The first year of life is a period of rapid growth and development. Regular well-child visits help monitor growth, development, feeding, safety, and overall health while providing recommended vaccinations and screening.

Routine Well-Child Visits
 

After the initial newborn evaluation, routine well-child visits are generally recommended at:

• 3–5 days after birth

• 1 month

• 2 months

• 4 months

• 6 months

• 9 months

• 12 months
   

Additional visits may be necessary for feeding difficulties, poor weight gain, jaundice, developmental concerns, illness, or other problems. Vaccination begins during infancy and protects against several potentially severe infections.
 

Feeding
 

Breastfeeding

Breastfeeding provides optimal nutrition and essential antibodies that build a baby's immune system, significantly lowering the risk of ear infections, respiratory illnesses, and sudden infant death syndrome (SIDS). In the long term, breastfed infants experience lower rates of asthma, obesity, and type 2 diabetes due to the milk's dynamic composition, which naturally changes to meet the growing baby's exact needs. For mothers, the process stimulates the release of oxytocin, a hormone that promotes emotional bonding, reduces stress, and helps the uterus contract to its pre-pregnancy size faster. Furthermore, nursing provides critical long-term health advantages for the mother by lowering her lifetime risk of developing breast cancer, ovarian cancer, and high blood pressure.
 

Exclusive breastfeeding is recommended for approximately the first 6 months when possible, with continued breastfeeding until at least 12 months alongside complementary foods thereafter.
 

Most breastfed infants should receive 400 IU of vitamin D daily, beginning during the first few days of life. 
 

Breast milk generally contains relatively little iron. Healthy full-term infants usually have adequate iron stores for the first several months of life. Exclusively or predominantly breastfed infants should take 1 mg/kg/day of oral elemental iron drops starting at 4 months until iron-containing solid foods (like iron-fortified cereals or pureed meats) are regularly eaten.

Formula
 

Commercial infant formula is an appropriate alternative to breast milk and is formulated to provide the nutrients infants need.
 

Iron-fortified formula is generally recommended.

Formula should be prepared exactly according to package instructions. Adding too much or too little water can cause serious electrolyte or nutritional problems.

Do not give infants homemade formula.
 

Infants younger than approximately 6 months generally should not be given plain water. Giving excessive water to a young infant can reduce breast milk or formula intake, interfere with adequate nutrition, and cause dangerously low blood sodium (water intoxication/hyponatremia), which can lead to lethargy, vomiting, seizures, or other serious complications

Never dilute infant formula with extra water beyond the manufacturer's preparation instructions.
 

Beginning around 6 months, when complementary foods are introduced, small amounts of plain water can be offered, preferably in an open or training cup. Breast milk or infant formula should remain the infant's primary source of nutrition and fluids through the first year.
 

During hot weather, infants younger than 6 months generally do not need additional plain water. Instead, offer breast milk or formula more frequently.
 

Cow's milk should not replace breast milk or formula as the primary beverage before 12 months of age. Juice is generally unnecessary during the first year.
 

Introducing Solid Foods
 

Complementary foods are generally introduced at approximately 4-6 months of age when the infant demonstrates developmental readiness.
 

Signs of readiness include:

• Good head and neck control

• Ability to sit with support

• Bringing objects toward the mouth

• Interest in food

• Ability to swallow food rather than consistently pushing it out with the tongue
   

Introduce a variety of nutrient-dense foods, including iron-rich foods.
 

Common allergenic foods such as peanut and cooked egg should not routinely be delayed once an infant is developmentally ready for complementary foods. Infants with severe eczema or known food allergy may require individualized guidance before peanut introduction.
 

Avoid During Infancy:
 

• Honey before 12 months because of the risk of infant botulism

• Cow's milk to drink

• Unpasteurized milk or foods

• Foods that present significant choking hazards

• Excessive juice

Small amounts of cow's milk used as an ingredient in foods are different from using cow's milk as the infant's primary drink.

How often should my baby feed?

For formula-fed infants, a commonly used estimate after the first several days is roughly 2½ oz of formula per pound of body weight per day (about 150 mL/kg/day), divided among feeds. This is a rough guide.

For breastfed infants, usually 8–12 feeds per day in the newborn period—and monitoring swallowing, satisfaction after feeds, wet diapers, weight gain, and growth is more useful than trying to prescribe an exact volume.

