I suffer from ulcerative colitis , many holistic health experts agree that fermented foods provide the best form of probiotics that can be absorbed easily , and 24 hour yogurt is among the best forms available. This machine had changed my life literally , from being in bed sick for days with horrible symptoms and pain , to being able to eat normally again and enjoying my freedom . I can't say enough good things , and the research is undeniable , EVERYONE should own a yogurt maker . Health is wealth  and you really don't understand that until you don't have it anymore.