Yes， infants need to be supplemented with Vitamin D even if they are getting sunlight exposure. Sunlight is a natural source of Vitamin D， but it is often inadequate for infants because they require more than what can be obtained through natural sunlight exposure alone.
Infants who are breastfed are at a higher risk of developing Vitamin D deficiency because breast milk has only low levels of the nutrient. Infants that are formula-fed have Vitamin D added to the formula but may still need additional supplements due to inadequate Vitamin D absorption.
Vitamin D is crucial for the development of bones， teeth， and overall health. It helps the body absorb calcium and phosphorus， which are necessary for strong and healthy bones. Without Vitamin D， bones can become brittle and weak， leading to a higher risk of breaks and fractures.
Studies show that the lack of Vitamin D in infancy can cause rickets， a rare disease in which bones become soft and bend. Infants who experience Vitamin D deficiency are at higher risk for abnormal development and growth， muscle weakness， and an increased possibility for infections.
Therefore， it is important to give infants Vitamin D supplements recommended by a healthcare provider， even if they are getting sunlight exposure. The dose and duration of supplementation will depend on your baby’s individual needs and medical history.