Infant Reflux
 

Gastroesophageal reflux (GER) occurs when stomach contents flow backward into the esophagus and sometimes come out of the baby's mouth as spit-up. Reflux is extremely common in healthy infants because the muscular valve between the esophagus and stomach is still developing.
 

Reflux commonly:
 

• Begins during the first weeks of life

• Peaks around 3–4 months of age

• Gradually improves as the baby grows, sits upright, and begins eating solid foods

• Resolves in most infants by approximately 12–18 months

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GERD/gastroesophageal reflux disease = reflux that causes troublesome symptoms or complications. GERD may be suspected when reflux is associated with problems such as:
 

• Poor weight gain or weight loss

• Persistent feeding refusal or significant feeding difficulty

• Apparent pain or marked distress associated with feeding

• Blood in vomit or evidence of irritation/inflammation of the esophagus

• Persistent symptoms that interfere with feeding, growth, or normal functioning

• Pronounced arching of back with abnormal twisting of head or neck (Sandifer syndrome)

Symptoms such as crying, fussiness, back arching, coughing, gagging, or frequent spit-up can occur with GERD, but none of these symptoms alone proves that GERD is the cause.

Other possibilities include:
 

• Normal infant behavior: Young babies commonly cry, grunt, arch, hiccup, and spit up even when healthy.

• Overfeeding or feeding too quickly: A stomach that becomes overly full can increase spit-up, discomfort, coughing, or gagging.

• Swallowing air: This can cause burping, abdominal discomfort, and fussiness during or after feeds.

• Fast milk flow or feeding difficulties: A strong breastmilk letdown, fast-flow nipple, or difficulty coordinating sucking, swallowing, and breathing can cause coughing, choking, or gagging during feeds.

• Cow's-milk protein allergy: Can sometimes resemble GERD and may cause vomiting, feeding discomfort, diarrhea, mucus or blood in the stool, or eczema.

• Infant colic: Can cause prolonged crying and apparent abdominal discomfort despite an otherwise healthy infant.

• Constipation or gas: May cause straining, crying, drawing up the legs, or arching.

• Illness or infection: Ear infections, urinary infections, respiratory illnesses, and other illnesses can cause unexplained irritability or feeding changes.

• Anatomic or gastrointestinal disorders: Persistent or unusual vomiting can occasionally result from conditions such as pyloric stenosis or intestinal obstruction.

Several measures can help reduce reflux and feeding-related symptoms:
 

• Avoid overfeeding. Feeding more than the stomach can comfortably hold can increase reflux. 

• Feed at an appropriate pace. For bottle-fed babies, use an appropriate nipple flow and allow pauses during feeding. 

• Burp during and after feeds when needed. 

• Keep the baby upright after feeding. Holding the baby upright while awake and supervised for approximately 20–30 minutes after feeding may reduce regurgitation in some infants.

• Avoid tight diapers/clothing around the abdomen and vigorous activity immediately after a large feeding.

• Consider feeding problems or cow's-milk protein allergy (CMPA) if symptoms are significant. CMPA may cause blood/mucus in stool, vomiting, diarhhea, and rash. If CMPA is suspected or diagnosed, extensively hydrolyzed formula (eHF) is usually  the first choice for many infants. 
   

Growth
 

Growth is monitored using standardized growth charts that evaluate:
 

• Weight

• Length

• Head circumference

• Weight-for-length

A single percentile does not usually determine whether growth is healthy. Some healthy infants naturally fall near the upper or lower ends of the growth chart. The pattern over time is particularly important. Crossing multiple major percentile lines, poor weight gain, unusually rapid weight gain, or abnormal head growth may require further evaluation.

Development
 

Around 2 months many infants begin to:
 

• Smile responsively

• Look at faces

• Make sounds other than crying

• Hold their head up briefly while on their stomach

• Follow movement with their eyes

Around 4 months many infants:
 

• Smile to gain attention

• Chuckle

• Make cooing sounds

• Hold their head steady

• Bring their hands to their mouth

• Push up on their forearms during tummy time

Around 6 months many infants:
 

• Recognize familiar people

• Laugh

• Take turns making sounds

• Reach for desired objects

• Roll from tummy to back

• Lean on their hands while sitting

Around 9 months many infants:
 

• Respond to their name

• Show different facial expressions

• Babble repeatedly

• Look for dropped or hidden objects

• Sit without support

• Transfer objects between their hands

Around 12 months many infants:
 

• Wave or use other gestures

• Understand simple words such as "no"

• Say "mama," "dada," or another special name

• Put objects into containers

• Pull themselves to stand

• Cruise while holding furniture

Children develop at different rates. Loss of previously acquired developmental skills is not considered normal and should be evaluated promptly.

