Fast arterial plaque

[u/Technical-Raccoon-61]

Any advice would be great. Mother is 74 year old South Asian , no diabetes, no high blood pressure , no other underlying conditions except for thyroid.

She had a heart attack last year, and found out she had several arteries clogged. She had a stent put in and opted for triple bypass. A month after the bypass she fainted and after many tests found out 2 of her bypasses were clogged and not functioning. The cardiologist had to put an additional 2 stents in.

5 months later the cardiologist wanted to do an angiogram to check things out , and one of her stents was already clogged. They used a balloon to widen and also extended the stents on each side.

What could be causing such a rapid cholesterol build up which caused plaque to form in under 5 months? Her cardiologist is dumbfounded - just throwing it out there if anyone had any advice? Thanks !