Medical treatment

Woman going for breast augmentation

Q: Does Islam allow a woman to do breast augmentation? I have been through a couple of articles on the internet which says you can, however it depends on your reason for wanting to increase the breast size.

My reason: I am really flat chested, my breasts never grew at all, not even after having two kids. I am married so I'm not doing this to beautify myself for other men, I just really feel uncomfortable and embarrassed and just want to increase my breast size a little so that it can look "normal". 

Replacing heart valves with valves made from pig tissue

Q: One of my relatives is suffering from heart valve disease and doctors have advised valve replacement surgery . But they have not cleared which type of valve will be used. As per my knowledge valves are of two types

1. Mechanical valve

2. Biological valves which are made from pig tissue

Is it permissible if pig tissue valves are used according to Islamic beliefs ?

Getting a fixed retainer on one's teeth

Q: Do you think I can get a fixed (permanent) retainer as opposed to a plastic retainer for my teeth which I can get off and on, just for the simple reason that I feel like a plastic retainer which you take on and off and have to possibly wear forever, will be a nuisance? There have been cases where not wearing your retainer will result in your teeth shifting, which would be a huge waste of money that was spent on braces. I feel like a fixed retainer will be easier for me.