[kokopuffs]

Certain bacteria reside in the GI tract and are responsible for absorption of certain vitamins. Those bacteria are called NORMAL FLORA and are obviously essential to good health.

Penicillin destroys normal flora. Following ingestion of penicillin it is recommended that the patient eat a cup of yogurt that has "active cultures" to help restore that "flora".

 

[kokopuffs]

Or, DaveB, the infant's immune system has been taxed (over challenged) due to vaccinations in early age. Over the past 50 years and for the first time in human history humans have been affecting their own immune system. The data garnered from such activity is young. We need more time to study the short and long term effects of immune stimulation.

 

[kokopuffs]

I think that after some time, algae can develop in bottled water - especially if it's been exposed to sunlight.