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Summary
On episode 418 of 40+ Fitness, Coach Allan sits down with Dr. Jignesh Shah, a board-certified cardiologist and trained epidemiologist who trained at Harvard Medical School and has practiced in several countries. They discuss his book, Heart Health: A Guide to the Tests and Treatments You Really Need.
Jignesh argues that a normal test doesn’t guarantee you’re in the clear, and an abnormal one doesn’t mean disaster is coming. Before agreeing to any test or procedure, he says, you should ask whether it will help you live longer or live better, because those are the only two things medicine can actually offer.
The conversation walks through when to get a second opinion, what a stress test and a cardiac catheterization actually involve, how to read wearable device alerts like possible atrial fibrillation, and where the “220 minus your age” max heart rate formula really came from.
Links
- https://jshahmd.com
Key Takeaways
- A normal test doesn’t guarantee you’re fine, and an abnormal one doesn’t mean doom. Medical testing has real limits in both directions: a clean result can still miss a developing problem, and an abnormal result still leaves time to gather more information rather than react immediately.
- Before agreeing to any procedure, ask whether it will help you live longer or live better. Shah says those are the only two outcomes medicine can offer a patient, so if a recommended test or procedure can’t clearly deliver one of those, especially with no symptoms present, it’s worth questioning.
- Get a second opinion whenever you have time, which is almost always outside the emergency room. A scheduled stress test or elective procedure gives you room to slow down and confirm the plan; only an active emergency, like a heart attack in progress, removes that option.
- Unnecessary pre-surgical stress tests can send you down a path you didn’t need to take. The American College of Cardiology says roughly 90 to 95 percent of surgeries don’t require a stress test beforehand, and an unneeded one can trigger cascading procedures, illustrated by a patient in the book who waited nearly a year for an unrelated knee surgery after complications from an unnecessary stress test and catheterization.
- A stress test measures how the heart performs under increased demand. Ideally the patient walks on a treadmill wired to an EKG, sometimes with radioactive dye added at peak exertion, to reveal whether blocked arteries are keeping the heart muscle from getting enough oxygen.
- Cardiac catheterization is the more invasive next step used to map blockages precisely. Doctors thread a catheter through an artery, typically at the groin or arm, into the heart and inject dye to see exactly where blockages sit, which then guides decisions about medication, stents, or bypass.
- Wearables can flag real problems, especially atrial fibrillation, but shouldn’t be the only signal you trust. If a smartwatch’s EKG or heart-rate readings line up with actual symptoms, or flag possible atrial fibrillation, which raises stroke risk, get checked; but your own sense of how your body is performing compared to normal remains one of the best diagnostic tools you have.
- The “220 minus your age” max heart rate formula was never meant for the general population. It came from a small, quick analysis of about 10 papers on post-surgery cardiac patients, used to answer a conference question, and was only ever intended as rough guidance for that narrow group before fitness culture turned it into a hard rule.
- Dr. Jignesh Shah’s three strategies to get and stay well: prioritize home care over health care through regular exercise, quitting smoking, and eating a healthy diet; get a good handle on blood pressure and, if applicable, blood sugar; and practice optimism, mindfulness, and gratitude, which research links to living five to ten years longer.
“As a doctor, there are only two things that we can do for you. We can either prolong your life or make the quality of your life better.”
Dr. Jignesh Shah
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