Question

how are proteins and fats digested in humans​

Answer 1

By enzymes:

Proteins - protease enzymes break down proteins into amino acid

Fats/lipids- lipase enzymes break down lipids (fats and oils) into fatty acids and glycerol

Answer 2

Hey mate,

Digestion of protein and fats is helped by stomach acid, which is strong Hydrochloric Acid (HCl).

Hope it helps!