Doctors recently studied the connection with caffeine, coffee, and migranes

Dear Doctors: I am 69 years old and have two cups of coffee each morning.

Once or twice a week, I wake up with a dull ache at the back of my head, toward the left side. It always goes away with my first cup of coffee. Is this caffeine withdrawal? My doctors have found no physical causes.

Dear Reader: Caffeine is a fascinating compound. For people who consume it regularly, its absence can trigger a h…