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  2. Sickness behavior - Wikipedia

    en.wikipedia.org/wiki/Sickness_behavior

    In the 1980s, the blood-borne factor was shown to be proinflammatory cytokines produced by activated leukocytes in the immune system in response to lipopolysaccharides (a cell wall component of Gram-negative bacteria). These cytokines acted by various humoral and nerve routes upon the hypothalamus and other areas of the brain. Further research ...

  3. Why does the flu make some people sick but not others? - AOL

    www.aol.com/lifestyle/why-does-flu-people-sick...

    Adults 65 years of age and older can have a weaker immune response to flu vaccines, making them more likely to get sick with the flu or get flu complications even when vaccinated, according to the ...

  4. How Worried Should We Be About the HMPV Virus? - AOL

    www.aol.com/lifestyle/worried-hmpv-virus...

    Some bad news: You can't do much beyond toughing it out. "HMPV is typically not treated with medicine to help cure the infection, but over-the-counter medicines can be used to treat the symptoms ...

  5. Inflammation - Wikipedia

    en.wikipedia.org/wiki/Inflammation

    The immune system is often involved with inflammatory disorders, as demonstrated in both allergic reactions and some myopathies, with many immune system disorders resulting in abnormal inflammation. Non-immune diseases with causal origins in inflammatory processes include cancer, atherosclerosis, and ischemic heart disease. [9]

  6. Cytokine storm - Wikipedia

    en.wikipedia.org/wiki/Cytokine_storm

    Nicotinamide (a form of vitamin B 3) is a potent inhibitor of proinflammatory cytokines. [8] [9] Low blood plasma levels of trigonelline (one of the metabolites of vitamin B3) have been suggested for the prognosis of SARS-CoV-2 death (which is thought to be due to the inflammatory phase and cytokine storm).

  7. Always coming back from vacation feeling sick? Here's why ...

    www.aol.com/lifestyle/always-coming-back...

    “Moving from one climate where your body and immune system are used to operating into another, different environment also can challenge your immune system and make it more susceptible to ...

  8. Systemic inflammation - Wikipedia

    en.wikipedia.org/wiki/Systemic_inflammation

    Chronic systemic inflammation (SI) is the result of release of pro-inflammatory cytokines from immune-related cells and the chronic activation of the innate immune system.It can contribute to the development or progression of certain conditions such as cardiovascular disease, cancer, diabetes mellitus, chronic kidney disease, non-alcoholic fatty liver disease, autoimmune and neurodegenerative ...

  9. Influenza A vs. Influenza B: Which Flu Virus Is Worse? - AOL

    www.aol.com/influenza-vs-influenza-b-flu...

    What are the different types of influenza virus? There are four different types of influenza virus: A, B, C, and D. Influenza C usually causes only mild illness while D mostly affects animals ...