Your five-month-old watches you eat. She tracks the fork from plate to mouth, leans toward the table, and opens up when you do. Every parent reads that moment the same way. Is it time?
The first year of feeding has fewer real decision points than the baby aisle suggests. For roughly the first six months, a baby gets breast milk or infant formula and nothing else. Around six months, food joins the milk instead of replacing it. Between six and twelve months the diet widens while milk still does most of the nutritional work. At the first birthday, several doors open at once.
That is the map. What fills it in isn’t a calendar. It’s a short list of signals your baby gives you, plus a shorter list of foods and drinks that wait until twelve months.
This article maps the arc. Breast milk versus formula, the mechanics of first spoonfuls, allergenic foods and supplements each get their own article here.
The first year in four stages
The Centers for Disease Control and Prevention updated its guidance on introducing solid foods in April 2026. Two lines on that page anchor everything else. The Dietary Guidelines for Americans and the American Academy of Pediatrics put the start of other foods at about six months. And starting before four months is not recommended.
Before that point, milk is the meal. CDC’s breastfeeding page, updated in July 2026, says the Dietary Guidelines, the AAP and the World Health Organization all recommend exclusive breastfeeding for about the first six months. The federal pages don’t agree on where breastfeeding should end. Material last reviewed in October 2022 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development puts the AAP position this way: breast milk alone for six months, then a slow introduction of solids while breastfeeding carries on to age one. CDC’s newer page says to keep going to age two or beyond. Six months is the part everyone agrees on, and where a family lands on the far end belongs to that family and its clinician.
From six to twelve months, food is practice and milk is nutrition. A baby working through two spoonfuls of mashed sweet potato is learning to chew, swallow, and sit at a table. The calories still come mostly from breast milk or formula.
At twelve months, cow’s milk becomes an option, honey stops being dangerous, and a child can eat most of what the household eats.
Why six months, and what iron has to do with it
The timing isn’t arbitrary. The reason is iron.
A baby is born carrying iron stored during pregnancy. Those stores cover a full-term infant through the early months. Breast milk contains iron, but not much of it, and by roughly half a year a growing baby needs iron arriving from somewhere else.
CDC’s iron page, updated April 2026, splits the guidance by how a baby is fed. For a baby fed breast milk, the agency says to ask the child’s doctor or nurse whether iron drops are needed before six months, and that iron-rich foods matter after about six months. For a baby on standard iron-fortified formula, CDC says formula can meet iron needs for the first twelve months. Babies born preterm may need more, which is a conversation for the pediatrician.
Why iron earns this much attention: it carries oxygen in red blood cells and supports brain development, and CDC notes that untreated iron deficiency anemia can cause learning difficulties. Around the first birthday, the doctor or nurse will likely screen for anemia.
Now the part that complicates the tidy story. A 2019 systematic review in the American Journal of Clinical Nutrition, produced by the Nutrition Evidence Systematic Review team for the USDA and the Department of Health and Human Services, looked at what the research shows about timing. Obbagy and colleagues graded as moderate the evidence that introducing complementary foods at four months instead of six brings no advantage and no disadvantage for iron status in healthy full-term infants. What the same review graded as strong evidence is a different claim: iron-containing complementary foods such as meat and fortified cereal help maintain iron status in the first year for infants at risk of low iron stores or low intake.
Read that twice. The exact month matters less than whether iron-bearing food shows up once feeding starts.
CDC sorts those foods into two kinds. Heme iron, from animal sources including red meat, poultry, eggs and fatty fish, is absorbed more easily. Non-heme iron, from fortified infant cereals, beans, lentils, tofu and dark leafy greens, is absorbed less easily. CDC notes that pairing non-heme sources with vitamin C foods such as berries, broccoli, tomatoes or sweet potatoes improves absorption, and that a family feeding mostly plant sources has to plan more carefully.
Vitamin D is the other nutrient on a timetable. CDC says babies fed only breast milk, or breast milk plus formula, need a supplement starting shortly after birth, because breast milk usually doesn’t supply enough. The amount belongs to your baby’s clinician and to this library’s article on supplements for children.
The signs that matter more than the date
CDC lists seven readiness signs. They’re easier to use if you sort them into three jobs a baby has to be able to do.
The first is holding still. Can the baby control their head and neck, and sit up alone or with support? A baby who slumps can’t protect their own airway.
The second is wanting it. Does the baby open their mouth when food arrives, bring objects to their mouth, and try to grab small things?
The third is the one parents miss. Can the baby move food from the front of the tongue to the back and swallow it, instead of pushing it back out onto the chin? Newborns have a reflex that shoves things out of the mouth, and it fades with time. Until it does, a spoonful comes straight back at you, and that’s reflex, not a food preference.
A baby can reach six months without reaching all three. Another gets there early. CDC’s FAQ page tells parents to raise any concern about development with the child’s doctor. The person who measured your baby last month can answer this better than any article.
What changes between six and twelve months
There’s no required order. CDC says the AAP doesn’t ask most children to follow a particular sequence. Vegetables before fruit, meat before grain, none of it is a rule.
