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Thick blood may also be caused by the presence of harmful pathogens such as fungi, viruses, bacteria, and parasites. These pathogens can actually activate a coagulation response in the body as a way to avoid being attacked by the bodyâs immune system.
Lifestyle factors such as smoking can also contribute to the formation of thick blood, and this change in blood viscosity can lead to an increased risk of dangerous clots. Thick blood is often easily identifiable with a blood coagulation test and, there are now home options available in order to test how thick or thin the blood is. In turn, the use of home kits to test blood thickness can also be essential to determining how to prevent blood clots.