As presidents live longer, doctors debate whether to test for dementia

Disabled by polio, Franklin Delano Roosevelt, the 32nd president, controlled his public image to deflect attention from his paraplegia. Roosevelt is seen with British Prime Minister Winston Churchill and Soviet leader Joseph Stalin at the Teheran Conference on Dec. 7, 1943.
Disabled by polio, Franklin Delano Roosevelt, the 32nd president, controlled his public image to deflect attention from his paraplegia. Roosevelt is seen with British Prime Minister Winston Churchill and Soviet leader Joseph Stalin at the Teheran Conference on Dec. 7, 1943.