Could it be the oatmeal?

For over three years after his coronary bypass, Cliff took one 40-mg Lipitor tablet a day. His cholesterol numbers were great.
Three months ago his quarterly blood work showed that his cholesterol was too low. He was told to cut his tablets in half, so for three months he's take 20 mg daily.
This morning he received a call about his latest blood work. His cholesterol is still too low, and since you can hardly cut a pill into quarters, we got a new prescription. He'll now be taking only 10 mg of Lipitor daily.
I've been making sure we have oatmeal for breakfast at least four times a week lately; I wonder if that's what suddenly made his cholesterol take a nose-dive.
He and I are happy that he's putting less medicine in his body, and our budget is happy too; Lipitor isn't cheap!
We'll see how things look ninety days from now. Wouldn't it be great if he could totally stop taking Lipitor?