Why Do Babies Cry So Much?
Crying is the only language a newborn has to communicate with their surroundings. Before speech develops—a process that extends well beyond the first few years, as we explain in our article on the importance of language from birth—crying acts as a biological alarm signal. It triggers an immediate physiological reaction in adults: increased heart rate, muscle tension, and activation of brain areas linked to empathy. This is no coincidence. Evolution has selected this mechanism precisely to ensure the infant's survival.
On average, a healthy baby cries between one and three hours a day during their first weeks of life. This number may seem high, but it is completely normal according to data from the French National Authority for Health (HAS). Crying generally peaks around six weeks of age, then gradually decreases from the second or third month.
The Main Causes of Crying in Infants
Identifying the cause of a cry is a gradual learning process. Parents gradually develop a refined understanding of their child's signals. Here are the most frequently documented causes.
Hunger
This is the most common cause, especially in the first few weeks. A breastfed baby may want to feed every two to three hours. Early signs—bringing hands to mouth, turning the head sideways, making sucking movements—often appear before the crying itself. Learning to recognize these early signs helps to anticipate and reduce the intensity of crying.
Physical Discomfort
A soiled diaper, an uncomfortable position, tight clothing, ambient temperature that is too high or too low: physical discomfort is a frequent cause of crying. A baby cannot adjust their environment alone—they are entirely dependent on adults for this.
Fatigue and Overstimulation
Contrary to popular belief, a very tired baby cries more, and falling asleep then becomes more difficult. Signs of fatigue—averting gaze, rubbing eyes, slowing movements—precede crying. Excessive sensory stimulation (noise, bright light, too many successive interactions) can also lead to an overwhelmed state, resulting in intense crying.
Need for Contact and Security
Developmental neuroscience confirms what clinical observation has long shown: physical contact with a familiar adult is a primary need for infants, just like food. John Bowlby, attachment theorist, demonstrated as early as the 1960s that bodily proximity regulates a baby's nervous system. Carrying your child, rocking them, talking to them gently are valid and appropriate responses to this need—not habits to avoid.
Infant Colic
Colic typically manifests as intense crying, often occurring in the late afternoon or evening, difficult to soothe, in an otherwise healthy baby. It is estimated to affect between 10 and 40% of infants according to studies, and generally disappears before three to four months. Its exact cause remains debated in the scientific community: digestive immaturity, intestinal hypersensitivity, or environmental factors are suggested. No treatment has shown systematic efficacy to date; however, supporting parents during this period is essential.
How to Respond to Crying: Professional Recommendations
The question of responding to crying is subject to many misconceptions. Responding quickly to an infant's cries does not make them capricious—this idea is now refuted by developmental psychology research. On the contrary, parental responsiveness builds the child's emotional security and ultimately fosters their autonomy.
The Rule of Successive Checks
When faced with a crying baby, a systematic approach helps to ensure nothing is overlooked: check for hunger, diaper, temperature, apparent signs of physical discomfort, then offer contact, movement, or a calmer environment. This methodical approach reduces parents' feelings of helplessness.
Babywearing
Babywearing in a wrap or ergonomic carrier is recognized as an effective way to reduce the duration of crying. A study published in the journal Pediatrics as early as 1986, and since confirmed, showed that infants who are carried more cry significantly less. Babywearing simultaneously meets the need for contact, movement, and body warmth.
Creating an Adapted Sensory Environment
White noise (continuous sound such as a fan or rain sound) mimics the intrauterine sound environment and can calm some babies. Partial darkness, reduced visual and auditory stimuli, or conversely a soft and familiar voice are simple tools to experiment with. Each child reacts differently: patient observation remains the best guide.
Taking Care of Yourself When Faced with Repeated Crying
Hearing your child cry without being able to soothe them is a trying experience. Accumulated fatigue—a topic we address in detail in our article on parental sleep—amplifies the distress felt and can generate feelings of guilt or incompetence. These feelings are normal and shared by the vast majority of parents.
If you feel overwhelmed, safely placing the baby in their crib for a few minutes to take a breath is a responsible decision, not abandonment. Asking a loved one for help, contacting a midwife or doctor, calling 15 (emergency services) if you have doubts about the child's health: these steps are part of healthy parenting. The parental mental load is real, and recognizing it is the first step to managing it better.
When to Consult a Healthcare Professional?
Most infant crying is normal and does not indicate a pathology. However, certain signs should prompt immediate consultation with a doctor or pediatrician, without delay:
— The crying is unusually high-pitched or different from the child's usual behavior.
— The baby has a fever (temperature above 38 °C in an infant under three months—call 15 immediately), significant vomiting, a change in general condition, or refuses to eat.
— The crying has lasted for several hours without any respite and resists all usual soothing attempts.
— The child's abdomen appears distended or painful to the touch.
— You observe signs of dehydration: sunken fontanelle, absence of tears, dry diapers for several hours.
Aside from these warning signs, do not hesitate to contact your general practitioner, pediatrician, or private midwife for any concerns. Healthcare professionals are trained to address these questions without judgment. The Ameli.fr website of the French health insurance also offers reliable practical sheets on infant development.
An Intense, But Limited Period of Time
The first few weeks with a newborn involve a total immersion in a world of signals to decode. Crying is the most demanding component of this. But this period, however intense, is transitional. Gradually, parents learn their child's language, and the child learns other modes of expression. The relationship built during these moments of mutual response and adjustment is precisely what establishes the emotional security upon which the child will rely to grow.
To support calm awake times between crying spells, the Treelys activity mat offers a sensory discovery space adapted to the first few weeks, designed to stimulate without overstimulating.
