Protein & Nutrition Blog – Marmels

Bar chart of protein per typical serving, from 26 g in chicken breast and 12 g in Marmels Protein Chocolate to 0.5 g in an apple, with an 8 g floor line

Signs of Low Protein Intake: 7 Quiet Symptoms to Watch For

by Mo Mandegar, PhD on May 21 2026

Outright protein deficiency is rare in the United States. Sub-optimal protein intake is common, and the signs are quiet enough to blame on age, stress, or sleep. Here are seven symptoms to watch for, the daily target most current research supports, and the simplest way to close the gap.

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