Did You Know!
Despite their diversity and complexity, human cells have a limited lifespan. Most cells in the body undergo a process called apoptosis, or programmed cell death, after a certain period of time or when they become damaged or dysfunctional. However, many tissues in the body are constantly renewing themselves through cell division. For example, the cells lining the gastrointestinal tract are replaced approximately every three to five days, while red blood cells have a lifespan of about 120 days before being replaced. This constant renewal is essential for maintaining the integrity and function of tissues and organs throughout life.
