Coffee’s benefits could leave a bitter aftertaste

SIR – You report (July 11) that a daily cup of coffee could add months to your life.

Coffee keeps you awake. In the same edition is the headline: “Alzheimer’s link to a poor night’s sleep”. So, drink coffee and get Alzheimer’s?

Paul Eward

Ross-on-wye, Herefordshire

Taking Coffee, a painting from the early-18th century in the Pera Museum, Istanbul