In many developing nations, environmental toxin exposure can occur via dietary sources. JR Mwanga, from the National Institute for Medical Research (Tanzania), and colleagues report that probiotic-rich yogurt may reduce the uptake of food-based heavy metals and toxins. The researchers enrolled 60 pregnant women and 44 school-aged children, residing in a region of Tanzania known for high environmental pollution, in a study in which the participants consumed a yogurt rich in Lactobacillus rhamnosus, for 19 days. Among the pregnant women, the probiotic-rich yogurt protected from mercury uptake by up to 26% and arsenic by up to 78%. The children showed positive, but not statistically significant results. The study authors urge that: “Probiotic food … represents a nutritious and affordable means for people in some developing countries to counter exposures to toxic metals.”