Once your child turns 12 months old, pasteurized whole cow’s milk is the recommended drink. It provides the fat, calcium, and vitamin D that toddlers need during a period of rapid brain and bone growth. The Dietary Guidelines for Americans recommend 1⅔ to 2 cup equivalents of dairy per day for children aged 12 through 23 months.
Why Whole Milk, Not Low-Fat
Children between 1 and 2 years old should only drink whole milk, not reduced-fat, low-fat, or skim varieties. The reason is straightforward: the fat in whole milk supports your child’s developing brain. Toddlers need a higher proportion of calories from fat than older children or adults, and whole milk delivers that in a familiar, easy-to-serve form. Most whole cow’s milk sold in the U.S. is also fortified with vitamin D, which helps the body absorb calcium for growing bones.
After age 2, low-fat or skim milk becomes an option, particularly if a child is overweight. But before that birthday, stick with whole.
How Much Milk Per Day
The daily target is 1⅔ to 2 cups of dairy, which includes milk, cheese, and yogurt. In practice, most pediatricians suggest keeping milk intake to around 16 ounces (2 cups) per day and not going much higher. Drinking too much milk can fill your toddler up and crowd out iron-rich foods like meat, beans, and fortified cereals. Over time, excessive milk intake is linked to iron deficiency anemia in toddlers because cow’s milk is low in iron and can interfere with iron absorption.
Fortified Soy Milk as an Alternative
If your child can’t have cow’s milk or your family avoids dairy, fortified soy beverages are the one plant-based option the CDC recognizes alongside cow’s milk as a good source of both vitamin D and calcium for children 12 months and older. Look for versions that are unsweetened, unflavored, and fortified with calcium and vitamin D. Pea-protein-based milks that are similarly fortified and unflavored are sometimes grouped into this category as well, provided your child is growing normally and getting enough iron and zinc from food.
Why Most Plant Milks Fall Short
Almond milk, oat milk, rice milk, coconut milk, and other grain or nut-based drinks are not nutritionally equivalent to cow’s milk, even when fortified. They tend to be significantly lower in protein and fat, two things a 1-year-old’s body demands in steady supply. International health guidelines are consistent on this point: these drinks are not considered adequate alternatives to cow’s milk for children under 2.
Rice and grain-based milks get an especially cautious review. New Zealand’s Ministry of Health, for example, advises against using them as a sole milk substitute for children up to age 5. Canada’s joint health statement goes further, saying that soy, rice, almond, and other plant-based milks, whether fortified or not, are not appropriate as a child’s main milk source before age 2.
If you do use a plant-based drink alongside other foods, choose one that’s enriched with calcium, free of added sugars, and treat it as a supplement to the diet rather than a replacement for cow’s milk or soy milk.
Goat Milk
Goat milk is nutritionally similar to cow’s milk in many respects. It’s a good source of protein, short and medium chain fatty acids, and several minerals and vitamins. Research comparing goat milk formula to cow milk formula in infants found no differences in growth or nutritional status between the two groups. Historically, goat milk was flagged for being low in folate (a B vitamin critical for cell growth), but commercially available goat milk is now typically supplemented with folic acid, which addresses that gap. If you’re considering goat milk, make sure it’s pasteurized and fortified.
Always Pasteurized, Never Raw
Raw (unpasteurized) milk is unsafe for toddlers regardless of the animal it comes from. Children under 5 are at particularly high risk for serious illness from pathogens that raw milk can carry, including Salmonella, E. coli, Listeria, and Campylobacter. Symptoms range from diarrhea, cramping, and vomiting to rare but severe complications like kidney failure or a neurological condition called Guillain-Barré syndrome. Pasteurization eliminates these risks without reducing the milk’s nutritional value.
Transitioning From Formula or Breast Milk
You don’t need to make the switch overnight. A practical approach from Children’s Hospital of Philadelphia suggests starting with about an ounce of whole milk in a sippy cup once a day around 11 months, just to let your baby get used to the taste and the cup. Once your child turns 1, you can begin replacing formula or breast milk feeds with whole milk more steadily.
If your toddler resists the taste, try mixing equal parts whole milk with breast milk or prepared formula. Over the course of a week or two, gradually shift the ratio until you’re offering straight whole milk. Don’t mix powdered formula directly with whole milk instead of water, as that changes the concentration of nutrients.
Signs of a Milk Allergy
Cow’s milk protein allergy affects a small percentage of young children and can show up in two different patterns. Immediate reactions, appearing within minutes to a couple of hours, include hives, swelling, vomiting, wheezing, or a dry cough. These are hard to miss.
Delayed reactions are subtler and can take hours or days to develop. They include persistent eczema, chronic diarrhea, blood in the stool, constipation, frequent spit-up or reflux, and poor weight gain or food refusal. Iron deficiency anemia that doesn’t respond to dietary changes can also be a sign. If you notice any of these patterns after introducing cow’s milk, your pediatrician can help sort out whether a milk allergy is the cause and guide you toward an appropriate alternative like a fortified soy beverage or specialized formula.