Experts Share the Telltale Signs You're Not Eating Enough Protein

# Experts Share the Telltale Signs You're Not Eating Enough Protein

Protein deficiency creeps up quietly. You might notice your muscles feel weaker, your hair thins, or your skin loses elasticity before you connect these changes to what's on your plate.

Registered dietitian nutritionists point to specific warning signs. Persistent muscle weakness, especially in the legs, signals your body is breaking down muscle tissue for energy. Slow wound healing, increased infections, and brittle nails all point to inadequate protein intake. Hair loss and thin, peeling nails occur because your body prioritizes vital organs over appearance when protein runs low.

Fatigue often accompanies protein deficiency. Your body struggles to maintain stable energy levels without sufficient amino acids. Swelling in your feet, ankles, or face can develop because low protein reduces albumin production, allowing fluid to accumulate in tissues.

The amount you need depends on body weight and activity level. Most adults require 0.8 grams per kilogram of body weight daily, though strength athletes need 1.6 to 2 grams per kilogram. A 150-pound person needs roughly 55 grams daily, while someone training intensely may need 110 grams or more.

Timing matters just as much as total intake. Spreading protein throughout the day optimizes muscle protein synthesis more effectively than consuming it all at one meal. Nutrition researchers recommend 25 to 40 grams of protein per meal for adults over 40, as this amount triggers maximum muscle-building responses.

Quality sources include Greek yogurt, eggs, fish, chicken, legumes, and nuts. Plant-based eaters should combine different protein sources to get all essential amino acids.

If you're experiencing persistent fatigue, muscle weakness, or slow recovery from exercise, evaluate your protein intake.