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Quercetin Lowers Your Risk for Viral Illnesses

Analysis by Dr. Joseph Mercola Fact Checked

quercetin health benefits

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  • Quercetin packs a powerful antiviral punch, inhibiting several strains of influenza, hepatitis B and C and other viruses
  • It also combats inflammation and has been shown to lower blood pressure in those with Stage 1 high blood pressure and may help regress tumors
  • Quercetin reduces your risk of cold or flu and boosts mental performance following extreme physical stress, which might otherwise undermine your immune function and render you more susceptible to infections
  • Quercetin stabilizes mast cells, has cytoprotective activity in the gastrointestinal tract, and has a direct regulatory effect on the basic functional properties of immune cells
  • In supplement form, quercetin has been used to ameliorate obesity, Type 2 diabetes, circulatory dysfunction, chronic inflammation, hay fever and mood disorders

Your immune system is your first-line defense against bacterial and viral infections, so the most effective way to prevent infectious illness is maintaining robust immune function. Your diet and other lifestyle factors are foundational for this, but certain supplements can also be helpful.

One such supplement is quercetin, an antioxidant flavonol found naturally in apples, plums, red grapes, green tea, elder flower and onions, just to name a few.


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