Hair does not just reflect styling habits. It often reveals what is happening inside the body. When certain nutrients are missing, strands may become thinner, weaker, or fall out more than usual. Vitamin deficiencies can quietly affect how hair grows, how strong it feels, and how well it holds on.
Below are the five vitamin deficiencies to watch for when addressing unexplained hair loss.
1. Iron
Iron supports oxygen delivery to cells, including those involved in hair growth. Without enough iron, the body prioritizes more critical functions, limiting the supply to hair follicles. This can lead to increased shedding and slow regrowth, especially in women. Iron deficiency often appears in those with low red meat intake or heavy menstrual cycles.
2. Vitamin D
Vitamin D contributes to follicle cycling. Low vitamin D can slow down the natural cycle of growth, resulting in thinner hair over time. People with limited sun exposure may be more susceptible to deficiency.
3. Biotin
Biotin supports keratin structure, a major protein in hair strands. Without adequate biotin, hair may snap easily or appear dull. Diets lacking eggs, nuts, or whole grains may not provide enough of this vitamin. When that happens, hair often reflects the shortage through breakage and brittleness.
4. Zinc
Zinc supports scalp function. It helps manage oil production and repair tissues. A lack of zinc may lead to flaking, scalp sensitivity, and hair that doesn’t anchor well. Shedding that seems excessive could signal this nutrient is missing. This deficiency is more common in restrictive diets or those with digestive issues.
5. Vitamin B12
B12 helps keep blood flowing to the scalp. Without it, hair growth slows down, and strands may lose their shine. Those who avoid animal products for long periods often see a drop in B12, which can affect how hair grows over time. That’s why it’s important to have B12 supplements to maintain healthy levels.Using a hair-thickening serum can help improve how hair looks while addressing vitamin gaps. A well-formulated anti-hair fall serum may support daily care routines while working to reduce breakage. Pairing it with serum with improved nutrition can support healthier scalp conditions.
