A–Z Glossary

hypothalamic-pituitary-adrenal axis

The hypothalamic-pituitary-adrenal axis is a hormone system that coordinates the body's response to stress.

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Can emotions shape baby personality

Can emotions shape baby personality

Temperament is not the same as personality When people say a baby has a “personality,” they often mean an early pattern of behavior: easy to soothe, highly alert, shy, intense, calm, or curious. In developmental medicine, this is usually called temperament. Temperament refers to an infant’s typical level of emotional reactivity, self-soothing, attention, activity, and […]

Can fear harm the baby myth

Can fear harm the baby myth

Why the myth feels believable The myth persists because pregnancy makes every emotion feel high-stakes. When you care deeply about the baby, it is natural to scan for cause-and-effect: I got scared, then something must have happened inside me. That mental leap is powerful, but it is not always biologically accurate. In everyday language, people […]

Do thoughts influence pregnancy outcome

Do thoughts influence pregnancy outcome

What the question really means When people ask whether thoughts influence pregnancy outcome, they are often really asking whether fear, sadness, guilt, or hope can directly shape the fetus. The evidence does not support a mystical or instantaneous connection in which every thought is translated into fetal injury or protection. The fetus is not receiving […]

Why baby crying is stressful

Why baby crying is stressful

Crying is an alarm signal, not simply a sound Infant crying is an early communication behavior with high biological priority. Before a baby can use gestures or language reliably, crying can signal hunger, fatigue, discomfort, temperature changes, overstimulation, the need for physical contact, or a possible medical problem. The sound is difficult to ignore because […]