WASHINGTON : Too bad Ronald Reagan never developed a taste for curry. It might have saved him from Alzheimer's disease. As the former President's death focuses attention on the degenerative brain condition that devastates memory, recent studies have shown that diets rich in curcumin, a compound found in the common Indian curry spice turmeric ( haldi ) can help prevent Alzheimer's. In fact, American researchers reckon the high incidence of turmeric use is one reason why the disease is rare in India . Studies have noted that the elderly living in Indian villages appear to have the lowest incidence of...