Category: Development

Newborn babies are a remarkable 75–80% water, a fact that highlights the profound connection between hydration and early development. This substantial fluid content is critical for numerous physiological processes that support rapid growth. Addressing the question, **at what stage of life is the percentage of fluid in the human body highest?** this authoritative guide explains the changes from infancy to old age.

According to research from the National Institute of Mental Health, the human brain is not fully developed until the mid-to-late 20s, meaning the answer to the question, "Are you fully mature at 21?" is a bit more complex than a simple yes or no. The journey to full maturity encompasses more than just age, involving significant physical, psychological, and social development that continues well into your twenties.

The human skull is a complex structure, and for adults, a 2023 study found that genetics strongly influence its shape, explaining the wide diversity in head contours. For infants, some mild asymmetry is normal, but many wonder, **how to tell if the shape of your skull is normal?** This guide explores the typical variations and potential issues for both children and adults.