DEAR DR. ROACH: I am 87 and have been jogging/running for 35 years. I recently had a major upper-gastrointestinal bleed after collapsing and losing consciousness. The problem was found and corrected.

Dr. Roach: I am 87 and have been jogging/running for 35 years. I recently had a major upper-gastrointestinal bleed after collapsing and losing consciousness. The problem was found and corrected.

DEAR DR. ROACH: I am 87 and have been jogging/running for 35 years. I recently had a major upper-gastrointestinal bleed after collapsing and losing consciousness. The problem was found and corrected.

Blood pressure consists of two numbers. Systolic pressure, the force exerted on blood vessels when the heart beats, is the upper number. Diastolic pressure, the force exerted when the heart is at rest ...