In this podcast I’m talking to Dr William Grant, regarding the recent study showing that those who supplement vitamin D have much less risk for Alzheimer’s and dementia. He knows more about vitamin D and the effects of sunlight than anyone I know. He’s not a medical doctor but a  PhD - in physics with an entire career at NASA. After retiring from NASA, he formed the non-profit organisation, £Sunlight, Nutrition and Health Research Center” in San Francisco to continue his work on the roles of diet and UVB/ vitamin D in reducing risk of chronic and infectious diseases. He published a review of the role of vitamin D in risk of dementia in 2009 followed by several additional publications on vitamin D and Alzheimer’s disease and dementia. He has 284 publications regarding vitamin D listed at pubmed.gov. You can read more about Alzheimer's and Dementia on my website.