Lambton Health Unit: Infant Health About this site: Read about the health benefits of breast milk, what mothers should eat when breastfeeding, and when and how to introduce an infant to solid foods at this site from the Lambton Health Unit, a nonprofit health services organization in Canada. (http://www.lambtonhealth.on.ca/infant/benefits.asp) Pluses: Separate sections on the causes and cures for colic, constipation, and diarrhea. Minuses: Information on the best workplaces and restaurants is strictly for residents of Lambton County. Best feature: A sample menu for 4 to 9-month-old infants, listing the kind of foods to eat and suggested daily serving sizes.