We know TKI's put stress on the heart and cardiovascular system. And we also know CML is no longer a killer like it once was.
This is why it is important to focus on artery health overall and keep in mind that CML is not likely to get us in the end.
https://www.sciencedaily.com/releases/2018/01/180130140242.htm
Vitamin D3 (which converts to vitamin D in the body) is vital for a healthy immune system and heart health. We should all make sure we maintain high normal levels of vitamin D in our blood.
In my own case, I maintain vitamin D blood level between 60-80 ng/ml averaging around 70 ng/ml most of the time. Levels around 20 ng/ml are insufficient for artery and immune health. Best source of vitamin D is the sun. In winter I supplement to make sure my vitamin D level doesn't drop.