Low iron stores, thyroid problems and some vitamin deficiencies can all cause or worsen hair thinning, especially in women. If you also feel tired, cold, or notice changes in weight or periods, ask a doctor about blood tests before spending on hair products, because fixing the cause comes first.
Iron
Low ferritin is common in women with heavy periods or plant-based diets. Only supplement after a test.
Thyroid
Both underactive and overactive thyroid can thin hair. Treatment by a doctor often lets hair recover.
Other checks
Your doctor may also look at vitamin D, B12 and other factors depending on your symptoms.
Questions
Should I just take iron pills?
No; too much iron can harm. Test first and follow your doctor.
Can scalp care still help?
Yes, alongside medical treatment it supports a healthy scalp.
Studies mentioned
These studies looked at ingredients or general approaches. None of them tested our treatments or products, so they are background, not proof.
- Almohanna HM et al. (2019). The Role of Vitamins and Minerals in Hair Loss: A Review. Dermatol Ther (Heidelb) 9(1):51-70.Review. Micronutrients such as iron, zinc, vitamin D and B vitamins play roles in the hair follicle cycle; deficiency may be a modifiable risk factor for hair loss.PubMed 30547302doi:10.1007/s13555-018-0278-6