The hydrochloric acid in our stomachs does not break down food. It is part of the body's non-specific first line of defence. It is hydrochloric acid and while it does us no harm, it is strong ...

It is part of the body’s non-specific first line of defence. Stomach acid is hydrochloric acid and, while it does us no harm, it is strong enough to kill any pathogens that have been caught in ...