Genetic factors, lifestyle choices, medications, income, culture and gender affect human growth and development. The genetic factors allude to the genes that are inherited. Lifestyle choices include diet and work patterns.
Growth hormone determines growth and development, but the release of this hormone is determined by genetic factors. The pituitary gland releases the hormone, and any damage to this gland affects growth and development. Exposure to a toxic environment as a child also affects growth and development.
Diseases and medical conditions affect growth, especially if children are born with medical conditions that affect development. Children born to affluent parents can afford nutritious food, which helps in development.