Curcumin — a substance from the herb turmeric that gives Indian curry its yellow color — improved memory and mood for people with a mild form of age-related memory loss, according to researchers at the University of California Los Angeles. Those taking curcumin had mild improvements in mood, and their brain PET scans, compared with those who took placebos, showed significantly less amyloid and tau signals in regions of the brain that control memory and emotional functions: the amygdala and hypothalamus. {read more here}