The Immune system protects against diseases. It seeks out and destroys viruses, bacteria, fungi, and cancerous cells before they can damage the body. It learns to tell the difference between "self" tissue and "non-self" particles. If you strengthen the immune system you enhance your protection against those diseases. The thymus, one of the organs of the immune system, is the site where certain immune cells called T lymphocytes or T cells mature. The thymus begins to shrink (atrophy) after adolescence.
The immune system changes throughout life. At birth, specific immunity is not fully developed. However, newborns have some antibodies, which crossed the placenta from the mother during pregnancy. These antibodies protect newborns against infections until their own immune system fully develops. Breastfed newborns also receive antibodies from the mother in the breast milk.
Common Problems:
- Increased infection risk
- Decreased ability to fight diseases
- Slowed wound healing
- Autoimmune disorders
- Cancer
Maintaining good health involves the following:
- Exercise
- A well-balanced diet
- No smoking
- Limited alcohol use -- moderate drinking seems to have some health benefits, but excessive drinking can cause serious damage
- Safety measures to avoid falls and other injuries
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