1.   Israeli researchers have discovered that a substance in the tart berry helps prevent plaque.

2.   Now two groups of investigators have shown that in animals at least, they can use gene therapy to prevent plaque from growing back.

3.   Shaped like normal toothbrushes, they have one set of bristles that rotate in a circle, which massages gums and prevents plaque.

4.   Should they go after beta amyloid and try to prevent plaques outside cells?

5.   Treatments triggered an immune response in the animals that seemed to clear away the telltale brain plaques, while preventing new plaque from being deposited.

6.   How do I prevent plaque from recurring?