If you eat probiotic rich foods such as yoghurts, you run a double risk.
One is the fact that almost all fruit or flavored yogurts contain sugar which is a growth medium for Candida. And, even if you ate only pure organic yogurt, you would have to partake of at least two quarts a day just to get the friendly probiotics you would get from one properly formulated strain of acidophïlus.
The fact is no probiotics can get the job done when it comes to the two steps necessary to secure maximum intestinal health without the help of essential prebiotics. There have been virtually no effective prebiotic forumulations synthesized from a number of foods until recently

In purely scientific terms prebiotics are a category of non-digestible food ingredients that beneficially affect the digestive system by selectively stimulating the growth and/or activity of bacteria in the colon
Typical dietary sources of prebiotics (some of which contain inulin) are soyabeans, Jerusalem artikokes, raw oats, unrefined wheat and unrefined barley.
But the drawbacks here are twofold.
1) You have to eat massive quantities of these foods. (about 10 pounds a day ) to to get the prebiotic support that you need to help balance your system.
2) "prebiotics" from forced commercial processing often carry sugars and preservatives that are a mixed blessing in the short term and may simply be unhealthy in the long run.
Some companies try to milk "inulin" as the active ingredient in prebiotic foods, but inolin is ineffective as an isolated ingredient and only seems to work inside the synergy of the foods themselves and only then when taken in massive quantities.
The Fermena Solution
To date, the Fermena formula, perfected by Smithsonian Laureate Dr Michio Kushi, is the only whole food prebiotic formula designed to perform in perfect concert with the human digestive system every single time
In short probiotics are beneficial bacteria that live in the intestines.
Probiotic foods such as Yogurt, attempt to infuse these beneficial bacteria into our digestive system but very little of these added "good" bacteria in probiotics foods ever reach our colon.
On the other hand. prebiotic foods work as "feed bases" for the good bacteria already sitting dormant in your colon and help to increase their strength and numbers.
Prebiotics promote the growth of probiotics in the body by providing nutrients they need to survive and multiply.
Prebiotics specifically encourage the growth of probiotics in the gut. Without prebiotics, probiotics could not live for too long or do their job efficiently.
And that is where it all begins....