Here’s how factors like your age, ethnicity and even the time of year influence your hair’s growth. <\/p>
If you\u2019ve recently gotten a bad haircut, you\u2019re probably wondering one thing: how fast does hair grow?<\/p>\n
The answer, unfortunately, is a complicated one. The speed of hair growth on your scalp depends on a multitude of different factors. There is no universal answer, as it all depends on how old you are, your race, your diet, and even your hormones<\/a>.<\/p>\n If you\u2019re perfectly healthy, at the right age, and aren\u2019t going through stress, however, scientists have argued that there is a standard rate at which hair grows which changes across different races.<\/p>\n Healthy human hair typically<\/a> grows at a rate of 0.35mm a day, or 0.014 inches. This means your hair grows 2.45mm (0.1 inches) in a week, and 12.775cm (5 inches) every year.<\/p>\n However, according to studies, your growth may be influenced by\u00a0ethnic and geographical origin<\/a>.<\/p>\n It should be noted that the above hair-growth rates will not be the same for everyone. A variety of different factors come into play when it comes to growing your hair longer.<\/p>\n Age has a big influence when it comes to hair growth rates. Your hair will grow slower and thinner as you get older, with some follicles<\/a> dying off which can lead to baldness.<\/p>\n Hormones affect hair growth, too. It\u2019s known that during pregnancy women can grow hair more quickly and it comes in thicker due to a rise in estrogen. Your hair can also grow back differently after chemotherapy<\/a>.<\/p>\n Stress levels and illness\/wellness can reduce your hair\u2019s growth rate also. This includes, according to a StatPearls journal published by the National Library of Medicine<\/a>, a reduced rate of hair growth and even alopecia\/acute hair shedding after and during \u201cfebrile illness, severe infection, major surgery, severe trauma, postpartum hormonal changes, particularly a decrease in estrogen, hypothyroidism, discontinuing estrogen-containing medication, crash dieting, low protein intake, heavy metal ingestion, and iron deficiency.\u201d<\/p>\n Each hair follicle goes through three phases: anagen, catagen, and telogen.<\/p>\n In a normal healthy person\u2019s scalp, about 85 per cent of hairs are anagen hair and 15 per cent are telogen hair.<\/p>\n According to researchers at the Sampson Regional Medical Center in the US, a hair follicle usually grows anagen hair for almost four years, then rests for about four months. A new anagen hair begins to grow under the resting telogen hair and pushes it out. This is when we lose hair.<\/p>\n If there is some kind of stress to the body it can cause 70 per cent of anagen hair to precipitate into the telogen phase thus causing hair loss.<\/p>\n It\u2019s not just illness, stress or changing hormones that can cause an increase in catagen or telogen hair.<\/p>\n According to the British Journal Of Dermatology<\/i><\/a>, the seasons have a say in hair growth rates. The study posited that \u201cthe number of shed hairs reached a peak around August\/September, when least follicles were in anagen\u201d.<\/p>\n Read more:<\/strong><\/p>\n Here’s how factors like your age, ethnicity and even the time of year influence your hair’s growth. <\/p>\n","protected":false},"author":24,"featured_media":29669,"template":"","categories":[1],"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow.jpg",1200,517,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow-300x129.jpg",300,129,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow-768x331.jpg",768,331,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow-1024x441.jpg",800,345,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow.jpg",1200,517,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2023\/07\/how-fast-does-hair-grow.jpg",1200,517,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Here's how factors like your age, ethnicity and even the time of year influence your hair's growth.","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed\/29668"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media\/29669"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media?parent=29668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/categories?post=29668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}How fast does hair grow?<\/b><\/h2>\n
What are the hair growth stages?<\/b><\/h2>\n
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