Formal developmental screening is also performed at recommended ages during early childhood.

Tummy Time
 

Supervised tummy time while the infant is awake helps strengthen the neck, shoulders, and upper body and supports motor development.

Tummy time can begin shortly after coming home from the hospital. Start with short sessions and gradually increase the amount as tolerated.

Tummy time is for awake, supervised infants only.

Sleep
 

How Much Sleep Is Normal?
 

• Newborns (0–3 months): typically about 14–17 hours during a 24-hour period, although there is substantial normal variation.

• Infants (4–12 months): generally about 12–16 hours per 24 hours, including naps.

• Newborns commonly sleep for only 1–3 hours at a time before waking to feed.

• Longer stretches of nighttime sleep usually develop gradually over the first several months.

• Brief awakenings during the night are normal throughout infancy.
   

To reduce the risk of sleep-related infant death:
 

• Place the infant on their back for every sleep

• Use a firm, flat sleep surface

• Keep pillows, blankets, bumper pads, stuffed animals, and other soft objects out of the sleep area

• Use a crib, bassinet, portable crib, or other approved infant sleep surface

• Avoid overheating

• Keep the infant's sleep area in the parents' room but on a separate sleep surface, ideally for at least the first 6 months

• Avoid smoke and nicotine exposure

• Do not swaddle once the infant shows signs of trying to roll  

Once an infant can independently roll from back to stomach and stomach to back, parents do not need to repeatedly reposition the infant during sleep, but the infant should still initially be placed on the back.
 

​Should I Wake My Newborn to Feed?
 

During the first weeks of life, some newborns need to be awakened for feedings.

This is particularly important if the baby:
 

• Has not yet regained birth weight

• Was born prematurely

• Has jaundice

• Is having difficulty gaining weight

• Is not feeding effectively

• Has been specifically instructed to follow a feeding schedule
   

Car Seat Safety
 

Infants should ride in a rear-facing car safety seat installed according to the manufacturer's instructions.
 

Children should remain rear-facing until they reach the maximum rear-facing height or weight permitted by their particular car seat, rather than automatically turning forward-facing at a specific birthday.
 

The safest location is generally the back seat.
 

Never place a rear-facing car seat in front of an active passenger airbag.
 

Fever in Young Infants
 

Fever can be particularly serious in very young infants.

A rectal temperature of 100.4°F (38.0°C) or higher in an infant younger than 3 months requires prompt medical evaluation, even if the infant otherwise appears well.

Rectal temperature is generally the most accurate method for assessing fever in young infants. Do not give a young infant fever-reducing medication simply to avoid evaluation of a significant fever.
 

Jaundice
 

Jaundice causes yellow discoloration of the skin and eyes because of elevated bilirubin. Mild jaundice is common during the newborn period, but excessive bilirubin can become dangerous.
 

Seek medical evaluation for:
 

• Jaundice appearing during the first 24 hours after birth

• Rapidly worsening jaundice

• Significant sleepiness or difficulty feeding

• Jaundice spreading or becoming increasingly intense

• Persistent jaundice

• Other concerning symptoms

Bilirubin levels may need to be measured to determine whether treatment is necessary.

Umbilical Cord Care
 

Keep the umbilical stump clean and dry and allow it to fall off naturally. Do not pull the cord off. The American Academy of Pediatrics recommends giving newborns sponge baths until the umbilical cord stump falls off, which usually takes one to three weeks.

Seek medical attention for signs of infection such as:
 

• Redness spreading onto the surrounding abdominal skin

• Swelling

• Pus or foul-smelling drainage

• Persistent bleeding

• Fever or an infant who appears ill

Skin Care

Diaper Rash
 

Frequent diaper changes and gentle cleansing help prevent diaper dermatitis.
 

A protective barrier ointment containing zinc oxide can protect irritated skin while maintaining breathability.

A bright red rash involving the skin folds with surrounding small red spots may suggest Candida (yeast) diaper dermatitis and may require antifungal treatment.

Circumcision

To care for a baby's circumcision, gently clean the penis with warm water at every diaper change. Apply a generous layer of petroleum jelly (like Vaseline) to the area or the front of the diaper to stop it from sticking, fasten diapers loosely, and give sponge baths until fully healed (about 1-2 weeks). 

