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The extra red blood cells make your blood thicker than normal. As a result, blood clots can form more easily. These clots can block blood flow through your arteries and veins, which can cause a heart attack or stroke. Thicker blood also doesn't flow as quickly to your body as normal blood.
This causes the blood to become thick and provides an ideal environment in which pathogens can âhideâ and thrive. Additional Information about Thick Blood. Common symptoms of thick blood; Common causes of thick blood; Natural and alternative treatments for thick blood; Dietary and lifestyle recommendations that may help in the treatment of thick blood