Robert felt winded climbing stairs. At 76, he attributed his fatigue to age. He thought his heart medications needed adjusting. His cardiologist agreed, tweaking his blood pressure pills. Six months later, Robert collapsed. In the ER, doctors found his heart walls dangerously thickened, stiff as leather.

A simple nuclear scan revealed the truth: transthyretin amyloid cardiomyopathy, or ATTR-CM, a progressive disease where misfolded proteins infiltrate the heart. Had anyone suspected it …

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Evelyn felt fine that morning. At 68, she was active, healthy, and just returned from her daily walk when her heart began to flutter. It wasn’t painful, just an odd sensation, like a fish flopping in her chest. It lasted around 10 minutes and then stopped. Although she thought it was strange, she soon dismissed it. A week later, she woke up unable to move her right side. A stroke …

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