Sunlight

Infants should be protected from excessive ultraviolet (UV) exposure because their skin is particularly sensitive.
 

For infants younger than 6 months, they should not wear sunscreen due to increased absorption. the preferred protection is to:
 

• Keep the infant out of direct sunlight whenever possible

• Use shade from a stroller canopy, umbrella, or other covering

• Dress the infant in lightweight clothing that covers the arms and legs

• Use a brimmed hat that shades the face and neck

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For infants 6 months and older, sunscreen may be applied. Apply broad-spectrum, water-resistant SPF 30 or higher sunscreen to exposed skin. Apply it before going outdoors and reapply approximately every 2 hours and after swimming or excessive sweating, according to the product instructions.

Other skin conditions
 

Newborn skin commonly develops harmless conditions such as peeling, milia, neonatal acne, and transient newborn rashes.

Peeing & Pooping
 

Urine and stool patterns change considerably during the first year of life. There is a wide range of normal, especially for bowel movements.

Wet Diapers
 

• A newborn should usually urinate within the first 24 hours after birth.

• A useful rule during the first several days is approximately one wet diaper for each day of life:

  • Day 1: at least 1 wet diaper

  • Day 2: at least 2

  • Day 3: at least 3

  • Day 4: at least 4

• By about day 5, most adequately hydrated newborns have 6 or more wet diapers per day.

After the first week

• Most young infants continue to have about 6 or more wet diapers per day, although frequency can vary.

• Urine should generally be pale yellow.

• A small amount of pink/orange, brick-dust appearing material in the diaper during the first few days may be urate crystals. This can be normal early on, but persistent urate crystals or decreased urination may indicate inadequate fluid intake or dehydration.

Bowel Movements
 

First stools – Meconium

• A newborn's first bowel movements are called meconium.

• Meconium is thick, sticky, and dark green to nearly black.

• Most newborns pass their first meconium within 24 hours after birth. Failure to pass meconium within the first 48 hours requires medical evaluation.

Transitional stools

• Over the next several days, stools usually change from black/green meconium to greenish or brownish transitional stools and eventually to the baby's typical stool.

Breastfed infants

• Stools are commonly yellow, loose, seedy, or grainy.

• Young breastfed infants may poop several times per day, sometimes after nearly every feeding.

• After about 4–6 weeks, some exclusively breastfed babies may go several days between bowel movements. This can be normal if the stool remains soft and the baby is feeding and growing normally.

Formula-fed infants

• Stools are often tan, yellow, brown, or green and tend to be thicker or more formed than breastfed stools.

• Stool frequency varies; some babies poop multiple times per day while others may go a day or longer between stools.

Straining Does Not Always Mean Constipation
 

Young infants commonly grunt, strain, turn red, or pull their legs up before passing a soft bowel movement. This can occur because they are still learning to coordinate increasing abdominal pressure while relaxing the pelvic floor. This is sometimes called infant dyschezia and is not constipation when the stool itself is soft.

Constipation is primarily about hard or difficult-to-pass stools—not simply how often a baby poops.

Unusual Stool Colors
 

Many stool colors—including yellow, brown, green, and sometimes dark green—can be normal.

Contact your healthcare provider for:
 

• Persistent white, pale, gray, or clay-colored stools

• Red, bloody stools

• Black, tarry stools after the first week

Diarrhea
 

Normal infant stool—especially breastfed stool—can be naturally loose. Diarrhea is more concerning when stools suddenly become much more frequent or watery than the baby's usual pattern.

Infants can become dehydrated quickly. Seek medical advice for significant diarrhea, particularly when accompanied by decreased wet diapers, poor feeding, repeated vomiting, blood in the stool, unusual sleepiness, or other signs of illness.
 

Important Safety Measures
 

As mobility increases, the risk of accidental injury increases rapidly.
 

Parents and caregivers should:
 

• Never leave an infant unattended on a bed, couch, changing table, or other elevated surface

• Keep medications, chemicals, batteries, magnets, and small objects out of reach

• Secure furniture and televisions that could tip over

• Install appropriate stair gates

• Cover or secure electrical hazards

• Keep hot liquids away from infants

• Set the household water heater to a safe temperature

• Closely supervise infants around all water

• Never leave an infant unattended in a bathtub, even briefly

• Avoid smoke and secondhand smoke exposure

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