Myths & Misconceptions
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The Hair Growth Cycle: A Biological Overview
A clear guide to the anagen, catagen, and telogen phases that shape every strand’s lifespan.
Source: Int J TrichologyPublished on: March 24, 2024
Abstract in Plain English
Every strand of hair follows a repeating growth pattern controlled by molecular signals. This review summarizes the three major phases of the hair cycle.
Key Findings
- Anagen (Growth Phase): Lasts 2–6 years; most hair resides here.
- Catagen (Transition Phase): Two weeks of follicle regression.
- Telogen (Resting Phase): Three months before shedding.
- Growth cycle imbalance causes thinning and reduced density.
Why It Matters
Understanding these phases empowers readers to interpret shedding patterns and identify when intervention might help restore balance.
Study Limitations
Cycle duration varies widely by age, genetics, and scalp region.
Citation & Review Team
Full Citation
Randall VA et al., Int J Trichology, 2020.Review Team
Author: Student Editor
Fact-Checker: Dermatology Researcher
Disclaimer
This article is for educational purposes only and not a substitute for professional medical advice.