The article presents a selection of research discoveries in medicine and dentistry from 2006 to 2008. A hand-held light-based therapy was effective in eradicating periodontally pathogenic bacteria. Substances found in the pulp of black raspberries seemed to restrain the development and progression of certain types of cancers. Curcumin, a component of yellow turmeric, was determined as a possible agent for preventing Alzheimer's disease.