hårväxten

Hårväxten, often translated as "hair growth," is a biological process involving the development and extension of hair fibers from follicles embedded in the skin. This process is cyclical and occurs in distinct phases: anagen, catagen, and telogen. The anagen phase is the active growth period, during which cells in the hair follicle divide and the hair shaft lengthens. This phase can last for several years, depending on the body area and individual genetics.

Following the anagen phase is the catagen phase, a short transitional period where hair growth stops and the follicle shrinks. This phase typically lasts a few weeks. The final phase is the telogen phase, a resting period where the old hair is shed and a new hair begins to form within the follicle. This phase can last for several months before the cycle restarts with a new anagen phase.

The rate and pattern of hårväxten are influenced by a combination of genetic, hormonal, and environmental factors. Hormones, particularly androgens like testosterone, play a significant role in the development of secondary sexual hair during puberty. Nutritional status, stress levels, and certain medical conditions can also impact the health and rate of hair growth. The density, texture, and color of hair are largely determined by genetics. Understanding these phases and influencing factors is key to comprehending the overall process of hårväxten.