No, that's not how evolution works. Most medical conditions are somatic, i.e. not inheritable. Of the chronic health conditions that have a hereditary component like coronary conditions, certain forms of high cholesterol resistant to diet management and others, many of them will only manifest after the patient already has progeny, so no evolutionary pressure to weed them out.
Not making a judgement here, but..
What about those who struggle to procreate, without IVF, or, those infants who only survive due to advanced medical intervention? "in nature" such individuals wouldn't not get to pass on their genes, but, now they did.
I hasten to add, I am not advocating we stop such interventions, but, they may be having the famous "unintended consequences".
I would add, do we REALLY know how evolution works?