--- title: A Third of People With Cancer Use Alternative Medicine description: A third of cancer patients use alternative therapies like supplements and yoga. These are the benefits—and drawbacks. canonical: https://time.com/5569384/alternative-therapies-cancer/ author: Jamie Ducharme article:opinion: false article:content_tier: free article:published_time: 2019-04-12T18:17:12.000Z article:modified_time: 2026-08-04T08:03:55.216Z article:section: Health og:title: A Third of People With Cancer Use Alternative Medicine. Here's Why That Could Be Dangerous og:description: Herbal supplements are the most popular og:url: https://time.com/5569384/alternative-therapies-cancer/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt91fe8a1f08b10521/698948254ee2629f4c31456c/herbal-supplements.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2079 og:image:height: 1169 og:image:alt: Close-Up Of Capsules On Table og:type: article twitter:card: summary_large_image twitter:title: A Third of People With Cancer Use Alternative Medicine. Here's Why That Could Be Dangerous twitter:description: Herbal supplements are the most popular twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt91fe8a1f08b10521/698948254ee2629f4c31456c/herbal-supplements.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # A Third of People With Cancer Use Alternative Medicine. Here's Why That Could Be Dangerous > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: August 2026. ## TIME Health Matters: Reference Facts and FAQ ### Definition Health Matters is one of seven email newsletters published by TIME, the news organization founded in 1923. The latest health news and expert advice on living well. Health Matters makes the fast-moving world of health more useful, surprising and human, from the latest science and medical breakthroughs to practical ideas for living better. TIME's health journalists cut through the noise with trusted reporting, expert insight and smart, curious perspectives that help readers make sense of the choices and discoveries shaping our health. 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Health Matters is TIME's daily health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free daily newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators. ## Video: Vitamins and Supplements Can't Replace a Balanced Diet, Study Says [Watch (HLS stream): Vitamins and Supplements Can't Replace a Balanced Diet, Study Says](https://cdn.jwplayer.com/manifests/if9i0IRY.m3u8) (1:23)  _Published 2019-04-09. A new research published in the Annals of Internal Medicine suggests that vitamins and supplements may not be enough to keep you healthy._  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Apr 12, 2019 6:17 PM UTC  Photo Taken In United States, New York City Photo Taken In United States, New York City Getty Images  by [Jamie Ducharme](https://time.com/author/jamie-ducharme/)  ## Jamie Ducharme Ducharme is a contributor to TIME. Apr 12, 2019 6:17 PM UTC About a third of cancer patients use alternative medicine — but many of them don’t tell their doctors, according to a [new research letter](https://jamanetwork.com/journals/jamaoncology/fullarticle/2730130) published in _JAMA Oncology_. [Complementary and alternative therapies](http://time.com/4377345/americans-complementary-medicine/) are those that people use in addition to or instead of traditional medical care. Out of about 3,100 cancer patients who responded to questions about cancer and complementary therapy use through the 2012 National Health Interview Survey, just over 1,000 reported using one or more of these therapies during the prior year, the research letter says. Of these, about a third said they did not tell their doctors that they were using alternative therapies. That’s potentially a problem, since alternative therapies [can come with health risks](https://jamanetwork.com/journals/jamaoncology/fullarticle/2687972?utm%5Fcampaign=articlePDF&utm%5Fmedium=articlePDFlink&utm%5Fsource=articlePDF&utm%5Fcontent=jamaoncol.2019.0349), especially if people halt conventional treatments to pursue them. And some complementary therapies — like [herbal supplements](http://time.com/5564574/supplements-vitamins-health/), which were taken by more than a third of the people using alternative methods — are not well-regulated and may interact poorly with conventional treatments like chemotherapy and radiation, doctors warn. High levels of antioxidants can interfere with radiation, for example, and herbal supplements [can become dangerous](http://time.com/5116664/are-herbal-supplements-safe/) when mixed with certain prescription drugs. Some alternative therapies, however, are widely recommended by oncologists. [Mind-body interventions](http://time.com/3555676/meditation-yoga-breast-cancer/) like yoga, [tai chi](http://time.com/5209233/tai-chi-chronic-pain/), meditation and mindfulness, which were each used by about 7% of patients, can keep people fit and energetic as they undergo treatment, [reduce the side effects](http://time.com/4733412/yoga-cancer-treatment-fatigue-pain/) of traditional therapies and [improve patients’ sleep](http://time.com/4950320/yoga-chemotherapy-sleep-problems/), stress and mental health. Many hospitals even have alternative medicine centers that offer these programs. Aside from supplements and mind-body therapies, people were most likely to turn to chiropractors, osteopaths and massage therapists for alternative interventions. Small numbers also used things like [acupuncture](http://time.com/4383611/acupuncture-alternative-medicine-pain/), energy therapy or homeopathic treatments. While some research finds that [acupuncture can help pain](http://healthland.time.com/2012/09/11/acupuncture-may-help-reduce-chronic-pain-after-all/), there’s very little evidence supporting practices like Reiki (energy healing). A large 2015 review of studies on [homeopathy](http://time.com/3741212/homeopathy-not-effective/) found that the practice does not have enough evidence to support its effectiveness. People who were white, female and younger were more likely than other cancer patients to use complementary therapies, the research letter says. Patients turn to alternative medicine for many reasons, including “persistent symptoms, psychological distress or to gain a sense of control over their care,” the researchers write. And while some complementary therapies may help with these issues, patients should always discuss their choices with a doctor to ensure they won’t endanger their overall care. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5569384/alternative-therapies-cancer/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5569384/alternative-therapies-cancer/"},"headline":"A Third of People With Cancer Use Alternative Medicine. 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