Anagen (growth phase): Most hair is growing at any given time.

Waist-length hair or longer is only possible to reach for people with long anagen.

During the anagen phase, which lasts for three to four years, the hair grows.

The root itself is slightly enlarged, so this hair was in late anagen.

The length in time for the anagen phase is genetically defined.

These active follicles are in what is called the anagen phase.

This is a 1- to 2-week transition stage between anagen and telogen.

If the anagen phase increases beyond what is normal; that region of the body will experience excessive hair growth.

A hair "pull test" is performed to see if growing, or anagen, where hairs are pulled out easily.

The longer the anagen phase, the longer the hair.

The anagen phase is known as the growth phase.

The longer the hair stays in the anagen phase, the faster and longer it will grow.

The amount of time the hair follicle stays in the anagen phase is genetically determined.

In this type of hair loss, the growth (anagen) cycle becomes shorter and shorter.

The three stages of hair growth are the anagen, catagen, and telogen phases.

The anagen phase begins again once the telogen phase is complete.

The process of cellular division that increases the length of the hair shaft is the active, or anagen, phase.

The catagen phase follows the anagen stage.

The catagen phase is a short transition stage that occurs at the end of the anagen phase.

Signals sent out by the body determine when the anagen phase ends and the catagen phase begins.

Chemotherapy for cancer, on the other hand, interferes with anagen, the growing phase, because the drugs are designed to disable fast-growing cells.

It is often categorized according to when it takes place during the hair growth cycle: anagen, catagen, and telogen.

Medications can lead to two types of hair loss: telogen effluvium and Anagen effluvium.

In a normal full head of hair, about 90 percent of the hairs are in a growing phase, called anagen, that lasts one to seven years.

Then anagen resumes.