I drink Kefir nearly each day. It is soo much better than yoghurt AND healthier. People in the Caucasus frequently reached ages of over 100 years and many claimed it was due to the Kefir they drank. Kefir is considered a right turning bacteria and Yoghurt is a left turning bacteria. Kefir is a colony that goes inside of you and lives. It has 46-56 types probiotic cultures while yoghurt has only 7. Give it a try!