Worst case scenario - "A person is at greater risk of having a stroke if they have a moderate or marked increase in their red blood cell count. This is because an increase in the number of red blood cells leads to a thickening of the blood, and this increases the possibility of a blood clot forming".
Depending on your readings - "There are many different treatments for this condition. A very common treatment for this condition is the removal of a unit of blood every so often (could be once a week, once a month, or once every few months depending on the patient)". Other treatments are available, see your doctor for treatment options.
Bro, just wanted to let you know what could occur. Not trying to scare the hell out of you!