Nov 3rd 2025
The Hidden Hazard in Green Smoothies
A credible scientist is worried about the high oxalic acid (aka oxalate) content in green drinks and vegetarian diets. Should you be concerned? Maybe. Oxalic acid is found in plant foods. It’s also produced by the body in the course of normal metabolism. Pretty nasty stuff, it’s the most corrosive acid in the body, a pro-oxidant, and it can combine with most minerals and heavy metals to form oxalate crystals. The most well-known of these crystals are kidney stones, but, according to chemist William Shaw, PhD, formerly of the Centers for Disease Control, high levels of oxalate can form crystals just about anywhere in the body, including glands, heart and brain. Like tiny pieces of glass, these crystals cause tissue damage and inflammation and have been implicated in arthritis, fibromyalgia, interstitial cystitis and a painful condition in and around the vagina called vulvodynia. Fortunately the human body is well-equipped to dispose of oxalate. If you’re in go…
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