Occasional alcohol consumption can harm brain health, especially after 65. Although dementia risk increases with age, lifestyle changes can help prevent it.

Some 2.3 million of U.S. adults older than 65 — more than 4% — have a diagnosis of dementia. But even without a diagnosis, a certain amount of cognitive decline is normal as age sets in.

When we were young, we never believed that we would one day be 70 years of age, much less over 90. It all arrives too quickly. One day we wake up and wonder who the person staring back at us in the ba ...