Question: Are there any unexpected elements in the periodic table which are helpful in preventing clotting?

Rachel Dakin answered on 12 Nov 2013:

Blood clotting can be both good and bad.
It’s good when we cut ourselves either externally or internally. If the blood didn’t clot a simple cut could cause major problems with blood loss. That’s why the disease haemophilia is so serious.
Clotting is bad when it occurs inside a blood vessel. The clot can become dislodged in the vessel and travel to the heart or brain causing a heart attack or stroke. There are many reasons a blood clot can form, it is often because the blood vessel is damaged on the inside which turns on clotting factors. The damage may also be where fat has built up in the artery again turning on clotting factors. Smoking and being overweight both increase the chances of a blood clot forming.
I know that calcium and vitamin K arevolved in blood clotting – though that’s in activating it.
I don’t know of any elements that can help prevent clotting but if you do then let me know!
Our bodies do rely on elements for many other processes – including zinc and copper. It’s possible no-one has investigated the clotting properties of a lot of the elements – particularly those that are naturally in gaseous state, that would be a tricky experiment.