It started with nausea and loss of appetite.<\/p>\n\n\n\n
Robert Grafton, of Turnersville, New Jersey, tried to convince himself he was just coming down with something one weekend in mid-March. Then came the itching and dark urine. Grafton, a former interventional radiology technologist whose wife is a nurse, recognized the hallmarks of liver failure<\/a>.<\/p>\n\n\n\n The otherwise healthy 54-year-old had a gut feeling that his herbal and dietary supplements<\/a> were the culprit.<\/p>\n\n\n\n \u201cI stopped taking everything, thank goodness,\u201d Grafton said. \u201cIf I hadn\u2019t known, if I was not in the medical field, I might have thought, \u2018Oh, I think I\u2019m getting sick. I need to take some more of these supplements to help me feel better.\u2019\u201d<\/p>\n\n\n\n When his symptoms had only worsened by midweek, Grafton visited his primary care physician. The doctor, he said, suspected hepatitis A<\/a>, a liver infection that can be caused by consuming food or drink contaminated with the hepatitis A virus. Grafton\u2019s laboratory test results showed otherwise.<\/p>\n\n\n\n \u201cMy liver enzymes were super elevated, my bilirubin was really high<\/a> \u2014 all the signs of liver failure,\u201d Grafton said. \u201cI pretty much broke down, my wife as well. I was, at that point, thinking it was liver cancer, pancreatic cancer or something.\u201d<\/p>\n\n\n\n That Friday, less than a week after his symptoms had begun, Grafton was admitted to Thomas Jefferson University Hospital in Philadelphia, where he received a diagnosis.<\/p>\n\n\n\n \u201cIt turns out I had something called a drug-induced liver injury<\/a>, which came from my supplements.\u201d<\/p>\n\n\n\n Rising rates of liver damage<\/strong><\/strong><\/p>\n\n\n\n The liver is responsible for more than 500 functions in the human body, including filtering harmful substances from the blood. Some people\u2019s livers metabolize toxins more slowly than others, but too much of certain drugs can overwhelm even the healthiest liver.<\/p>\n\n\n\n When taken in excess, acetaminophen, for example, the active ingredient in Tylenol, is among the most common causes of drug-induced liver injury<\/a>, also called toxic hepatitis. Pharmaceutical products aren\u2019t solely the cause. Herbal and dietary supplements<\/a> are causing liver damage with mounting prevalence.<\/p>\n\n\n\n From 1995 through 2020, supplement-related liver failure requiring U.S. patients to be waitlisted for transplants increased eightfold, according to a 2022 study in the journal Liver Transplantation<\/a>. In addition, a 2017 review in the journal Hepatology<\/a> found that 20% of liver toxicity cases nationwide are tied to herbal and dietary supplements. Because \u201cmulti-ingredient nutritional supplements\u201d caused the majority of those cases, the authors said, it\u2019s hard to pinpoint which component(s) may be to blame.<\/p>\n\n\n\n Whereas dietary supplements typically contain nutrients such as vitamins, minerals and amino acids<\/a> from a range of sources such as fish oil, herbal supplements are a subset of dietary supplements composed of plant-based ingredients<\/a>.<\/p>\n\n\n\n Liver damage linked to supplements is rare. How rare is unclear.<\/p>\n\n\n\n What is known is why cases are on the rise: More Americans are taking supplements. As many as 3 in 4 adults 18 and older take them, according to a 2024 survey by the Council for Responsible Nutrition<\/a>, a trade group representing the dietary supplement and functional food industry. Almost 4 in 5 users said they prefer supplements to prescription or over-the-counter medications.<\/p>\n\n\n\n By comparison, the 2017\u20132018 National Health and Nutrition Examination Survey<\/a> showed that 58% of adults 20 and older had used a dietary supplement in the past 30 days.<\/p>\n\n\n\n \u201cI think people assume these things are safe,\u201d said Dr. Dina Halegoua-De Marzio, a Jefferson Health hepatologist who treated Grafton. \u201cThe No. 1 reason we see people taking these are for good health or to supplement their health, and so I don\u2019t think that they realize that there is a real risk here.\u201d<\/p>\n\n\n\n Grafton was one such consumer. The father of five became more health-conscious when he hit 50, going to the gym and starting a supplement regimen that included fenugreek<\/a>, DHEA<\/a>, ashwagandha<\/a>, L-carnitine<\/a> and nitric oxide<\/a>. He continued that cocktail, with few changes, for years without incident. About a month before he got sick, Grafton added turmeric<\/a> pills to the mix, with the goal of reducing inflammation.