By seven or eight months, CDC says a baby can eat across food groups: vegetables, fruits, meat and other proteins, unsweetened dairy such as plain yogurt and cheese, and whole grains.
One correction deserves to be made loudly. Rice cereal isn’t the default first food, and CDC asks parents to vary it. Feeding only infant rice cereal can raise a baby’s arsenic exposure, so the agency recommends offering fortified oat, barley and multigrain cereals as well. Plenty of parents still reach for the rice box, because that’s what their own parents used.
A second correction, from CDC’s FAQ page: putting infant cereal in a bottle doesn’t help a baby sleep longer, and it may raise the risk of choking.
Flavor variety and texture variety are two different jobs
Most feeding advice talks about new flavors. Texture is the other half. CDC’s approach is to start with smooth, mashed, pureed or strained food and move toward thicker and lumpier textures as a baby’s eating skills develop. Some coughing, gagging and spitting up is expected along the way. Gagging and choking aren’t the same event, and this library’s article on starting solids covers how to tell them apart.
A 2016 narrative review in Current Obesity Reports asked what predicts whether a child will later accept a reasonable range of food. Harris and Coulthard concluded that breastfeeding and the timely introduction of complementary foods both predict later food acceptance. A narrative review isn’t a trial, so that sits in the preliminary tier rather than the established one. Still, it points where experience points. A baby who has only met smooth puree has had less practice than one who has met a soft lump.
Expect repetition. CDC’s FAQ page says a child may need eight to ten exposures before accepting a new food. A rejected vegetable is information about today, not a verdict about broccoli.
Responsive feeding means watching the baby, not the bowl
CDC’s mealtime page, updated March 2026, states the principle directly. Let your child decide how much to eat. They don’t need to finish the food on the plate or the liquid in the cup.
That’s responsive feeding, and it’s the evidence-aligned approach. The adult decides what gets offered and when. The baby decides whether and how much. CDC describes a general pattern of roughly three meals plus two to three snacks a day for children aged six to twenty-four months, and says daily amounts vary, which is normal. Any worry about how much your particular baby eats goes to your baby’s doctor or nurse, who can see the growth curve you can’t.
The rest of CDC’s mealtime advice is easy to act on. Strap the baby into a high chair and supervise the whole meal. Keep screens out of it, phones included, which lines up with the AAP’s recommendation to avoid screens before eighteen months apart from video calls with family. Expect a meal to run ten or fifteen minutes, or as long as the baby stays interested.
Hunger and fullness look different at two months and at ten
CDC splits the cues by age, and the difference is genuinely useful.
A baby under six months signals hunger by bringing hands toward the mouth, turning toward the breast or bottle, making puckering or lip-smacking motions, and holding the hands in tight fists. Fullness looks like a closed mouth, a head turned away from the breast or bottle, and hands that loosen.
From six months on, the signals get obvious. Reaching or pointing at food. Opening up when a spoon comes. Visible excitement when food appears. On the other side: pushing food away, clamping the mouth shut, turning the head, or using sounds and gestures that clearly mean enough.
The most useful line on that page is the last one. Crying is a late sign of hunger. By the time a baby cries, you’ve missed several quieter signals, and a frantic baby is harder to feed.
This is the honest trade-off. Cue-based feeding can feel like no plan at all, especially at 3am when nothing is predictable. A clock gives an exhausted parent something to hold. The problem is that a clock isn’t the baby’s signal, and a baby fed past fullness gets practice ignoring their own.
The measurement side is less settled than the advice sounds. A 2019 systematic review in Appetite examined 33 instruments built to assess responsive feeding in children from birth to age five. Heller and Mobley reported that only three showed rigorous validation and reliability testing, and that few were designed for children under two or tested with low-income families, Hispanic and Black families, or fathers. Responsive feeding is widely recommended as protective against childhood obesity. The tools used to measure it are still catching up.
What the first birthday changes
Several rules expire at twelve months. A few don’t.
Cow’s milk becomes an option. CDC says whole, unflavored, unsweetened cow’s milk can be introduced at twelve months and shouldn’t be given before. The agency gives three reasons for the wait: it may cause intestinal bleeding in a young infant, it carries more protein and minerals than a baby’s kidneys can handle, and it lacks the nutrient balance a baby needs. Fortified unsweetened dairy alternatives also start at twelve months, and CDC says to read labels for vitamin D and calcium because products differ, and to discuss the choice with the child’s doctor.
Honey is the sharpest line on the list. CDC’s wording leaves no room: “Do not give your child honey before 12 months.” The reason is infant botulism. No honey in food, in water, in formula, or on a pacifier.
Raw and unpasteurized products never become safe for a young child. CDC says plainly not to give a child raw or unpasteurized milk, and extends that to unpasteurized juice, yogurt and cheese.
Added sugars stay out longer than the milk rules suggest. CDC says children under twenty-four months should have none at all, and names flavored yogurts, muffins and cookies as the usual sources. Caffeine has no established safe limit for young children either, so the same age group should skip soft drinks, tea, coffee and sports drinks.
