I THINK IT’S BECAUSE PEOPLE ARE TAKING A LOT OF IBUPROFEN AND ASPIRIN: A Medical Mystery of the Best Kind: Major Diseases Are in Decline.

Something strange is going on in medicine. Major diseases, like colon cancer, dementia and heart disease, are waning in wealthy countries, and improved diagnosis and treatment cannot fully explain it.

Scientists marvel at this good news, a medical mystery of the best sort and one that is often overlooked as advocacy groups emphasize the toll of diseases and the need for more funds. Still, many are puzzled.

“It is really easy to come up with interesting, compelling explanations,” said Dr. David S. Jones, a Harvard historian of medicine. “The challenge is to figure out which of those interesting and compelling hypotheses might be correct.”

Well, I’m just the idea man here. I’m sure you bright scientist-types can find out if I’m right.