medications perhaps, other insights into possibly treating it or even preventing it in the future. that's one of the real keys here. the second thing is exactly as you mentioned. a lot of this is -- you know, about one in five people roughly every year who have mild cognitive impairment are going to go on to develop alzheimer's disease. if you do the math, over four, five years, it is about half the people who have mild cognitive impairment. planning ahead is certainly part of that. >> scary statistics. a lot of people won are wondering is there anything i can do to help delay the symptom. >> that's interesting. sometimes hard to quantify the impacts of things like this. you know, for example, if you take a look at simple changes you do in your lifestyle, brain food, people heard this term before. there are certain foods that actually really do seem to make a difference in terms of prevention. antioxidant-type foods. tumeric, a spice. in south asian countries, the rate of alzheimer's disease much lower than other countries.