Ashwagandha is one of those supplements I get asked about constantly. People want to know if it's safe, mostly because they're already taking it for stress or sleep and they've run across a scary headline somewhere. So when a [large clinical study](https://www.msn.com/en-in/health/general/study-finds-ashwagandha-safe-no-liver-kidney-injury-after-24-weeks/ar-AA2dOvmq?ocid=BingNewsVerp) followed people taking daily ashwagandha root extract for a full 24 weeks and found no evidence of liver or kidney injury, I paid attention.

Twenty-four weeks matters. A lot of supplement safety data comes from eight or twelve weeks, which is fine as far as it goes, but plenty of people take ashwagandha for years. Six months of daily use with blood work monitored along the way, liver enzymes and kidney function included, tells us quite a bit more than a short run ever could. The extract was well tolerated too, which is the phrase researchers use when participants generally didn't drop out or complain of troubling side effects.

A little background, because I spent two decades in clinical settings and I can't help myself. Ashwagandha is an adaptogen, an herb used for centuries in Ayurvedic medicine, and it has real research behind it for stress and anxiety. Small randomized trials have shown reductions in cortisol and modest improvements in reported stress levels. I'm not in the camp that dismisses herbal medicine outright, and I'm not in the camp that treats it as automatically harmless because it's natural. Both of those positions are lazy. Herbs are pharmacologically active, that's rather the point of taking them.

Which is exactly why this study is welcome. The liver concern with ashwagandha isn't invented. There have been case reports over the years of liver injury in people taking it, enough that some regulators in Europe have issued cautions. Case reports are important signals but they can't tell you how often something happens, or whether the product involved was contaminated, mislabeled, or dosed wildly. Remember the avocado oil story I wrote about recently, where most products on shelves weren't what the label claimed? Supplement quality is a genuine problem across the board.

So this trial helps weigh the risk more fairly. A large group of people, taking a standardized root extract at a consistent dose, watched closely for half a year, with no signal of liver or kidney harm. That's reassuring. And it fits with the pattern I've seen in the broader literature, that quality-controlled ashwagandha root extract at reasonable doses appears safe for most healthy adults.

Notice the careful words in that last sentence, though. Root extract. Standardized. Most healthy adults. This study doesn't cover people with existing liver disease, or those on medications that stress the liver, or pregnant women, who are generally advised to avoid ashwagandha. If you're on thyroid medication, blood thinners, or sedatives, talk to your doctor or pharmacist first, because ashwagandha can interact with all three.

My son Linton went through a stretch in his twenties where he tried nearly every stress remedy on the market, and I remember telling him the same thing I'll tell you. The supplement is the smallest part of the equation. Sleep, movement, and someone to talk to do the heavy lifting. Ashwagandha might take the edge off, and if you choose to take it, this study suggests your liver and kidneys will likely be fine. Just buy from a brand that third-party tests its products.

When the full paper is available I'll go through it, because I always want to see the actual numbers, the dose used, and who was excluded. But for now, if you've been taking ashwagandha and quietly worrying, you can breathe out a little.