Each human is an individual. These individuals join together to form families. Families form villages, towns and cities with their own schools, factories, roads, power plants and landfills. On a larger level, the cities and towns form states and the global community, with its own rules and challenges.

Similarly, one can think that cells form tissues, organs, bodies and individuals with their own qualities, joys and sorrows.

Cells are the basic building blocks of all living things.

The original cell you were built of was a fertilized ovum (egg cell). Cells can differentiate from similar stem cells and form cells of different tissues and organs.

We waste cells continuously. Tens of millions of cells are lost every day in the form of dandruff and dead skin cells. Similarly, during one male ejaculation, 200 million sperm cells are lost. Baby girls are born with 1-2 million follicles (immature eggs) in their ovaries, though most often only a few of these cells are fertilized during their life span.

Although a large number of cells are destroyed, more cells are also generated at every moment. The younger the child, the faster their cells are formed. For example, think about the rate at which bone fractures heal. A fractured collarbone of a newborn infant heals in a few days. A similar injury takes a few weeks to heal for a child in elementary school. For a person in secondary school, the healing process can take six weeks. For the elderly, the injury can take several months to heal.