Milkshakes are not recommended for infants under 12 months old due to several concerns. They often contain added sugars, artificial sweeteners, and high-fat ingredients, which can upset an infant’s delicate digestive system and offer little nutritional value. Additionally, milkshakes may contain allergens like chocolate or nuts, which could trigger allergic reactions in babies. The thick consistency can also pose a choking hazard, as infants may struggle to swallow such liquids safely. Furthermore, babies should rely on breast milk or infant formula for essential nutrients. It’s best to consult with a healthcare provider before introducing any new food or drink to an infant’s diet.