You might be interested to read this post from a man who had a heart attack and emergency bypass surgery at a young age. In spite of religiously following a lowFAT diet, and taking the statin drugs, his cholesterol, triglycerides and blood pressure continued to rise, and he gained weight in spite of the diet. So, he decided to do Atkins, and he did it strictly, no cheating .. and he ate lots and lots of FAT! In 4 months, he lost 30 lbs, cholesterol down over 30% and off all drugs

You can read his posts here. He explains very well how lowcarbing will help, and why eating low FAT is fallacy. He also happens to be my brother

I think your Mom will find it very reassuring.

Doreen