[Jenniferlove]

I do have some food advice for people feeling they should support their vein health:

Oats, nuts, Garlic, onions, beets,quercitine,resveratol,berries(super  important they prevent hardening of the veins which could happen as a consequence of broken valves) , horsetail, Astralagus,minerals. Also dead sea salt bathes help me feel better.
I might have missed some things but I tried a lot and it definitely relieves me.

What is the link between poor circulation and NB? And how do you know if you have poor circulation.

I would say poor circulation implies you already have weak veins and blood flow.  The noogleberry is bound to throw you over the edge if you already have this problem.  Add caffeine or smoking and you're creating a deadly concoction.  I would usually have a mocha once a week and every now and then have a couple hits of weed.  Both began making me extremely ill.  Both of those also constrict our veins.  Heat, on the other hand, my body is craving right now.  That, coincidentally, opens up veins and allows better circulation.