The Science Hub

How Essential Amino Acids Work

Your body can't make 9 amino acids. If even one is missing, protein synthesis stalls. Here's what that means and why it matters.

EAAs vs. BCAAs — Why We Moved Past the Branch-Chain Era

BCAAs are 3 of the 9 essential amino acids. The research is clear: the other 6 aren't optional. Here's what the studies actuall...

EAA Dosing Guide — How Much, When, and Why It Matters

OptimalAmino vs. PerfectAmino - An Honest Comparison

Two EAA supplements. Similar amino acid profiles. Very different claims. We compare the labels, the science, and the marketing.

Why OptimalAmino Has 8 Essential Amino Acids Instead of 9

 OptimalAmino's MAP formula uses 8 EAAs, not 9. Histidine is excluded because your body maintains weeks' worth of reserves in h...

Why Your Protein RDA Is Probably Too Low

The RDA for protein was set using outdated methods. Modern research consistently shows optimal intake is 2-3x higher for active...

Sarcopenia — The Muscle Loss Condition Nobody Talks About Until It's Too Late

You lose 3-8% of your muscle mass per decade after 30. By the time most people notice, they've already lost years of function.

Anabolic Resistance and Aging — What the Latest Research Actually Shows

Of 46 studies on anabolic resistance, only 3 measured how active the participants were. The blunting is real, modest, and it mo...

What Happens to Your Muscles During a Caloric Deficit

Caloric deficit doesn't just burn fat — it breaks down muscle. Higher protein and EAA supplementation can shift the ratio drama...

What Happens Inside Your Muscles During and After Exercise

 Exercise damages muscle fibers, triggers inflammation, and activates satellite cells. Every phase of repair depends on amino a...

The Muscle Full Effect — Why More Protein Per Meal Isn't Always Better

Muscle protein synthesis maxes out ~3 hours after eating regardless of how much protein you consumed. What you do next matters.

Leucine Alone Isn't Enough — The Single-Amino-Acid Trap

Leucine triggers the muscle-building signal but can't complete the job alone. Without all 8 EAAs, the signal fires into an empt...

GLP-1 Medications and Muscle Loss — What Ozempic Users Need to Know About Protein

Up to 40% of the weight lost on GLP-1 medications like Ozempic may be muscle. Higher protein and EAAs can shift that ratio sign...

Surgery, Injury, and Immobilization — Protecting Muscle When You Can't Train

Bed rest and immobilization can cost 150g of muscle per day. EAA supplementation is one of the few tools that works without mov...

The DIAAS Scoring System — Not All Protein Is Created Equal

DIAAS replaced the outdated PDCAAS as the gold standard for protein quality. The difference matters for how you plan your prote...

Plant Protein vs. Animal Protein — What the Research Actually Shows

Plant and animal proteins differ in amino acid profiles, digestibility, and anabolic effect. EAA supplementation levels the pla...

Collagen Protein's Dirty Secret — What the Amino Acid Profile Reveals

Collagen is the best-selling protein supplement in the US. It's also missing or low in several essential amino acids your muscl...

The Gut-Muscle Axis — How Digestion Shapes Your Protein Response

Digestive efficiency determines how much of the protein you eat actually reaches your muscles. Free-form EAAs bypass the bottle...

Protein Absorption Rate — Does It Actually Matter?

Your body can absorb more than 30g of protein per meal. But absorption rate and muscle protein synthesis rate aren't the same t...

The Nitrogen Balance Myth — Why We Got Protein Requirements Wrong

The nitrogen balance method that set protein RDAs systematically underestimates needs. Newer methods suggest we need significan...

Women and Protein — Why the Research Gap Matters

Most protein studies were conducted on men. Women have distinct hormonal, metabolic, and lifecycle demands that change protein ...

Kidney Health and High Protein — Separating Myth from Evidence

The belief that high protein damages healthy kidneys persists despite decades of evidence to the contrary. Here's what the stud...

Beyond Muscle — The Non-Obvious Roles of Essential Amino Acids

EAAs build neurotransmitters, power immune cells, maintain gut lining, and support connective tissue. Muscle is just the beginn...

The Real Science of Recovery — What Works, What Doesn't, and Why

Ice baths, compression boots, and supplements all promise faster recovery. Here's what the peer-reviewed research actually supp...

Fasted Training — Does It Help or Hurt?

Training fasted may increase fat oxidation, but it also accelerates muscle protein breakdown. A small EAA dose may offer a midd...

Intermittent Fasting and Muscle — Why Your Fasting Window May Need EAAs

16:8 fasting limits you to 2-3 protein feedings per day. Research shows that may not be enough to maximize muscle protein synth...

Autophagy, Fasting, and Amino Acids — What the Research Actually Shows

Does taking amino acids during a fast cancel autophagy? The real answer is more nuanced than social media suggests.

Weight Cutting and Muscle — How Athletes Can Protect Lean Mass When Calories Crash

Combat athletes lose up to 5-10% body weight before competition. The research shows a clear hierarchy for preserving muscle dur...

EAAs and Sleep — The Tryptophan Connection Most Brands Ignore

BCAAs compete with tryptophan for brain uptake. A complete EAA supplement preserves the ratio your brain needs for serotonin an...

Amino Acid Spiking — The Supplement Industry's Protein Fraud Problem

 Some protein powders inflate their protein numbers with cheap amino acids that don't build muscle. Here's how to spot it on a ...

How to Evaluate Health Claims — A Skeptic's Toolkit

Most supplement claims don't survive scrutiny. Here's a practical framework for separating evidence-based products from marketi...

What "Clinically Dosed" Actually Means — And How to Check

"Clinically dosed" is one of the most common label claims in supplements. Most products using it don't match the doses from the...

Amino Acid Shelf Life: What Happens After the Expiration Date

We had OptimalAmino tested by an independent lab under harsh conditions that model years of aging. Sealed and stored well, it h...

Nucleotide Supplements — Conditionally Interesting, Largely Unnecessary

Nucleotide supplements are marketed aggressively but the clinical evidence for healthy adults is thin. We reviewed the research.

The Supplement Industry's Evidence Problem

Less than a third of supplement claims are supported by peer-reviewed evidence. Here's why the industry stays that way and how ...