Heart Screening, Healthy Aging in Retirement: Q&A #2637

Full analysis

Dr. Philip Snider returns to the Retirement and IRA Show to answer listener questions about coronary artery calcium (CAC) scoring, walk through the five cardiovascular screening tests he previously recommended, and cover which dietary patterns and supplements have the strongest evidence behind them. One listener reports his CAC score came back at 525 — startling given his otherwise excellent health — while a retired ER physician raises a legitimate counterpoint about the risks of over-testing asymptomatic people.

What was covered

• Listener George's CAC result: A 67-year-old man with a BMI of 20.5, no medications, no chronic disease, and two hours of daily walking got a coronary artery calcium score of 525. Dr. Snider explained why that number is alarming and how it is prompting a treatment plan with his physician.
• CAC scoring explained: Scores run from zero (no calcified plaque) through 1–99 (mild), 100–299 (moderate, LDL target drops to 70), and 300+ (severe, LDL target drops to 55, low-dose aspirin considered). The test costs $50–$150 at an imaging center, requires no doctor's order, and is often half-price in February for heart month.
• The five recommended tests: CAC (CT scan at an imaging center); C-reactive protein, interleukin-6, and myeloperoxidase (all blood markers of inflammation and oxidative stress); and lipoprotein-associated phospholipase A2 (Lp-PLA2, a marker of unstable plaque). The blood tests can be ordered online and done at LabCorp without a physician referral; the CAC scan cannot.
• The retired ER physician's counterargument: A listener identified as a former emergency physician argued that testing asymptomatic people carries its own risks — a high score can cascade into cardiac catheterization and stenting, each of which carries complications — and that older evidence on stenting did not show it prevented death in non-acute patients.
• Dietary patterns and longevity: Dr. Snider cited large studies showing the Mediterranean diet, the DASH diet (Dietary Approaches to Stop Hypertension), and plant-based diets can add 1.5 to 3 years of life expectancy, including in people with genetic risk for shorter lives, and are linked to cognitive clarity and mental-health benefits. Ultra-processed foods were highlighted as driving higher inflammation markers.
• Supplements — what the evidence actually supports: Creatine monohydrate (3–5 grams daily) has decades of sports-medicine data for preserving muscle mass and strength in both men and women; vitamin D matters for bone health when blood levels are below 30; CoQ10 is sometimes used for statin-related muscle aches; magnesium glycinate has data for sleep onset; beta-carotene in high doses was shown in a 1990s trial to increase lung cancer risk in smokers. Vitamin E at high doses raises bleeding risk, especially combined with aspirin or blood thinners.

Notable claims & predictions

• Dr. Philip Snider: "You don't need a doctor's order for [the CAC scan]. You just walk into the imaging center and say, I'd like to get a coronary artery calcium score. It's $50 to $150. It's half price in February, usually for heart month."
• Dr. Snider, on the retired ER physician's concern about stenting: "We don't just go looking for stuff always to treat it if it's not symptomatic… it would be highly unusual for somebody to go to a catheterization, especially if somebody didn't have chest pain already." His framing: a high CAC score starts a conversation about lifestyle and medication, not a fast track to a procedure.
• Dr. Snider, on ultra-processed foods: "We found that in the '90s, tobacco companies decided we're going to buy food companies and make food ultra addictive, just like we've done with cigarettes… a lot of people believe this is one of the biggest reasons why we've seen obesity rates go up so much."
• Dr. Snider, on vitamin D: "If [your level] is below 30, definitely correct it. At 30 or above, that's where the evidence supports." He noted a large trial found no effect on all-cause mortality but a small, not-yet-confirmed signal for reduced cancer mortality.
• Dr. Snider, on creatine and kidney labs: If you take creatine, your creatinine level on a standard metabolic panel will rise — not because your kidneys are failing, but because the supplement raises it artificially. Ask your doctor to order a cystatin C test instead to get an accurate read on kidney function.
• Dr. Snider, on annual physicals: "The evidence doesn't support [going] to get a full physical exam every year" for someone who is completely asymptomatic. Blood pressure, blood sugar, and cholesterol checks still matter; the full head-to-toe exam less so.

Fact check

"Mediterranean, DASH, and plant-based diets have been shown in large studies to add 1.5 to 3 years of life expectancy." Plausible directionally — there is substantial observational research linking these dietary patterns to longer life — but the precision of "1.5 to 3 years" depends heavily on the specific studies chosen, how adherence was measured, and what the comparison group ate. Dr. Snider did not name the studies. Observational diet research cannot establish causation, and people who follow these diets often have other healthy behaviors that account for some of the difference. Verdict: supported in general direction, but the specific year-range figure is unverified and likely cherry-picked from favorable studies.

"Beta-carotene in high doses caused increased lung cancer risk in smokers — there was a big trial in the 90s called the CARET trial." Dr. Snider called it "the carrot trial." The actual trial is the CARET trial (Beta-Carotene and Retinol Efficacy Trial), and his core claim is accurate: it found high-dose beta-carotene supplementation increased lung cancer incidence and mortality in smokers. The name misspoken, but the underlying finding is correct.

On the retired ER physician's claim that stenting did not prevent death in non-acute patients in "studies done years ago." This is a fair summary of findings from trials such as COURAGE and ORBITA, which found that elective stenting of stable coronary artery disease did not reduce heart attacks or mortality compared with optimal medical therapy. Dr. Snider's response — that stents are used for symptomatic events, not routine high CAC scores — is consistent with current cardiology practice. The retired physician's characterization of the older evidence is essentially accurate; Dr. Snider's rebuttal is also consistent with standard practice.

"Vitamin E can increase bleeding risk, especially combined with aspirin, ginkgo, or ginseng." This is an accepted clinical concern, particularly at high supplemental doses (400 IU or more). The signal for increased hemorrhagic stroke in particular is real. Claim is accurate.

On CoQ10 and newer blood thinners (Eliquis and similar): Dr. Snider said there is "no evidence" of an interaction between CoQ10 and newer anticoagulants (direct oral anticoagulants, or DOACs). This is broadly true — DOACs are far less susceptible to supplement interactions than warfarin — but some pharmacological caution still exists. The claim is reasonable but slightly overstated; patients on any anticoagulant should still flag supplements with their prescriber.

Why this matters for you

• The CAC scan is cheap, fast, and you don't need a referral. At $50–$150 (often $75 in February), it is one of the few tests that can reveal serious cardiovascular disease silently building in an otherwise healthy person. If you are in your 50s or 60s, have no symptoms but have family history of heart disease, or simply