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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.
While having thinner blood may stave off any alarming blood circulation issues, blood that is too thin may lead to complications as well. With a lack of platelets in the blood to increase viscosity, continual bleeding â where your wounds and cuts have trouble forming blood clots to stop the bleeding â may cause some amount of frustration, and may even end up becoming a dangerous problem.