You might be surprised to learn how common hair loss is in your 30s. During this period, many men begin to notice a receding hairline or thinning hair, which is frequently caused by hormonal changes like DHT and genetics. Remember, however, that environmental factors, poor nutrition, stress, and lifestyle choices can also play a role. It's crucial to recognize it early on and take appropriate action to control it before it worsens. Determining the reason behind any changes you notice can help you take control of the health of your hair.