The Claim

In young resistance-trained males, daily consumption of 35 grams of casein protein, as part of a total protein intake of 1.8 g/kg body weight, increases lean soft tissue mass by 2.0–2.8 kg over a 10-week period when combined with a supervised resistance training program.

Source: Daytime and nighttime casein supplements similarly increase muscle size and strength in response to resistance training earlier in the day: a preliminary investigation

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
58score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

If young guys who lift weights drink a protein shake with 35 grams of casein every day — and keep training — they could gain about 2 to 2.8 kilos of muscle in 10 weeks.

See the scientific wording

In young resistance-trained males, consuming 35 grams of casein protein daily as part of a total intake of 1.8 g/kg body weight increases lean soft tissue by approximately 2.0–2.8 kg over 10 weeks when combined with a supervised resistance training program.

What the research says

1 study

  1. Study: Daytime and nighttime casein supplements similarly increase muscle size and strength in response to resistance training earlier in the day: a preliminary investigation

    The study gave young men 35 grams of casein protein every day for 10 weeks while they lifted weights, and they gained about 2 to 2.8 kilograms of muscle, just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.