There are a wide range of benefits for babies who drink breast milk. Babies who breastfeed are less likely to develop:
Asthma
Allergies
Eczema
Upper & lower respiratory diseases
Digestive diseases such as acute diarrhea, long term Crohn’s disease and colitis
Diabetes types 1 and 2
Childhood leukemia
Additionally, babies who drink breast milk are also at reduced risk for sudden infant death syndrome (SIDS) and are less likely to be overweight or obese.
Source: Johns Hopkins Medicine