Half of the risk for developing dementia and Alzheimer’s is preventable. Only 1 in 100 cases are caused by genes. Most of this risk relates to nutrition and lifestyle factors which we can change. Given that Alzheimer’s is not a reversible condition, the best hope is prevention and targeting those at risk, from age 50 or younger, and encouraging positive diet and lifestyle changes in the areas shown to impact cognitive function. We offer, and are testing the effects of, an e-based educational strategy for supporting those positive diet and lifestyle changes to help deliver a viable model for effective action on Alzheimer’s dementia prevention which could be applied nationally and globally.