Can viscous blood ( thick blood) affect the brain function or/and cause anxiety and depression?

What is the way to correct or improve blood viscosity

Answers:
I only have some observational experience, but my child has to get blood draws periodically to test med levels in her system. If she drinks pleny of water before the blood draw, they usually have no difficulty drawing blood and it just comes pouring out of her veins. A few times we had gone in early in the morning before she had anything to drink (and thus had nothing to drink all night) and the blood was thick and very slow to pour into the tube.

I do believe viscosity can affect mental health. One of the functions of my dd's seizure meds is to thin the blood.

If the blood is having difficulty supplying the small vessels of the brain or other vessels in the body, then it certainly can affect the amount of oxygen and nutrients these parts of the cells receive. I have something called osteonecrosis of the hip. Basically, the bone is dying because the blood flow is cutoff. This could certainly happen to the brain.

You might find interest in the story of Randal McCloy (the lone surviving Sago coal miner) apropos.
http://tinyurl.com/k34e2

Also consider new evidence found in autistic children.notorious anxiety sufferers.
http://tinyurl.com/jyw7x

Although it does refer specifically to clotting as opposed to viscosity.

You might also do a lookup on fibrinogen as a marker for heart attacks, stroke, and other conditions. Again, fibrinogen is regarding addressing clotting rather than viscosity, but still something worth learning about in regards to brain function.

What you may also look into is reducing homocysteine. Something like TMG was very helpful for reducing my child's anxiety. Took about a week and a half for it to begin working. Drugs like ibuprofen increase homocysteine. Coffee increases homocysteine.

And be good to your kidneys if you want less anxiety.

This is a profound misunderstanding of human physiology. You can do nothing to alter the viscosity of your blood. So-called "blood thinners" do not alter the viscosity, they alter the tendency of blood cells to "clump".
If one were to lose significant volumne of blood, some of the liquid volumne can be made up through the injection of added fluids such as normal saline sterile solution or blood plasma (or, if it's properlyh typed and cross-matched, replaced with whole blood from a donor). In this extreme case, then yes, one's blood will be temporarily thinned by the volumne of replacement fluid (with the exeption of whole blood transfusion). In that case, one will have quite a lot to make them anxious. Ordinarily, however, the first part of the answer applies: you cannot alter your blood viscosity - nor do you need to. Anxiety and depression are not caused, worsened or improved by blood viscosity.
Take an aspirin. But, better go see a doctor. What in world would make you think that you have "thick blood"? You could have polycythemia
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