Why immune system of older individual becomes weak

1.	Why immune system of older individual becomes weak
Answer» This is because after puberty a gland responsible for body\'s immune system called Thymus gland get degenerated. In other words, we call this gland after puberty as vestigial one. However, problems with the immune system can lead to illnesses and infections. Immune responses can be weakened by various external influences. The immune system defends the body from developing potentially harmful diseases and conditions caused by bacterial, parasitic, fungal and viral infections. The immune system also restricts tumors and cancerous growths inside the body they become old and power or capacity becomes low yes

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