Different types of hair loss
Your hair has three different growth phases: the anagen phase, the catagen phase and the telogen phase. Your hair can grow up to 2 cm in the anagenic phase. In summer time your hair grows faster compared to winter time. The anagenic phase lasts 3 to 5 years. Asians can have a anagenic phase up to 7 years. The hair can grow up to 76 cm in the anagenic phase.
After the anagenic phase, your hair will enter the catagenic phase. This is a short overlap phase of approximately 10 days. The bloodflow to the hair follicle will be stopped in this phase.
After the catagenic phase, your hair follicles will enter the telogenic phase. This is a resting phase. In this resting phase, your hair will fall out. This is totally normal, because new hair will grow again after three months of inactivity. Every hair follicle has it’s own phase. Not all hair follicles follow the same phase. If this was the case, you would get bald every 3 to 5 years.
Sorts of hair loss
As you read above, it’s totally normal to experience some hair loss to some degree. As long as the hairs you are losing, are thick and long hairs (>3 cm), you don’t have to worry too much, because this is type of hair loss is called telogen effluvium. However, if the hairs that fall out are miniaturized / thin hairs, then you may have to consider a regimen to combat the hair loss, because you are probably experiencing male pattern baldness / hair follicle miniaturization.
More causes for hair loss
Besides telogen effluvium and male pattern baldness, you can experience hair loss due to stress. Stess causes the hair follicles to turn into the telogenic phase. This is the same hair loss as telogen effvluvium. This type of hair loss can grow back, since there is no hair follicle miniaturization.
Stress has also another type of hair loss: hair pulling. Because you are stressed out, you may pluck your hair to get some relieve, but this is a bad habit. It’s important to manage stress, for your hair and for your mind.