You need to provide some data, not hysteria. Yes, solar flares and coronal mass ejections can have effects on the Earth. We see them as aurora and radio interference. Truly exceptional flares can induce significant currents in terrestrial electrical and electronic systems. If it is bad enough, things can fail.

Typical solar flares do NOT cause heart failure.

There are far more common things to worry about, especially since you can't do anything about flares.