Myth #7 Yoghurt from the store is a good source of probiotic microbes
Fresh yogurt that you make yourself and eat fresh can be a good source of probiotic microbes. But when the lactose runs out, the microbial numbers drop rapidly.
In addition, post fermentation treatment/processing of commercial yogurt can dramatically reduce numbers. A store-bought yogurt may be delicious and nutritious, but it is unlikely to have high enough numbers of probiotic microbes to produce a probiotic effect.