Reaching The Age of Adolescence Notes

• Hormones are required not only for human beings but are essential for life cycle of other organisms also.
• Different organisms go through different stages of growth starting from the egg to the adult stage.
• Example: Frogs go through three distinct stages, i.e., egg, tadpole (larva) and adult.
• This transformation of the larva into an adult through sequential changes is called metamorphosis.
• Metamorphosis in insects is controlled by insect hormones.
• In a frog, it is controlled by thyroxine, the hormone produced by thyroid.
• Thyroxine production requires the presence of iodine in water.

• The state of physical, mental and social well being of an individual is known as an individual’s health. Health is maintained by three main things: nutrition, hygiene, exercise and good habits.

Nutritional Needs of the Adolescents: