Dr. Muzammil Siddiqi, former president of the Islamic Society of North America, states the following: “Life support is a method for the treatment of a patient. If a patient is in a condition where the artificial life support can help improve his/her condition, then it should be used. However, if a group of doctors determine that there was no hope of any improvement in the condition of the patient or if the patient became brain-dead. In that case, if the doctors and the family members agree to take the patient off of the life support, then it can be removed. We should let nature take its own course and allow the person to expire according to their determined time by Allah.
For the Chemotherapy, I don’t see any reason to prohibit it. It cures many patients, so if it is required, then it should be used.”