The field guide to animal protein

The proof behind
every scoop.

Paleo Pro started with a question: what did people eat for protein before there was a supplement aisle? Beef and eggs. The research kept pointing the same direction. This page is the evidence that led us here — in plain language, every source named. If we can't cite it, we don't say it.

26g
Complete protein
9/9
Essential aminos
1.1+
DIAAS score
5
Ingredients
Two proteins, one reason

Why beef and egg, together

Each is a complete protein on its own. Side by side, their amino profiles cover each other's gaps — which is why one scoop does what most powders need a blend of ten to do.

Grass-fed beef

Protein and connective-tissue quality — the amino acids that rebuild muscle, tendon, and joint. Naturally rich in glycine, proline, and iron cofactors.

  • Rebuilds muscle and connective tissue
  • Zero lactose, zero dairy
  • Isolated to 90%+ protein
+

Egg white

The reference protein nutrition science has measured others against for decades. Highest DIAAS of any common food, and dense in leucine — the amino acid that switches on muscle repair.

  • DIAAS 1.13 — top of the table
  • Leucine-dense — the muscle switch
  • Fat-free, carb-free
Protein quality, scored

Not all protein counts the same

DIAAS is the score nutrition scientists use to grade protein quality — how complete it is, and how much your body actually absorbs. A score near or above 1.0 means a complete, highly usable protein.

Egg white
1.13
Beef
1.10
Whey
1.09
Soy
0.90
Pea
0.82
Wheat
0.45

Egg white and beef — the two proteins in our scoop — sit at the top of the table. Sources 1 & 2 below.

What a scoop does

From shaker to muscle

The short version of a long biochemistry lecture.

0 min

You drink it

26g of complete protein, about 120 calories, nothing your gut has to argue with.

30 min

Aminos rise

Beef and egg proteins digest cleanly. Blood amino acids climb and repair begins.

1–2 hr

The switch flips

Leucine crosses the 2–3g threshold and muscle protein synthesis turns on.

24 hr

You keep it

Repeated daily, protein you absorb becomes muscle you keep — through training and through life.

Complete, by nature

The nine your body can't make

Nine essential amino acids must come from food. Beef and egg white deliver all nine in ratios your body recognizes — no blending, no fortifying, no math.

LeucineThe trigger for muscle protein synthesis
IsoleucineEnergy and muscle recovery
ValineTissue repair and endurance
LysineCollagen and calcium absorption
MethionineMetabolism and detox pathways
PhenylalanineBuilding block for neurotransmitters
ThreonineGut lining and connective tissue
TryptophanSerotonin and sleep
HistidineBlood cells and nerve protection
One scoop from the bag
One scoop
A real-food breakfast
Real food first
Training at home with dumbbells
Muscle you keep
Why people quit whey

The whey problem

Whey is a fine protein on paper. The trouble is what comes with it — and what most bags add to hide it.

65%

of adults can't digest it

The bloat isn't in your head. Most adults stop making enough lactase — the enzyme that breaks down lactose — after childhood. Whey concentrate carries lactose, and lactose your gut can't break down ferments instead. Source 6 below.

10–15+

ingredients per bag

Gums, thickeners, sucralose, "natural and artificial flavors" — the average whey label reads like a chemistry set.

Cheese

is where whey comes from

Whey is the liquid left behind when milk is turned into cheese — filtered, dried, flavored, and sold back as a premium protein. It was never the food. It's what was left over after the food.

Beef and egg white deliver the amino profile whey is known for — with zero dairy, zero lactose, and a label you can read in one breath.

Supplement aisle beside a spread of real food — beef, eggs, and butter
The shortcut is food

One of these actually works.

Walk any supplement aisle and count the promises. Real food doesn't make promises — it just delivers. We put two of the oldest proteins on earth in a bag and left everything else on the shelf.

Call us the anti-supplement supplement company. Everything we make is rooted in how humans have always eaten, checked against the research, and proven in Doug's own kitchen — and 100,000+ others. If it wasn't food before there was a supplement aisle, it isn't in our bag.

Shop clean protein →

Built on purpose

Four choices. Four reasons.

Every decision in the scoop has a why — tap a card to read it.

01 · Trigger

The leucine threshold

Muscle protein synthesis, the process your body uses to build and repair muscle, is switched on by the amino acid leucine. Research puts the trigger at roughly 2–3g per serving. A full 26g scoop of complete animal protein clears that bar. A small serving of incomplete protein never flips the switch.

Sources 3 & 4 below
02 · Keep

Muscle you keep

Muscle you don't feed is muscle you lose, and protein intake is one of the few levers proven to help you keep it, alongside staying active. Higher daily protein supports lean mass, strength, and recovery through every season of training and life.

Source 5 below
03 · Digest

Easy on the gut, on purpose

No whey means no lactose. No soy, no gluten, no gums, no sugar alcohols — the usual suspects behind protein-shake bloat simply are not in the bag. Beef and egg proteins digest cleanly, which is why people who quit whey tend to stay here.

The clean-label rule
04 · Sweeten

Sweetness from a fruit

Monk fruit has been used as a sweetener for centuries and carries zero sugar and zero calories into the scoop. No artificial sweeteners, no cane sugar, no blood-sugar rollercoaster. Prefer none at all? Plain Naked skips it entirely.

Zero sugar · zero calories
Doug running on the beach at sunrise
Built by someone who needed it

The science was personal first

Doug didn't start with a lab. He started with a body that had to be rebuilt from a hospital bed, and a rule: only real food. Everything on this page is the evidence he went looking for when he couldn't find a protein that fit.

The formula hasn't changed in over a decade. The citations just keep piling up behind it.

Doug's Story
Straight talk

Myths, corrected

Myth
"Beef protein is just ground-up gristle."
Fact

Beef protein isolate is hydrolyzed from grass-fed beef and refined to 90%+ protein. It's a clean, neutral powder — not jerky in a bag.

Myth
"Plant protein is easier to digest."
Fact

Plant proteins carry fiber, lectins, and anti-nutrients that many guts struggle with. Animal proteins score higher on digestibility in every DIAAS study.

Myth
"You need whey for fast absorption."
Fact

Egg white and beef isolate digest quickly too — fast enough to clear the leucine threshold within the post-workout window.

Myth
"More ingredients means more complete."
Fact

Completeness comes from the source, not the count. Two animal proteins cover all nine essentials. Twenty plant ingredients are still guessing.

Show your work

Sources

  • FAO. Dietary Protein Quality Evaluation in Human Nutrition. FAO Food and Nutrition Paper 92, 2013.
  • Burd, N. et al. Food-First Approach to Enhance the Regulation of Post-exercise Skeletal Muscle Protein Synthesis. Sports Medicine, 2019.
  • Phillips, S. & Van Loon, L. Dietary protein for athletes: from requirements to optimum adaptation. Journal of Sports Sciences.
  • Phillips, S. The impact of protein quality on the promotion of resistance exercise-induced changes in muscle mass. Nutrition & Metabolism, 2016.
  • Morton, R. et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength. British Journal of Sports Medicine, 2018.
  • Storhaug, C. et al. Country, regional, and global estimates of lactose malabsorption in adults. The Lancet Gastroenterology & Hepatology, 2017.