Is Your Diet Affecting Your Hair? What Nutrition Really Has to Do With Hair Loss
Hair is not an essential organ. That sounds rather harsh, but it explains something important about nutrition and hair loss.
When the body is short of energy or certain nutrients, it prioritises the organs and systems needed to keep you alive. Hair growth may be affected along the way. This is one reason restrictive diets, rapid weight loss and genuine nutritional deficiencies can sometimes be followed by increased shedding.
That does not mean every person with thinning hair needs a handful of supplements. The relationship between food and hair is considerably more sensible than social media often makes it sound.
Protein matters
Hair fibres are made largely from a protein called keratin. A severely protein-restricted diet can contribute to hair loss, and dermatologists include insufficient protein among the nutritional problems that may cause noticeable shedding.
For most South Africans eating a varied diet, the answer is not protein powders or specialist “hair foods”. Regular sources such as eggs, fish, chicken, meat, dairy, beans, lentils, soya and other legumes can all contribute to normal protein intake.
The bigger concern tends to be people who are severely restricting food, skipping meals regularly or following an unbalanced weight-loss plan.
Iron deserves particular attention
Iron deficiency is one of the nutritional issues doctors commonly consider when investigating diffuse hair shedding.
A 2026 systematic review and meta-analysis found lower ferritin — a marker related to the body’s iron stores — in people with telogen effluvium compared with controls. However, the studies varied considerably, so a low ferritin result should be interpreted by a healthcare professional rather than treated as a universal explanation for hair loss.
Women who are still menstruating can have higher iron requirements than men and post-menopausal women. Heavy periods can further increase the risk of iron deficiency.
Useful dietary sources include lean meat, seafood, beans, lentils, spinach, peas, nuts and iron-fortified foods. The body absorbs iron from plant sources less readily than iron from meat, and vitamin C can improve the absorption of plant-based iron.
What about zinc and vitamin D?
Deficiency in zinc can be associated with hair loss, but that does not mean more zinc produces more hair in someone whose levels are already normal.
Vitamin D has also attracted considerable interest. Recent studies have found associations between lower vitamin D levels and some types of hair loss, including telogen effluvium and androgenetic alopecia. The important word is association. It does not prove that taking vitamin D will reverse every case of thinning hair.
A balanced diet beats a “hair diet”
There is no scientifically established menu that guarantees thicker hair.
The sensible goal is adequate energy, sufficient protein and a varied diet containing vegetables, fruit, whole grains, healthy fats and a mixture of protein sources.
If your hair has suddenly begun shedding, particularly alongside tiredness, heavy periods, unexplained weight changes or a very restricted diet, speak to your GP or dermatologist. Blood tests can be far more useful than guessing which supplement you might need.
How Netwurks Pro can support your hair while you focus on nutrition
Good nutrition supports hair from within, while the way you care for your scalp and existing hair matters on the outside.
If nutritional changes or a deficiency have left your hair feeling finer, drier or more fragile, a gentle and consistent routine can help protect the strands you have while the underlying issue is addressed. Netwurks Pro is designed to support scalp care, cleansing, hydration and conditioning, helping hair feel softer, more manageable and less vulnerable to unnecessary breakage.
Think of it as one part of the bigger picture: nourish your body properly, investigate any suspected deficiencies with a healthcare professional, and give your hair the consistent external care it needs along the way.
