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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.
Naturopath Connect. Thick blood (also known as hypercoagulability, Antiphospholipids, and Hughes Syndrome) is a condition where the blood is more viscous (thicker and stickier) than normal.The unusual increase in the thickness of blood is due to an abnormality in the clotting process.he thickened blood hinders the circulation of oxygen, nutrients, and hormones and prevents them from being transferred successfully to tissues and cells throughout the body. This may result in widespread nutritional and hormonal deficiencies as well as Hypoxia, a condition in which cells have a low level of oxygen.