<\/p>\n\n\n\n Then Grafton saw the social media promo he said helped set his health crisis in motion.<\/p>\n\n\n\n Ironically, he bought an advertised turmeric-based liquid supplement in part because it claims to support long-term liver health. Similar products are widely available.<\/p>\n\n\n\n \u201cThe whole push with that is that you\u2019re getting a super-high, concentrated dose of turmeric and dandelion root<\/a> and milk thistle<\/a>, which I have always known from my medical past is good for liver health,\u201d Grafton said. \u201cIt all sounded good. \u2026 I thought I did enough digging.\u201d<\/p>\n\n\n\n He fell ill within a week of adding the liquid supplement to his routine.<\/p>\n\n\n\n Even though Grafton stopped the turmeric pills the day he started the turmeric drink, Halegoua-De Marzio said, turmeric overload most likely caused his liver injury. Not only was the drink ultra-concentrated; the pills contained 2,250 mg of curcumin<\/a>, a substance that comes from the root of the turmeric plant. The pills also include black pepper extract, which Halegoua-De Marzio warned increases absorption twentyfold.<\/p>\n\n\n\n \u201cWhen you cook with turmeric, that could be really safe. But some of the supplements now are 2,000 mg plus, which is a very high dose of turmeric,\u201d she said. Coupled with black pepper, \u201cthe liver now has to break down that supplement and it can\u2019t. It could make it really sick.\u201d<\/p>\n\n\n\n The supplement spectrum includes everything from powders that claim to promote muscle growth to gummies that promise to reduce stress. When it comes to herbal supplements, natural doesn\u2019t necessarily mean better or safer, Halegoua-De Marzio said.<\/p>\n\n\n\n \u201cThat\u2019s what I hear from patients all the time \u2014 \u2018Oh, I want something natural\u2019 \u2014 this fear of prescription medicines being unsafe,\u201d she said, adding that while prescriptions bear their own risks, they\u2019ve gone through rigorous clinical trials.<\/p>\n\n\n\n Supplements aren\u2019t subjected to the same premarket testing.<\/p>\n\n\n\n Among herbal ingredients tied to toxic hepatitis, turmeric is the most commonly consumed in the U.S., according to a study published last year in the journal JAMA Network Open<\/a>. Following that are green tea extract<\/a>, ashwagandha, Garcinia cambogia<\/a>, red yeast rice<\/a> and black cohosh<\/a>.<\/p>\n\n\n\n About 15.6 million Americans take supplements containing at least one of these six botanicals, the study found. Most reported doing so on their own, not under a doctor\u2019s advice.<\/p>\n\n\n\n Prescription medications are tightly regulated and therefore more easily quantified; it\u2019s difficult to determine how many people consume supplements whose ingredients can cause liver damage. A goal of the JAMA Network Open research was to capture this magnitude \u2014 at least where herbal supplements<\/a> are concerned \u2014 said co-author Dr. Robert Fontana, a professor of internal medicine at the University of Michigan Medical School.<\/p>\n\n\n\n \u201cIt\u2019s important for other doctors to know, for the general public to know,\u201d Fontana said. \u201cThe denominator of use is going up.\u201d<\/p>\n\n\n\n Fontana and Halegoua-De Marzio are part of the Drug-Induced Liver Injury Network<\/a>, a research group backed by the National Institute of Diabetes and Digestive and Kidney Diseases<\/a>, part of the National Institutes of Health. More than 1,800 patients have been enrolled since the program\u2019s 2004 inception, with 19% of cases tied to supplements<\/a>.<\/p>\n\n\n\n Previous research<\/a> has estimated that the U.S. sees 44,000 cases of liver damage linked to medications and supplements annually, including 2,700 deaths. The actual incidence is likely higher, Fontana said. Liver failure symptoms can be vague, so some people may be unaware they have the condition. People who sought natural remedies in the form of supplements may be wary of seeing a doctor. Others, Fontana said, may be embarrassed about inadvertently harming themselves; botanical users in his 2024 research were older, wealthier and more educated than nonusers.<\/p>\n\n\n\n \u201cWhen you\u2019re the patient, you\u2019re like, \u2018Why did this happen to me?