@riteshkundu
Lori always gives such sage counsel.
As a 72 year old woman I would also advocate for sharing this information with your dad. I know, you are protecting him from information that might be stressful, but our bodies eventually alert us to disease in one way or another…increased fatigue, bone pain, night sweats. Those symptoms will trouble him if they emerge or continue and he does not know the reason. Knowing about his health risks allows for adjustment, preparation and the acknowledgement of his autonomy to make medical decisions. If at all possible, I always encourage family to share information with the patient.
As Lori shared, she stands as testament to the wonders of modern medicine. I sincerely hope for a similar outcome for your dad.
Hugs! You are a good daughter.