Approximately 3 days. Research shows that a one-year-old can survive for three to four days without food or water because he or she is still drinking milk and usually does not require much solid food up until their first birthday.
During the first year of life, you’ll notice your baby eats less frequently than before. Your infant’s stomach is about the size of his or her fist, and they’re not very good at telling you they’re hungry.
A one-year-old baby can survive for 3 days without food as he is still drinking milk from their mothers/caregivers. Freshwater is necessary to keep them hydrated and also to prevent them from having to drink contaminated water, which can make the baby sick.
Can a one year old go longer than 3 days without food or water? What happens when you go too long without eating food?
As stated above, a one-year-old can survive for three to four days without food or water. A one-year-old baby does not require food every day as they are still drinking milk from their mothers/caregivers and do not need solid food yet. If the baby goes too long without eating, dehydration will occur and could result in a coma or death.

How much water does a one-year-old need?
A one year old should drink around 387 milliliters of water daily. They should also get plenty of hydration from the food they eat! Water makes up about 60% of a person’s body weight, and it is extremely important to keep hydrated.
How much food does a one-year-old need?
On average, a one year old requires about 8 oz of solid food each day. As the baby grows older, they will be able to eat more and more! A well balanced diet for a one-year-old would include fruits, vegetables, grains and proteins. 8. What is the average weight of a one year old?
A healthy one year old boy should weigh about 22 pounds. While girls are usually slightly lighter than boys at around 19 pounds on average, this can vary by quite a bit! Always consult your pediatrician before making drastic changes to your one-year-old’s diet or giving them any supplements. 9. How much does a one year old eat in a day?
One year olds eat about half of an adult portion per meal! It doesn’t sound like much, but it adds up over the course of the day! Most babies will only eat 1-3 meals per day, so your one year old is likely eating 4-6 times a day.
How much does a month old baby eat in a day?
A one month old baby should be eating about 2 ounces every 3 to 4 hours. It’s quite frequent for parents of newborns to become exhausted from lack of sleep and tending to their little one’s every need, but keeping the baby well fed is extremely important! Monitor your newborn closely for excessive spitting up or vomiting as it may be a sign that they aren’t getting enough food.