BTW: My calcium score was "0"
Mild is, as the word says, no very serious. Still at your age you should try to prevent it getting worse, so yes lifestyle changes.
I think your doctors advice is good. If after a year, your cholesterol is too high, you could consider taking statines for it.
Plaque rupture chances are not big, so do not worry about that.
The plaque will not disappear however with a healthy lifestyle. It is there and will not go away again. With a healthy lifestyle you can prevent it from getting worse so that it will possibly never have an impact on your health.
Dear all, just to give u an update. I went to another 2 cardiologists and a very well known radiologist (specialising in heart CT) and all confirmed that these are motion artifacts and that it is a false positive result. They also claimed that the doctor who told me that I have soft plaque is entirely wrong, and quote "incapable". I am so happy about this. However, I still have constant chest pain but when I go running for 1h I just feel great. What is this fu...ing chest pain?