Juice follows a similar path. Skip it for the first twelve months, and CDC adds that there’s no need for it later either. That page cites the American Academy of Pediatrics suggesting no more than four ounces of 100 percent fruit juice a day for ages one to three, which is a population figure and not a target for your child. Fruit drinks with added sugars are a different product, and CDC says to avoid them.
A few fish stay off the table because of mercury, which can harm brain development. CDC’s off-limits list covers shark, swordfish, bigeye tuna, marlin, orange roughy, king mackerel and tilefish from the Gulf of Mexico. Fish somebody caught locally is a separate question, and CDC tells you to check your local advisories. Lower-mercury fish is encouraged once solids begin. High-sodium foods get limited rather than banned, and CDC points at processed meats such as lunch meat, hot dogs and ham.
CDC says these lists aren’t exhaustive and tells parents to ask their child’s doctor. That isn’t boilerplate. It’s the agency telling you the page can’t see your child.
When to call the pediatrician instead of searching online
Most feeding worries are ordinary. A few aren’t, and these are worth knowing by heart at 2am.
Dehydration in a baby moves fast. The National Library of Medicine’s MedlinePlus lists the signs in infants and young children: a dry mouth and tongue, crying without tears, no wet diaper for three hours or more, a high fever, unusual sleepiness, irritability, and eyes that look sunken. MedlinePlus says dehydration can be life-threatening. A baby showing those signs needs to be seen, not watched.
Weight is the other early warning. CDC says some loss in the first week is normal and that babies should be back to birth weight by about day ten to fourteen. Continued weight loss after day five is a warning sign, and so is a baby who isn’t gaining steadily after that. Poor weight gain is a reason to call, not a reason to read more.
Call the same day for a baby who refuses feeds, who is unusually hard to wake, or who seems floppy and listless.
Call 911 for a baby who can’t cough, cry or breathe. Choking is an airway emergency and it doesn’t wait. A baby coughing loudly is still moving air. A baby who is silent and struggling is not.
Five questions worth bringing to the next well-child visit
Write these on your phone before the appointment. Cut the ones that don’t apply.
- Based on how my baby is growing, is anything about our feeding worth changing?
- Does my baby need an iron or vitamin D supplement, and when should that be checked again?
- Below, we cover what my baby does and doesn’t do yet from the readiness list. Where are we?
- What would make you want to hear from me before the next visit?
- Who do I call after hours, and what counts as after hours in your practice?
This library’s article on well-child visits covers what else happens at those appointments and why they cluster so tightly in the first two years.
The habit that does the most work
If you keep one thing from the first year, keep this: feed the baby in front of you, not the baby in the book.
Watch for the quiet hunger cues instead of waiting for crying. Stop when the mouth closes and the head turns, even with food left in the bowl. Offer the rejected food again next week. Let the texture get lumpier before it feels comfortable. Bring the real questions, including the small ones, to the person who weighs your child.
The rest is a short set of lines that either expire at twelve months or never do. Honey, cow’s milk, juice, mercury fish, raw milk, added sugars. Put them on the fridge and stop thinking about them. The judgment calls need a baby, a clinician, and a year of paying attention.
Sources
- Centers for Disease Control and Prevention. “When, What, and How to Introduce Solid Foods.” cdc.gov
- Centers for Disease Control and Prevention. “Foods and Drinks to Avoid or Limit.” cdc.gov
- Centers for Disease Control and Prevention. “Iron (Infant and Toddler Nutrition).” cdc.gov
- Centers for Disease Control and Prevention. “Vitamin D (Infant and Toddler Nutrition).” cdc.gov
- Centers for Disease Control and Prevention. “Tips for Mealtime Routines.” cdc.gov
- Centers for Disease Control and Prevention. “Signs Your Child Is Hungry or Full.” cdc.gov
- Centers for Disease Control and Prevention. “Cow's Milk and Milk Alternatives.” cdc.gov
- Centers for Disease Control and Prevention. “Frequently Asked Questions: Infant and Toddler Nutrition.” cdc.gov
- Centers for Disease Control and Prevention. “Breastfeeding Fast Facts.” cdc.gov
- Centers for Disease Control and Prevention. “Newborn Breastfeeding Basics.” cdc.gov
- Eunice Kennedy Shriver National Institute of Child Health and Human Development. “Breastfeeding and Breast Milk.” nichd.nih.gov
- National Library of Medicine (MedlinePlus). “Dehydration.” medlineplus.gov
- PubMed. “Obbagy JE et al. "Complementary feeding and micronutrient status: a systematic review." American Journal of Clinical Nutrition, 2019. DOI: 10.1093/ajcn/nqy266.” doi.org
- PubMed. “Harris G, Coulthard H. "Early Eating Behaviours and Food Acceptance Revisited: Breastfeeding and Introduction of Complementary Foods as Predictive of Food Acceptance." Current Obesity Reports, 2016. DOI: 10.1007/s13679-016-0202-2.” doi.org
- PubMed. “Heller RL, Mobley AR. "Instruments assessing parental responsive feeding in children ages birth to 5 years: A systematic review." Appetite, 2019. DOI: 10.1016/j.appet.2019.03.006.” doi.org