A new study led by an Indian-origin researcher which was published in the Journal of Alzheimer's Disease suggested that consuming diet rich in walnuts may lower the risk of dementia and Alzheimer's. According to the study walnuts not only lower the risk of Alzhemier's but also delay the onset of the disease and slows down its progression. For the study the researchers analysed the effects of diet supplemented with six percent and nine percent walnuts on mice. The supplementation is equivalent to one ounce (28.3 gram) and 1.5 ounces (42.5 gram) per day respectively. The results indicated that the mice