Hair Health Signs of Underlying Disease: People often view hair solely in terms of style or grooming, but the truth is, hair reveals much more. Science has repeatedly proven that hair also indicates the state of our internal health. Each hair grows from a tiny follicle, which is directly connected to hormones, nutrition, the immune system, and metabolism. Because hair grows rapidly and reacts quickly to imbalances in the body, it often signals underlying problems even before other symptoms appear. If your hair suddenly starts falling out, changes color, or develops an unusual texture, it’s not just a bad hair day; it’s your body’s way of getting your attention.
Why does hair health provide these signals?
Hair follicles are among the most active parts of the body. They constantly require oxygen, nutrients, and a proper hormonal balance. When the body experiences nutritional deficiencies, hormonal changes, or immune-related problems, the effects are often seen first in the hair. The reason is simple: hair is not a vital organ for the body, so when resources are scarce, the body prioritizes other functions. This is why hair is considered the body’s early warning system. Several studies show that deficiencies in iron, zinc, niacin, or certain amino acids affect hair growth and increase hair loss. These changes often appear even before a person feels unwell.
What can changes in hair mean?
Hair doesn’t change without a reason. Genetics certainly plays a role, but sudden excessive hair loss, changes in texture, or the appearance of circular patches can indicate an underlying health problem.
Iron Deficiency and Anemia
Iron deficiency reduces the blood’s ability to carry oxygen. This directly affects the hair follicles, leading to rapid hair loss. This hair loss is usually spread across the entire scalp.
Thyroid Problems
Thyroid hormones control metabolism and hair growth. When thyroid levels are low, hair becomes dry, lifeless, and thin, and even eyebrow hair can fall out. When thyroid levels are high, the hair becomes very thin and weak.
Vitamin B12 Deficiency
A B12 deficiency can cause hair to become weak, dry, and prematurely gray. This means the hair follicles aren’t receiving the necessary support to produce strong, healthy hair.
What to do if your hair starts changing
First, consult a doctor and get the necessary tests done. Pay attention to your diet and avoid taking supplements unnecessarily. Try to reduce stress, and if you notice itching, redness, or patches on your scalp, see a dermatologist.
