Drinking more water will thin the blood to a degree. If you feel there is a real problem, you should head in and get a quick test from your doctor.
If there is a serious issue with the "thickness" of the blood, there are several things your doctor can do for you. One common measure taken is to put the patient on blood thinners. These are administered through close medical supervision. They can be in pill or IV form depending on he seriousness of the problem.
If your blood is too thick, you doctor make recommend blood thinners such as Coumadin or Warfarin.
Vitamin K, primarily.
By eating too much ketchup
No; coumadin thins the blood. Take vitamin K to thicken the blood.
It does not thicken your blood. It cloggs your blood arteries.
It thins the blood.
Thicken with blood
Yes.
No. No reason at all it should.
all green vegetable
vitamin K
fats and sweets
Yes
It does neither. Lettuce contains Vitamin K
When you smoke or do any kind of drug, it will no thicken you blood but it will more so make it thinner.