What probiotic can do for stomach?

Stomach irritation is a common problem originating from any pathophysiology and/or stress. Stress is psychological phenomenon, can be relieved from mental respite. However, we need to protect our stomach from pathogenesis of common microorganism, ‘helicobacter pylori’, that may provoke cancer growth, data suggests. ‘Yogurt’ has excellent effects on stomach bed in precluding stomach ulcer. Why don’t we add ‘yogurt’ in our daily meal?