What is the legal ruling for someone who broke their fast in Ramadan due to a doctor's advice to avoid a blood clot, kidney failure, or gallstone deposits after a sleeve gastrectomy?

If fasting is harmful to you, according to the testimony of trustworthy doctors, then there is no sin upon you in breaking your fast until you are able to fast. Then you must make up the days you missed after Ramadan, for Allah Almighty says: "And whoever is ill or on a journey - then an equal number of other days."