immune system

The body’s coordinated network of cells, tissues, and molecules that defends against pathogens and maintains internal balance.

Health

Do Tattoos Affect Your Immune System Long-Term?
ByMax Dvornik January 6, 2026February 4, 2026

Do tattoos affect your immune system long-term? Yes, tattoo ink leaves particles in the skin and nearby lymph nodes and…

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Health

How Allergies Happen, and Why They Appear or Vanish
ByPriscilla Li December 15, 2025February 10, 2026

You sneeze at spring, your kid swells up with peanut butter, your friend suddenly cannot take acetaminophen. The through line…

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