What is the immune system?

The immune system protects the body from bacteria, viruses, parasites, allergens, and cancerous cells. Without the immune system, your body will be vulnerable to diseases. The most important component of the immune system is the white blood cells that are spread out across the body to detect and eliminate infections.

Chronological age vs. Biological age: How old are you really?

Have you ever wondered why people of the same age have very different appearances? No one want to look older than they really are, but what’s the connection between body appearance and age?

As humans, we have two different ages: chronological age (real age) and biological age (body age). Chronological age is the number of years a person has lived, while biological age refers to how old a person seems.