Why does yogurt have probiotics?

Answer: Beneficial bacteria ferment milk

Beneficial bacteria ferment milk ✓ — Correct! Yogurt is made by adding beneficial bacteria (mainly Lactobacillus bulgaricus and Streptococcus thermophilus) to warm milk. These bacteria ferment lactose (milk sugar) into lactic acid, which thickens milk and gives yogurt its tangy taste. These living cultures are probiotics—good bacteria that can benefit gut health!

Natural fruit sugars grow microbes — Wrong. Probiotics come from bacterial cultures added to milk, not from fruit. Fruit-flavored yogurt is made after fermentation.

Preservatives create probiotics — Wrong. Preservatives kill bacteria, not create them. Probiotics are living bacteria deliberately added to ferment milk into yogurt.