--- title: Losing Hair Lately? This Might Be Why description: A new study suggests that shedding more strands in the summer and fall is perfectly normal. canonical: https://time.com/5002231/hair-loss-study/ author: TIME article:opinion: false article:content_tier: free article:published_time: 2017-10-30T15:48:03.000Z article:modified_time: 2026-02-23T18:02:32.022Z article:section: Health og:title: Losing Hair Lately? This Might Be Why og:description: A new study suggests that shedding more strands in the summer and fall is normal og:url: https://time.com/5002231/hair-loss-study/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt0fcad515a40bdcbd/6988e3cf0a4a2226aa9d0831/hair-brush-shedding.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 5291 og:image:height: 2976 og:image:alt: Hair brush with hair in it og:type: article twitter:card: summary_large_image twitter:title: Losing Hair Lately? This Might Be Why twitter:description: A new study suggests that shedding more strands in the summer and fall is normal twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt0fcad515a40bdcbd/6988e3cf0a4a2226aa9d0831/hair-brush-shedding.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Losing Hair Lately? This Might Be Why > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: August 2026. ## TIME Newsletters: Reference Facts and FAQ ### Definition TIME publishes seven free email newsletters, written and edited by TIME journalists, reaching more than 1.1 million engaged readers. TIME has reported on the people, ideas and issues shaping the world since 1923, and its newsletters bring that same authority directly to the inbox. 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Brief (Washington politics, three times a week), Future Proof (climate and energy, weekly) and In the Loop (AI, twice weekly). All are free at time.com/newsletters and together reach more than 1.1 million engaged readers. #### Which TIME newsletter should I subscribe to? It depends on what you follow. For a daily briefing, The Brief. For health, Health Matters. For Washington politics, D.C. Brief. For AI and technology, In the Loop. For climate and energy as a business story, Future Proof. For culture recommendations, Worth Your Time. For how TIME's journalism gets made, Inside TIME. Readers can select any combination at time.com/newsletters. #### Are TIME's newsletters free? Yes. All seven TIME newsletters are free to join at time.com/newsletters. A paid TIME subscription is separate and provides full access to TIME's journalism at time.com/subscribe-agent. #### Who writes TIME's newsletters? TIME journalists write them. Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. by [Amanda MacMillan / Health](https://time.com/author/health-com/) ## Amanda MacMillan / Health Contributor Oct 30, 2017 3:48 PM UTC  Getty Images by [Amanda MacMillan / Health](https://time.com/author/health-com/) ## Amanda MacMillan / Health Contributor Oct 30, 2017 3:48 PM UTC If you’ve been staring at your brush or your shower drain and feeling like you’ve been losing a lot of [hair](http://www.health.com/beauty) lately, don’t despair. A recent _British Journal of Dermatology_ study [suggests that shedding more strands in the summer and fall](http://onlinelibrary.wiley.com/doi/10.1111/bjd.16075/abstract) is normal. A seasonal pattern of hair loss has been long suspected; it’s been observed anecdotally and documented in previous small studies. But those studies have focused on just one demographic or geographic location, so it hasn’t been possible to know if those findings apply to everyone. **_RELATED:_** [**_10 Myths You Shouldn’t Believe About Hair Loss in Women_**](http://www.health.com/health/gallery/0,,20872506,00.html) Researchers at Johns Hopkins and Washington University changed that by compiling Google Trends data from eight countries in four hemispheres with high search rates for the term “hair loss.” They looked at search volume from 2004 through 2016, and compared the data month to month and season to season. Across all eight countries, the results were the same: People searched the Internet using phrases related to hair loss more frequently in the summer and fall compared to the winter and spring. The finding is relevant to doctors whose patients complain of hair loss in those two seasons, the authors say, and it may be useful in assessing how effective [certain therapies](http://www.health.com/beauty/how-to-regrow-hair) are at treating the condition. But more research is needed, they add, to determine exactly why this pattern happens—and how much people should care. **_RELATED:_** [**_6 Nutrients for Healthy Hair_**](http://www.health.com/health/gallery/0,,20734150,00.html) “Mildly increased hair loss in the summer and fall is normal,” co-author Dr. Shawn Kwatra, assistant professor of dermatology at Johns Hopkins University School of Medicine, tells _Health_. “This is speculative, but from an evolutionary perspective one of the roles of hair loss is to provide warmth,” he says. “This would be less necessary during the summer months.” The tendency to grow thicker coats in the winter—and shed them in the summer—has also been documented in a variety of animals, including monkeys, cats, dogs, and camels. In humans, seasonal hair loss has been reported more in women than in men, Kwatra says, although the current study could not distinguish Google searches by gender. According to the [American Academy of Dermatologists](https://www.aad.org/public/skin-hair-nails/hair-care/hair-loss-vs-hair-shedding), it’s normal to lose between 50 and 100 hairs a day. Noticing a little extra hair in the shower drain may be nothing to worry about, says Kwatra, especially if it’s during a warm-weather month. But if those extra strands are enough to freak you out—or, ahem, send you to Dr. Google—it may be worth checking with your physician. About 40% of Americans suffer from [unwanted hair shedding](http://www.health.com/health/gallery/0,,20872506,00.html#the-truth-about-hair-loss-2), and many women as well as men will notice an increase in hair loss as they get older. **_RELATED:_** [**_From Chemo Baldness to Dreadlocks, 5 Women Talk Poignently About Their Hair_**](http://www.health.com/beauty/from-chemo-baldness-to-dreadlocks-five-women-poignantly-talk-about-their-hair) In addition to seasonality, hair loss can be caused by a [stressful event](http://www.health.com/beauty/hair-falling-out) (like childbirth or a high fever), weight loss of more than 20 pounds, or a change in birth-control pills. Factors like diet, heredity, and thyroid levels can play a role as well. Luckily, not all hair loss is permanent, and your doctor may be able to suggest remedies—like supplements or topical treatments—that may help to slow the process. Significant hair loss may also indicate another underlying health condition, says Kwatra, so it’s important to get checked out by a pro. _This_ [_article_](http://www.health.com/beauty/hair-loss-seasonal) _originally appeared on_ [_Health.com_](http://www.health.com/?xid=time) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5002231/hair-loss-study/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5002231/hair-loss-study/"},"headline":"Losing Hair Lately? 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