Protein & Nutrition Blog – Marmels

Protein and Collagen on Glucagon-Like Peptide-1 (GLP1) Drugs

Protein & Nutrition Blog – Marmels

Protein and Collagen on Glucagon-Like Peptide-1 (GLP1) Drugs

by Mo Mandegar, PhD on Aug 24 2026
Research from 2025 and 2026 found people taking a glucagon-likepeptide-1 (GLP-1) medication averaging 0.6 grams of protein perkilogram of body weight per day, less than half current guidance,with 88 percent falling short. Protein and collagen both come up inthis conversation, but they do different jobs and the evidence is notequally strong. Here is what the trial data shows about lean mass,where collagen honestly fits, and what to eat when appetite is capped.
How Much Protein Do You Actually Need to Build Muscle?

Protein & Nutrition Blog – Marmels

How Much Protein Do You Actually Need to Build Muscle?

by Mo Mandegar, PhD on Aug 04 2026
You can train hard and still stall if you are under-eating protein.For building muscle, research keeps landing on about 1.6 grams perkilogram of body weight a day — roughly double the Recommended DietaryAllowance (RDA) and around 112 grams for a 155-pound adult. Here iswhat the number means and how to hit it across a normal day.
How Much Protein Do Women Need? What the Research Says

Protein & Nutrition Blog – Marmels

How Much Protein Do Women Need? What the Research Says

by Mo Mandegar, PhD on Jun 04 2026
Most protein research was built around men, and women inherited numbersthat were never really theirs. Current studies suggest most active womenneed 1.2 to 2.0 grams of protein per kilogram daily — far above the0.8-gram minimum — with needs climbing in midlife. Here is how much youactually need, by activity and life stage, and how to close the gap.
Signs of Low Protein Intake: 7 Quiet Symptoms to Watch For

Protein & Nutrition Blog – Marmels

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-optimalprotein intake is common — and the signs are quiet enough to blameon age, stress, or sleep. Here are seven symptoms to watch for, thedaily target most current research supports, and the simplest wayto close the gap.
Chart showing why the Recommended Dietary Allowance (RDA) for protein is outdated compared to current research-based intakes

Protein & Nutrition Blog – Marmels

Is the Recommended Dietary Allowance (RDA) for Protein Outdated?

by Mo Mandegar, PhD on Apr 30 2026
The Recommended Dietary Allowance (RDA) for protein (0.8 g/kg) was set as a deficiency floor, not an optimization target. Most active adults benefit from 1.2–1.6 g/kg or more. Here's what the latest research from the ISSN, NHANES, and recent peer-reviewed reviews actually says.