How would increased red blood cell production affect viscosity and what problems this cause for someone with high pressure?

Increased red blood cell production would lead to:

1. Increased blood viscosity: With more red blood cells present in the blood, it becomes thicker and flows less easily.

2. Hyperviscosity: As the viscosity increases, the friction between the red blood cells and the blood vessel walls increases.

3. Higher resistance to blood flow: This increased resistance makes it harder for the heart to pump blood, leading to high blood pressure.

4. Further rise in blood pressure: Hypertension can cause further damage to the blood vessels and organs.

5. Potential complications: In individuals with already high blood pressure, increased red blood cell production and hyperviscosity can exacerbate the condition and increase the risk of complications such as blood clots, stroke, and heart failure.

Therefore, for someone with high blood pressure, increased red blood cell production can have significant and harmful effects on their cardiovascular health.