Ashwagandha has a new headline number: a roughly 29% drop in serum cortisol in stressed, anxious adults who also have high blood pressure. A 60-day, double-blind, placebo-controlled Phase III trial of 60 patients also reported big drops in anxiety and perceived stress scores. But the percentages are within-group changes, blood pressure only showed favorable trends, and the authors have ties to the extract's manufacturer. Here is what the study found, what it can't prove, and who should be cautious.
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