What are the causes of thinning hair on the top of the head?
Sep 22, 2024
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
In general, thinning hair on the scalp may be caused by aging, genetics, hormonal changes, iron-deficiency anemia, seborrheic dermatitis, and other factors. It is important to maintain a balanced diet in daily life, consume adequate nutrients beneficial for hair growth, exercise moderately, and reduce stress. It is recommended to seek medical advice promptly and receive appropriate treatment under the guidance of a healthcare professional.
In general, thinning hair on the top of the scalp may be caused by aging, genetics, hormonal changes, iron-deficiency anemia, seborrheic dermatitis, and other factors. It is recommended to seek medical attention promptly and receive appropriate treatment under a doctor's guidance. Specific causes are analyzed as follows:
1. Aging
As people age, hair follicles on the scalp gradually shrink, leading to thinner and sparser hair, especially on the crown. Non-pharmacological methods such as scalp massage and using shampoos containing biotin and zinc can help improve scalp blood circulation and slow down hair loss.
2. Genetics
Thinning hair on the crown may be related to hereditary factors. Individuals carrying genes sensitive to androgens may experience gradual shrinking of hair follicles, resulting in sparse hair on the top of the head. It is important to keep the scalp clean and choose shampoo products suitable for one’s hair type.
3. Hormonal Changes
Women experience significant hormonal fluctuations during pregnancy, childbirth, breastfeeding, and menopause. These changes can disrupt the hair growth cycle and lead to thinning hair on the crown. Consuming foods rich in estrogen may help regulate hormonal balance.
4. Iron-Deficiency Anemia
Iron-deficiency anemia, often due to an unbalanced diet, results in insufficient iron levels in the body, impairing hemoglobin synthesis and reducing nutrient supply to hair follicles on the scalp, thereby causing hair thinning. This condition may also present with symptoms such as pale complexion and fatigue. Patients may take medications such as ferrous sulfate tablets, polysaccharide-iron complex capsules, or folic acid tablets under medical supervision.
5. Seborrheic Dermatitis
Poor dietary habits, lack of sleep, and other factors may contribute to seborrheic dermatitis. Overactive sebaceous glands on the scalp and microbial infections (e.g., Malassezia) can cause hair loss and thinning on the crown, accompanied by symptoms like redness and scaling. Patients are advised to use medications such as selenium sulfide shampoo, ketoconazole shampoo, or vitamin B6 tablets as directed by a physician to alleviate symptoms.
In daily life, it is important to maintain a balanced diet, consume adequate nutrients beneficial for hair growth, exercise moderately, and manage stress to support overall hair health.
