I'm currently wondering about the factors that cause one's nation to display Heart Disease as a leading cause of death. My nation hasn't had to worry about heart disease for a while now and it has just cropped back up within the past few days. It seemed stranger, because my Health, Lifespan, and Public Healthcare are at an all time high, and my obesity rate at an all time low. Why would this disease suddenly be an issue again?

Any help will be apprecited.

I didn't find the right solution from the Internet.

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Thank you.