Protein powder during fasting may save your muscles while you shed pounds

NCT ID NCT07241689

Completed Disease control Sponsor: Nanyang Technological University Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether taking a protein supplement on fasting days during a 4-week alternate-day fasting program could help young men with overweight lose fat while keeping muscle. Twenty-six men aged 21 to 35 either ate a small meal (400-600 kcal) or the same meal plus a whey protein shake on fasting days. Researchers measured body composition, blood sugar, and blood pressure before and after the program.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: whey protein powder (25 g protein, 125 kcal)
What this could lead to: If it works, this could point toward a way to lose weight while preserving muscle, which may help manage obesity.
What could go wrong: This is a small, early study with only 26 young men, so results may not apply to others. The fasting regimen is strict and may be hard to follow long-term.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Intermittent Fasting Obesity obesity disorder Overweight platelet-type bleeding disorder 10 Weight Loss

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

OBESITY & OVERWEIGHT

Contacts and locations

Locations

Nanyang Technological University

Singapore, Singapore

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