Androgenetic Alopecia Causes: What Really Triggers Hair Loss

Did you know more than 50% of men see some thinning by the time they turn 30? That’s not just aging – it’s a mix of hormones, genetics, and everyday choices. If you’re wondering why your hair is receding, the answer lies in a few key factors that work together.

Hormones and the DHT Factor

The biggest player is a hormone called dihydrotestosterone, or DHT. Your body turns testosterone into DHT with an enzyme called 5‑alpha‑reductase. DHT likes to bind to receptors in hair follicles, especially on the crown and front of the scalp. When it latches on, the follicles shrink, the growth phase shortens, and the hair becomes finer until it stops growing altogether.

Not everyone produces the same amount of DHT, and not all follicles react the same way. Men with higher enzyme activity or more sensitive receptors notice thinning earlier. Women can also be affected, but the pattern is usually broader rather than a distinct receding line.

Genes, Age, and Lifestyle Influences

Genetics set the stage. If your dad or granddad went bald, your chances jump dramatically. Researchers have identified several genes that control how easily DHT can bind to follicles. These genes also decide when the hair‑loss clock starts ticking.

Age amplifies the genetic plan. As you get older, your hair naturally becomes less resilient, and the cumulative impact of DHT grows. But lifestyle choices can speed up or slow down the process. Poor diet, chronic stress, and lack of sleep all raise inflammation, which makes follicles more vulnerable.

Smoking and excessive alcohol also tip the balance. They increase oxidative stress, which can damage the cells that keep hair growing. On the flip side, a diet rich in zinc, iron, and vitamins B and D gives follicles the nutrients they need to fight off DHT’s effects.

Even the way you treat your hair matters. Tight hairstyles, frequent heat styling, or harsh chemicals can irritate the scalp and worsen follicle shrinkage. Simple habits like gentle washing, avoiding tight bands, and limiting heat can help preserve what you have.

In short, androgenetic alopecia isn’t caused by a single thing. It’s a cocktail of DHT activity, inherited susceptibility, age‑related changes, and everyday habits. Understanding each piece lets you take smarter steps – whether that means using a DHT‑blocking shampoo, adjusting your diet, or talking to a doctor about medication.

Now that you know the why, you can decide what to do next. If you’re early in the process, lifestyle tweaks and over‑the‑counter solutions might be enough. For faster or more advanced loss, a dermatologist can offer prescription options that target the hormone directly. Either way, the sooner you act, the better your chances of keeping more hair for longer.