The overarching advice for everyone, though, is to discuss with your doctor whether you should take low-dose aspirin before deciding to do so (or deciding to stop). These guidelines note that there are likely to be exceptions, and your physician should be assessing your personal health risks when deciding whether to prescribe daily aspirin. This isn't actually all that new. Though research from the mid-20th century suggested aspirin would help everyone, these changes to official recommendations are based on many years of modern studies (and meta-analyses of those studies), which the ACC/AHA note are far better designed and more rigorous than anything we’ve had before. If your doctor scoffs and tells you baby aspirin is a great idea for everyone of a certain age, their knowledge is out of date.