In fact, it is wrong to say that the first glass of water in the morning is equivalent to drinking bacteria.Most of the bacteria in our mouth are harmless, so swallowing them with saliva has no impact on our health.
Furthermore, the bacteria from our mouth cannot directly enter the bloodstream after being ingested.
They are blocked by the gastrointestinal tract and most of the microorganisms entering the stomach are killed by stomach acid. Very few bacteria survive this process.
Overall, drinking water with bacteria in the morning is not a concern as the bacteria present in our mouth are mostly harmless, and those that reach our stomach are effectively destroyed.
