Ashwagandha is everywhere. From beauty serums to stress supplements to testosterone-boosting pills, the Western wellness industry has declared Withania somnifera the new golden child of adaptogens. And why not? It’s been shown to lower cortisol, improve sleep, reduce inflammation, and even support neurological health.
But here’s the catch: much of the research—and many of the products now saturating the market—aren’t even using the part of the plant Ayurveda has relied on for millennia.
They’re using the leaves
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The Part No One Talks About
Why? Because they’re cheaper. Faster to grow. And they’re rich in withaferin A—a compound that’s easy to isolate and plug into pharmaceutical models. In other words, empirical science loves it because it fits neatly into the reductionist framework: find the “active compound,” extract it, and turn it into something measurable.
But in doing so, we’ve lost the plot.
Ayurveda Uses the Root For a Reason
Ayurveda—the original system that gave us ashwagandha—uses the root. Not the leaf. The root is heavy, grounding, stabilizing—the qualities you want when calming the nervous system or rebuilding vitality after burnout or illness. The leaf? It’s light, sharp, and even cytotoxic in higher doses. It’s traditionally used in topical applications or carefully prepared formulations—not your everyday rasayana.
Cytotoxicity Isn’t TheoreticaL
And that cytotoxicity isn’t theoretical—it’s documented. Research has shown that ashwagandha leaf extract causes selective apoptosis in cancer cells through oxidative stress and DNA damage pathways, sparing normal cells (source). Another study confirmed that withanone-rich leaf extracts can induce cell death via ROS signaling, underscoring their potent (source).
Why That’s a Problem for Everyday Use
But here’s the problem: when taking ashwagandha daily (for stress, energy, sleep, or hormone balance) you’re not trying to kill cells. You’re trying to rebuild. You want stability, nourishment, restoration. Not low-grade cytotoxicity circulating through your system. What’s beneficial in a targeted therapeutic context can be harmful in the wrong body, at the wrong dose, for the wrong purpose.
Another review in Phytotherapy Research confirms that most traditional uses and clinical trials focus on root extracts, not leaf (sources).
When Science Forgets the Source
This happens when empirical knowledge overrides traditional wisdom—when the lab bench becomes more critical than the lineage. It’s not that science is wrong. It’s just incomplete without context.
Too often, it comes with the arrogance of novelty, treating ancient medicine as something to be “validated” by modern tools rather than respected on its terms.
What to Look for Instead
So when you see another supplement touting “clinically studied ashwagandha extract” but doesn’t specify whether it’s root or leaf—know that matters. Deeply.
Because clinical doesn’t always mean complete, and data doesn’t always imply discernment.
What We Lose When We Dismiss Lineage
The wellness industry loves the language of science, but only when it fits the narrative. It will use terms like “clinically studied,” “evidence-based,” and “active compound” while completely ignoring context, lineage, and lived wisdom.
Ashwagandha wasn’t designed to be used in isolation. It belongs to a system. One that considers constitution, season, stage of life, digestive strength, emotional state, and more. You’re not practicing medicine when you extract one compound, dose it in standardized milligrams, and offer it to the masses without discernment. You’re repackaging it for profit.
That’s the problem. This isn’t just a botanical misunderstanding; it’s a philosophical one. Ayurveda teaches us that healing happens through relationships: between practitioner and client, plant and body, and time-tested practice and present-moment need. That requires context and depth.
So no, I’m not impressed by products boasting “12x standardized Withaferin-A” if they don’t tell me whether they used the root or the leaf. That’s not rigor. That’s marketing. And if we’re going to keep using Ayurvedic herbs to fix burnout, anxiety, and disconnection, the least we can do is stop disconnecting them from their roots.
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