How to shop for greens powders
“Given that the ingredients can vary widely, it’s important to determine what you’re looking for in a powder before choosing one,” Talbert says. If you’re not sure which specific ingredients would be most beneficial for you, talk to your primary care doctor or a registered dietitian, but here are a few useful guidelines:
Since greens powders are classified as supplements and not regulated in the US (meaning, their claims aren’t evaluated by the FDA), the experts we spoke to suggested choosing a reputable brand and looking for third-party testing that ensures the product is safe and actually contains the ingredients the brand claims are inside. (Note: We’ve reached out to all brands on this list to confirm they’ve undergone third-party testing.)
For example, AG1 is NSF Certified for Sport, one of the most rigorous independent quality and safety certification programs in the supplement industry, says Tess Marshall, ND, a licensed naturopathic physician and the director of product marketing and education at Athletic Greens. It’s a standard sought by many professional athletes, coaches, and trainers—and validates that AG1 is free from over 280 substances banned in professional sports organizations.
Another big consideration: Greens powders can contain heavy metals, so it’s very important to make sure the one you’re taking has been tested and has low levels, says Dr. Sharp, who suggests looking for a mention of cadmium and lead levels, specifically. “High levels of lead can accumulate in the bone, and excessive amounts may lead to impaired mental functioning, high blood pressure, and anemia,” Talbert adds.
Dr. Sharp also advises checking the ingredients label and avoiding greens powders that are artificially sweetened: “I recommend stevia and monk fruit over sucralose, aspartame, and acesulfame potassium.”
Finally, since most brands recommend adding a scoop of the powder to a glass of water (or your smoothie) and drinking it first thing in the morning, you’re going to want to try ones that match your taste preferences.
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