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Casein

It curdles into a clot that keeps feeding you long after whey has run out.

Also called Micellar Casein, Caseinate, Calcium Caseinate, Sodium Caseinate, Casein Protein

Sold as a dietary supplement

Who it's forAny man who lifts and sleeps a full night on an empty stomach.

The item

Three squares: proven in human trials. Two: a strong signal. One: early human data. Striped: the trials disagree.

Why it works

Stomach acid makes casein micelles clot into a soft gel that empties slowly. It releases amino acids over hours rather than in a spike. That is the whole reason casein is called slow and whey fast. It is a complete protein. So it supplies both the leucine signal that switches on muscle protein synthesis and the material to build with. That makes overnight its natural use.

Where it fits

Casein is a move in 5 protocols. Each one opens the plan it sits in.

What people say

Here is what doctors, influencers and men online say about Casein, word for word.

Experts

Clinicians, authorities

  • “LTP may be effective in BP reduction, especially in Japanese individuals; however sub-group, meta-regression analyses and statistically significant publication biases suggest inconsistencies.”

    Nutrients (meta-analysis of randomised trials) · 33
  • “A summary of the main findings shows limited to no effects on metabolism or appetite when ingesting 24-48 g of casein 30 min before sleep, but data are limited”

    Nutrients (systematic review, 11 studies)
  • “Therefore, casein protein provides your body with a slow, steady release of amino acids, making it ideal before fasting situations, such as sleep.”

    Healthline (registered dietitian author, dietitian-reviewed)

Gurus

Podcasts, channels, influencers

  • “Personally, I prefer whey. I find casein protein less palatable, and it doesn’t mix as well.”

    fitness blog for beginners
  • “In fact, slow digestion may be an asset during other times of the day. However, after exercise, slow proteins might not be best.”

    nutrition coaching research review
  • “Casein is one of the most extreme examples of such “slow proteins,” but generally speaking, solid protein sources will be absorbed more slowly than protein powders and shakes”

    longevity podcast host site

Regular people

Forums, reviews, comments

  • “Casein has me farting all night. I bought it because I was told it would make thicker shakes.”

    T-Nation forum thread, reply 1 like
  • “I really feel casein before bedtime improves my sleep drastically! (I have a bucket of micellar casein powder)”

    Hacker News comment
  • “That would be an allergic reaction, and highly unlikely. My son had a milk protein allergy as an infant and the solution was a casein based baby formula.”

    T-Nation forum thread, reply 1 like

Drink casein before bed. It's the one protein with a job while you sleep.

Emergency: call 911.

I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.