The symptom specialists are drawing attention to is linked to vitamin D deficiency. While fatigue, low mood, or frequent ...

High sugar intake has been shown to suppress immune function. Candy, pastries, sodas, and other sugary treats can impair the activity of white blood cells, which are critical for fighting infections.

Maintaining a balanced diet has never been more important, doctors say. A few months into the coronavirus pandemic, in July, Dr. Elizabeth Klodas, a preventative cardiologist and the owner of Step One ...

Here’s what sepsis is, what causes it and how it’s treated if it affects you or someone you love.

WASHINGTON (AP) — U.S. health regulators have authorized an extra dose of the Pfizer or Moderna COVID-19 vaccines in people with weakened immune systems to better protect them from the virus. The ...

If you frequently catch a cold or your immune system feels weak, you may wonder if it has any impact on your fertility. The answer is that it may have some impact. This article talks about the ...