Hair is primarily made of protein, so when the body doesn’t get enough of it, hair growth may slow, and shedding can increase. The body prioritizes essential functions first, often reducing support for non-vital systems like hair. This shift can lead to thinning or bald spots over time, particularly along the part or crown.
Why Hair Needs Protein
Each strand contains keratin, a protein built from amino acids. These amino acids come from food. When the body receives enough protein, it can continue building and repairing hair. But when intake drops, hair becomes less of a priority. Growth slows, and existing strands may weaken. This is common in restrictive diets or those that skip protein-rich meals regularly.
How Protein Deficiency Affects Hair
Hair grows in cycles, and in a healthy state, most of the hair is in a growing phase. A protein shortage can shift more strands into the resting or shedding stage. This may take a few months to show before the effects become visible. Hair might feel thinner or fall out more than usual during brushing or washing.
Who’s at Risk
People on crash diets or extremely low-calorie plans may not get enough protein. Vegans and vegetarians can also be affected if plant-based protein sources are limited or poorly balanced. Even those recovering from illness or surgery may experience temporary hair loss due to low nutrient intake.
Restoring Hair Through Nutrition
Adding more lean protein—such as eggs, tofu, beans, chicken, or fish—can help support healthy growth again. Once the body has enough to support all functions, hair often begins to recover, although regrowth may take time.
While adjusting the diet, using targeted hair products may help improve how hair looks and feels during recovery.Those seeking visible improvement may benefit from trying the best hair growth products, especially when paired with a balanced, protein-rich eating plan.
