When we look at herbal supplements, we want to know what is actually inside the plant. This study looked at how cadmium, a heavy metal, builds up in Panax notoginseng. The researchers found that cadmium levels in the plant increase significantly with exposure. Specifically, long-term exposure led to a 311.44% increase in cadmium content, while high-concentration exposure caused a 250.33% increase.
At the same time, these changes in the plant's chemistry were linked to a drop in its natural benefits. The study found that several bioactive compounds, like Ginsenoside Re and total flavonoids, decreased as cadmium levels rose. These compounds are what people often look for in this herb.
There is a small piece of hope in the data. A calcium intervention was shown to significantly reduce cadmium accumulation from 356.67% down to 44.22%. However, because there were only a few pieces of evidence for this specific finding, it should be viewed with caution. While this data helps estimate how much cadmium might enter the food supply, it does not provide a direct measure of health risks for people who consume the herb.
