what frozen berries look like when they thaw. The bag sweating on the counter, juice bleeding purple through the plastic. The berries soft, collapsed — nothing like the firm glossy ones sitting in the clear clamshell at the store. One glance and your brain has its answer: you settled. The fresh ones looked alive. These look like they’ve been through something. So what happens when someone stops looking at berries and starts measuring them — taking fresh and frozen from the exact same harvest and putting both through a chemistry lab?

Your Frozen Berries Beat the Fresh Ones
2 min read 498 words
Nutrition

Most people steam or boil their broccoli somewhere between eight and twelve minutes. Tender, green, done. During those minutes, an enzyme inside the broccoli — the one responsible for producing the compound most of the health research is actually about — quietly breaks apart and disappears.

The Broccoli Enzyme That Dies After Eight Minutes of Cooking
2 min read 383 words
Supplements

You know the feeling — the pre-workout kicks in, the fog lifts, and somewhere between your warm-up and your working weight, everything feels sharper. Dialed in. Switched on.

Caffeine Works in the Gym — By Less Than You Feel
2 min read 521 words
Supplements

2,000%. The number follows turmeric everywhere — supplement labels, cooking blogs, golden latte recipes, all repeating the same line: add black pepper or the turmeric is wasted.

Turmeric’s 2,000% Number Came From Eight Men and a Capsule
2 min read 433 words
Nutrition

The raw material sits in every frozen bag with no converter to activate it.

Frozen Broccoli Holds Every Nutrient Except the One That Made It Famous
2 min read 370 words
Supplements

The audience spending the most on supplements was getting the least from them.

The Muscle Your Supplements Actually Built
2 min read 504 words
Supplements

What separates a meaningful gain from a statistical ghost is whether you gave the supplement something to work with.

Creatine Made the Scale Move. It Wasn’t Muscle.
2 min read 411 words
Supplements

Creatine is a daily supplement that got packaged into a pre-workout tub because the tub needed another name on the label.

Your Pre-Workout Has 15 Ingredients. One Survived the Evidence.
2 min read 564 words
Supplements

The workout was helping your recovery. The pre-workout was taking it apart.

Caffeine Helps Your Workout. Your Sleep Pays a Bigger Price.
2 min read 485 words
Supplements

For most adults, the scoop is delivering a fraction of what the tub promises.

Creatine Builds What Pre-Workout Borrows
2 min read 488 words
Supplements

The headline ingredient on the label is strength. The headline finding in the evidence is recovery.

Ashwagandha Builds Strength. Just Not the Way the Label Says.
2 min read 478 words
Supplements

Your daily multivitamin was never insurance. It was the feeling of doing something responsible without checking whether the something worked.

Your Daily Multivitamin Had 27 Years to Prove Itself
2 min read 398 words
Supplements

Caffeine still works after daily use. It just works less.

Caffeine Tolerance Costs You Three-Quarters of the Boost
2 min read 502 words
Supplements

Within twelve weeks, creatine can restore your muscles’ energy reserves to 85 to 90% of what they carried decades ago.

Creatine After 50: The First 32 Weeks Matter Most
3 min read 573 words
Supplements

Your diet carries a 31 to 67% surplus of every essential amino acid. That surplus absorbs collagen's gaps comfortably.

Collagen Scores Zero as Protein. Your Body Disagrees.
2 min read 524 words
Supplements

Whey wins the three-hour race. The trouble is, muscle isn't a three-hour race.

Whey vs Casein for Muscle: Fast vs Slow Isn’t the Question
3 min read 639 words
Supplements

The internet compressed 'DHT went up in 20 athletes' into 'creatine makes your hair fall out,' and the claim never stopped traveling.

Creatine and Hair Loss: The Study That Finally Measured Hair
2 min read 465 words
Supplements

The premium price buys better solubility in your shaker cup, not better results in your body.

Creatine Monohydrate vs HCL: One Has 89 Trials
2 min read 617 words
Supplements

The mirror runs on a longer schedule than the muscle.

Creatine Runs on Three Clocks. You’ve Been Watching One.
2 min read 488 words
Supplements

A hundred and forty-three trials tested creatine. Every one supplemented daily — rest days included. No study has ever tested skipping.

Every Creatine Study Included Rest Days
2 min read 378 words
Supplements

Women build muscle at the same percentage rate as men — the gap on the scale exists because the starting line is different, not because creatine works differently.

143 Trials Settled Whether Creatine Works for Women
2 min read 508 words
Supplements

The cup of coffee that wakes you up is the same cup quietly blunting your pre-workout.

How Much Caffeine Before a Workout? It Scales to You, Not the Scoop
3 min read 515 words
Supplements

Loading is not the engine. The daily dose is the engine.

Creatine Loading: 143 Studies, Zero Difference
2 min read 432 words
Supplements

The first-week spike is real and temporary. The muscle growth underneath it is real and cumulative.

Creatine’s 1-3 kg Water Weight Isn’t Under Your Skin
2 min read 605 words
Supplements

10.1% of the products contained ingredients that may actually lower testosterone.

Testosterone Boosters That Lower Your Testosterone
2 min read 403 words

8 studies → 9 verified claims → 1 flagship guides → 35 quick reads. Every link traceable. Every source cited.