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If there is one main thesis to Topol’s book, it’s that healthy aging is a function of a strong immune system, which can defend against diabetes, cancer, heart disease and other chronic conditions.

Yet they rake in tens of billions of dollars each year by driving up costs for everyone else — especially patients battling cancer, HIV, heart disease, and autoimmune conditions.

Melissa said she would like to see more routine screening for heart disease.

They succeeded in substantially lowering the price of some commonly prescribed drugs for diabetes and heart disease and were going forward with others.

"She has heart disease. Sometimes she suffocates and turns blue. She can't continue living in a tent."