- Fish oil (omega-3 supplements): Popular for heart health, yet some large studies, including data from the UK Biobank, have linked regular use in healthy people to a slightly higher risk of atrial fibrillation (an irregular heartbeat) and stroke. Benefits may appear in those with existing heart conditions, but the picture is mixed for primary prevention.
- Certain pain relievers (NSAIDs like ibuprofen): These over-the-counter pills can cause fluid retention and affect kidney function, making it harder for the heart to work efficiently over time.
- Herbal options like garlic or red yeast rice: These can interact with blood pressure or cholesterol medications, sometimes leading to unexpected blood pressure drops or muscle issues.
The key takeaway? Supplements that seem “natural” or “heart-friendly” aren’t always risk-free for aging hearts.
What the Research Shows (Without the Hype)
Multiple studies provide context. A meta-analysis of trials indicated that calcium supplements were associated with about a 15% higher relative risk of cardiovascular events in some groups of postmenopausal women. Research published in medical journals has also examined how excess supplemental calcium might affect artery health.
For fish oil, findings vary. While prescription forms are sometimes used under medical supervision for specific conditions, over-the-counter versions have shown inconsistent results for preventing first-time heart events in healthy seniors. Some trials even noted potential increases in atrial fibrillation risk.
These aren’t blanket statements — individual factors like existing conditions, other medications, kidney function, and overall diet play huge roles. That’s why broad population studies often show mixed outcomes.
Signs Your Heart Might Be Asking for Attention
