How Alcohol Affects PV
PV is part of a group of rare chronic blood cancers called myeloproliferative neoplasms (MPNs). While strong scientific evidence has linked alcohol consumption to an increased risk for several cancers, MPNs are not among them. Drinking alcohol can, though, worsen PV symptoms and lead to complications in some people.
“Some patients find that alcohol can trigger or worsen headaches, flushing, dizziness, or itching,” says Dr. Gerds. “The impact varies considerably from person to person. Some individuals notice no difference, while others find that even small amounts can aggravate symptoms.”
Alcohol and Blood Clot Risk
This cancer causes your body to make too many red blood cells, so your blood thickens and doesn’t flow properly. This can lead to the formation of blood clots inside your veins or arteries. A clot can then block blood flow, causing a heart attack, stroke, or pulmonary embolism.
Dehydration doesn’t change your number of red blood cells, but it reduces the amount of liquid in your blood, so it becomes more concentrated and thicker.
“While moderate alcohol consumption has not been shown to specifically increase clotting risk in PV, heavy alcohol use can contribute to dehydration and other health issues that may negatively affect overall cardiovascular health,” Gerds says.
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