Hair Loss After Weight Loss: Causes, Risks, and Prevention
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If you have a nutrient deficiency, food alone may not be enough to replenish your nutrient stores and a supplement may be necessary. However, research suggests that if you don’t have a nutrient deficiency, supplements might not benefit hair loss (1). Deficiencies in iron, zinc, protein, selenium, and essential fatty acids have all been linked to hair loss (13, 1). Notably, the participants with hair loss had much lower levels of zinc and vitamin B12 both before and after surgery (9). If you’re getting enough nutrients, “your hair will rebound and there will be no permanent damage,” Kraftson said.
How do trees and green spaces enhance our health?
Those can be signs of a more serious condition and should be evaluated by a doctor. If you have healthy hair on the back or side of your head, a doctor can surgically remove hair strands from those areas and graft them into your scalp in a bare area. It’s another expensive treatment that isn’t generally covered by insurance, but it tends to be a long-lasting solution.
Symptoms of hair loss in women
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Not getting enough iron, protein or vitamin B12 in your diet can also cause your hair to thin. If this happens to you, talk to your doctor about supplements. These molecules react with others to cause oxidative stress, which can harm cellular DNA. A 2018 review found that cells in the hair follicles of scalps with hair loss are extremely sensitive to oxidative stress. Because it’s a vasodilator, caffeine may also help improve blood flow to your scalp, promoting hair growth.
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Medical treatments
Their effectiveness largely depends upon what type of alopecia you have and how quickly you start treatment. Here, dermatologists share what you need to know about alopecia, including possible causes, treatment options and what you can do to prevent more hair loss. The caffeine also boosted hair root width and prolonged the growth phase of hair. It had a growth-promoting effect when tested on female hair follicles as well.
Other times, your healthcare provider will need to do some detective work to figure out what’s causing your hair loss. It's typical to lose some hair every day as part of your hair’s usual growth cycle. For most people, the lost hair grows back, and you maintain a full head of hair. But illness, hormonal changes, stress, aging and inherited conditions can interfere with your hair’s growth cycle. More hair falls out, but new strands don’t always grow back. Even if your hair loss is hereditary, there are treatments that exist that can help slow or reverse hair loss.
What are the symptoms of hair loss?
If finasteride works for you, you will need to keep taking it to continue getting results. Before taking this medication, be sure to discuss possible side effects with your dermatologist. While at-home treatments offer convenience, a procedure performed by a board-certified dermatologist tends to be more effective.
You may not be getting enough protein each day and that can affect your hair growth. If you have alopecia, you can help hold onto your tresses by avoiding behaviors that are known to contribute to temporary and permanent hair loss, Mirmirani says. Alopecia areata is an autoimmune disease that causes hair to fall out in nickel- or quarter-size patches. “Your body’s immune system is attacking the hairs,” Brodell says. It’s usually genetic, but it can also be triggered by diseases or disorders that attack the hair follicles.
When to see a doctor
Some research, including a 2024 review, suggests that there may be a connection between vitamin D deficiency and alopecia. Although more research is needed, it’s possible that treating this deficiency could help with hair regrowth. Extreme diets that are too low in protein or certain vitamins, such as iron, can sometimes cause excessive hair shedding. Telogen effluvium is usually a temporary condition that resolves over time, but it is advisable for people to contact a doctor to determine the cause. A doctor may need to treat the underlying cause of the condition to reduce hair loss.
Very low protein diets
Especially if you’re vegan or vegetarian, you may need to increase the amount of protein you consume. “Eating well, sleeping well, exercising, not smoking — all of those are important to hair,” Mirmirani says. Several serious diseases also attack the hair follicle, says Robert Brodell, a dermatologist at the University of Mississippi Medical Center. Most of us shed hair a little at a time — pretty much all the time. Minoxidil may irritate your scalp and cause dryness, scaling, itching and/or redness. Other essential oils to consider include lavender, lemongrass, and peppermint.
But because the signs are subtle, hair loss is sometimes the first symptom women notice, Colavincenzo says. The FDA has approved this newer treatment to help with hair growth. On average, most people lose about 100 strands of hair a day. And with new strands growing to take place of the ones lost, most won’t notice a difference. A healthcare provider might recommend using minoxidil (Rogaine®). You can purchase the 2% or 5% solution over the counter (OTC).
Hair typically falls out in small, round patches about the size of a quarter. If you notice hair loss, experts recommend as a first step asking your health care provider for a basic blood test to check for nutrient shortages. Working with a dermatologist, you can begin identifying what might be causing your hair loss. Your doctor will ask about your health, your medications and your family history.
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