In light of other news about apostles' health, Church spokesman Eric Hawkins said in a statement:
"President Monson is 87. It’s natural that he and others in Church leadership are feeling the effects of advancing age. However, he spoke publicly at General Conference earlier this month and attended all the meetings. He comes to the office every day, attends all First Presidency and committee meetings, leads the discussion, and makes decisions. The workload of the First Presidency is up to date. President Monson has always been private about his health, but appreciates the prayers and sustaining support of Church members, as do all of the First Presidency and the Twelve."