It's not available yet, but it could lay the groundwork for faster diagnoses and, potentially, additional treatments.

Doritos and Cheetos are getting a makeover. PepsiCo said on Thursday that it’s launching toned-down versions of its bright orange snacks that won't have any artificial colors or flavors.

Instead of a heart biopsy, a nuclear imaging test called a technetium Tc 99m pyrophosphate scan can now detect cardiac ATTR amyloidosis.