Ask the doctor. My doctor recently advised me to start taking an 81-mg aspirin once a day. I am physically active 62-year-old and have been a vegetarian-mostly vegan-for 35 years. My BMI is less than 24, my HDL is over 70, and my Framingham risk score is 8%. My only problems are systolic blood pressure in the 130s and an occasional episode of arrhythmia. I'd really rather not take aspirin. Am I being foolish in questioning my doctor's advice?