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Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [ 1 ]
Human adulthood encompasses psychological adult development. Definitions of adulthood are often inconsistent and contradictory; an adolescent may be biologically an adult and display adult behavior but still be treated as a child if they are under the legal age of majority.
Adequate nutrition is essential for the growth of children from infancy right through until adolescence. Some nutrients are specifically required for growth on top of nutrients required for normal body maintenance, in particular calcium and iron metabolism. [163]
Children who are undernourished before age two and gain weight quickly later in childhood and in adolescence are at high risk of chronic diseases related to nutrition. [14] Studies have found a strong association between undernutrition and child mortality. [15] Once malnutrition is treated, adequate growth is an indication of health and ...
Continuous changes, like growth in stature, involve fairly gradual and predictable progress toward adult characteristics. When developmental change is discontinuous, however, researchers may identify not only milestones of development, but related age periods often called stages.
Furthermore, nutrition can affect methylation as the process continues throughout an individual’s adult life. Because of this, nutritional epigeneticists have studied food as a form of molecular exposure. [1] DNA methylation is the addition of a methyl group on a cytosine ring of DNA. [15]
If a child does not fully develop theory of mind within this crucial 5-year period, they can suffer from communication barriers that follow them into adolescence and adulthood. [53] Exposure to more people and the availability of stimuli that encourages social-cognitive growth is a factor that relies heavily on family.
This may be due to the weight bearing the hip and knee joints go through for standing and walking. Walks with adult support, holding onto adult's hand; may begin to walk alone. Walking alone leads to inconsistent steps, grasping objects for balance, and taking few steps without falling.
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