\u2019\u201d Fontana said. \u201c\u2018What do you mean, this stuff isn\u2019t safe?\u2019\u201d<\/p>\n\n\n\n FDA doesn\u2019t monitor supplement safety before sale<\/strong><\/strong><\/p>\n\n\n\n For Joanne Slavin, a registered dietitian and professor in the department of food science and nutrition at the University of Minnesota, consumer education on the risks and rewards of supplements is critical.<\/p>\n\n\n\n \u201cWe really only know human data when something goes wrong,\u201d she said.<\/p>\n\n\n\n The Food and Drug Administration maintains a searchable database of recalls, market withdrawals and safety alerts<\/a> but can\u2019t vet supplements for safety or effectiveness<\/a> before they hit store shelves. Only once they\u2019re on the market does the agency have the authority to penalize \u201cadulterated or misbranded\u201d products<\/a>. That\u2019s thanks to the Dietary Supplement Health and Education Act of 1994<\/a>, which limited the FDA\u2019s reach. The number of supplements on sale today is almost 20 times as many as three decades ago.<\/p>\n\n\n\n Consuming supplements comes with risks, the FDA warns.<\/p>\n\n\n\n \u201cDietary supplements may contain ingredients that can have strong effects in the body, even if the ingredients are natural or plant-derived,\u201d the agency said in a statement to NBC News. \u201cAdverse events are more likely to occur if consumers take supplements in high doses, take multiple supplements or take supplements instead of or in addition to medications.\u201d<\/p>\n\n\n\n According to the Council for Responsible Nutrition (CRN), dietary supplements can\u2019t make claims concerning the prevention, diagnosis, mitigation or curing of a disease.<\/p>\n\n\n\n \u201cDietary supplements can\u2019t say they can cure your cold, they can\u2019t say they can prevent your Alzheimer\u2019s<\/a> or your cancer,\u201d CRN President and CEO Steve Mister said. \u201cIf you see (such) a product out there, it is blatantly illegal.\u201d<\/p>\n\n\n\n Dietary supplements have their place<\/strong><\/strong><\/p>\n\n\n\n In short, he said, supplements are intended for healthy people who are trying to stay healthy.<\/p>\n\n\n\n While everyone should ideally get all nutrients through a balanced diet, Slavin said, she recognizes that dietary supplements have their place. People who don\u2019t eat red meat, for instance, may need to seek an alternate source of iron.<\/p>\n\n\n\n \u201cA supplement is fine, sure,\u201d she said. \u201cBut that\u2019s on the individual basis rather than the public health basis for the whole world.\u201d<\/p>\n\n\n\n Monitoring how many vitamins or mineral supplements are taken daily is straightforward, Slavin said.<\/p>\n\n\n\n The federal Office of Dietary Supplements<\/a> has established daily upper limits for nutrients, from vitamin A<\/a> to zinc<\/a>, which vary by age and sex. Calcium<\/a>, for example, has an upper limit of 2,000 mg per day for adults 51 and older \u2014 including food, drink and supplements.<\/p>\n\n\n\n Herbal supplements have no such boundaries and aren\u2019t as well studied<\/a>.<\/p>\n\n\n\n \u201cEverything can be toxic at a certain amount,\u201d said Andrea Wong, CRN senior vice president of scientific and regulatory affairs. \u201cIt\u2019s really up to the manufacturers and the researchers who are looking at these ingredients to determine what is the beneficial amount \u2026 then also look at what would be the amount where you start seeing some evidence of toxicity.\u201d<\/p>\n\n\n\n She said it\u2019s important to let your doctor know about any supplements you\u2019re taking or starting. Some supplements may interfere with prescription medications or each other<\/a>, or be unsafe for people with certain medical conditions. For example, the FDA advises against taking any combination of aspirin<\/a>, vitamin E<\/a>, prescription warfarin<\/a> or herbal supplement ginkgo biloba<\/a> \u2014 all are blood thinners and may increase risk of stroke or internal bleeding.<\/p>\n\n\n\n According to Fontana, some people are even genetically susceptible<\/a> to supplement-induced liver damage.<\/p>\n\n\n\n \u201cThat means there\u2019s a biological basis as to why they were the one in 1,000, one in 10,000 people who took this and got into trouble,\u201d Fontana said of supplements. \u201cThe same thing is true for prescription drugs; we\u2019re finding genetic associations.\u201d<\/p>\n\n\n\n