Medically the evaluation by Cynthia Cobb, DNP, APRN, WHNP-BC, FAANP — written by Amanda Barrell on October 23, 2019

On average, hair has tendency to grow between 0.5 and 1.7 centimeters every month. This is identical to approximately 0.2 come 0.7 inches.

You are watching: What are the most important factors influencing hair growth?

This estimate originates from The Trichological Society. However, too many of various factors affect the speed of hair growth.

Males, because that example, may find that your hair grows much faster than the of females. Other things that influence the speed of hair growth include genetics, age, health, and also pregnancy.

Bone marrow, i m sorry is the soft substance present inside the bones, is the only part of the body the grows quicker than hair.

The lips, palms the the hands, and soles the the feet are the just parts of the human body on which hair does no grow. The main purpose that hair is to safeguard the body and also keep the warm.

Keep reading for more information on exactly how hair grows and the various determinants that influence the rate of that is growth.

Stages that hair growth

Share ~ above PinterestA human being has about 100,000 hair follicles on their scalp.
People room born with around 5 million hair follicles. This are tiny pockets in the skin that hair grows out of.

Around 100,000 of these follicles space on the scalp. People with oval shame follicles have an extremely curly hair, when those with round follicles have straight hair.

The step of hair growth are together follows:

Each follicle consists of a hair root, i m sorry is do of cell of protein.As blood circulates roughly the body, the delivers oxygen and also nutrients to the protein cells, i m sorry they should multiply.As the protein cells multiply, they construct hair, i beg your pardon pushes up through the skin.As the hair grows out of the skin, it passes an oil gland. This lubricates the hair with the oil it requirements to remain soft and shiny.By the moment the hair is long sufficient to come v the skin, that is dead. As a new hair grows underneath, it pushes the dead hair the end of the skin. The hair then drops out or is shed.

Not all hair follicles room in activity at the exact same time. Follicles ~ above the scalp, because that example, will grow hair because that a few years before becoming inactive because that a period. This inactive component of the hair expansion cycle is referred to as telogen.

People lose around 50–100 hairs from their body every day as part of the common hair development cycle.

Factors that affect hair growth

Everyone’s hair is different, and also lots of components can influence how conveniently it grows.

These include:

Genetics: A who genes will certainly dictate how quickly their hair will grow.Sex: masculine hair grows quicker than woman hair.

Telogen effluvium occurs once stress prompts the hair root to go into the telogen stage of the hair cycle as well early. It have the right to mean the as countless as 70% that scalp hairs autumn out within about 2 months.

People suffering telogen effluvium often discover that their hair comes out in handfuls. That is usually many noticeable ~ above the scalp however can impact any component of the body.

See more: Replace Cabin Air Filter Toyota Corolla, Toyota Corolla Air Filter In Greenville

Common reasons of telogen effluvium include:

childbirthsevere infectionsevere illnesssurgeryoveractive or underactive thyroid glandnot eating sufficient protein

Several drugs can likewise cause telogen effluvium. These include:

retinoidsnonsteroidal anti-inflammatory medicine such as ibuprofen

Telogen effluvium will certainly usually clear up on the own as soon as a person has sought therapy for the cause. According to the American Osteopathic university of Dermatology, the quantity of shedding has tendency to decrease end a period of approximately 6–8 months.