My sister is a double transplant recipient - liver and kidney, and a close family friend has had a liver transplant, so everyone I know is on the transplant register. I should mention that in both cases the liver disease was genetic not self inflicted.
My sister has lived 11 years after the op so far, and our friend 17 years. They are both around 60 now. My sister's donor was a 28 year old male motorcyclist: she lives in France and they tell you a little about the donor there, but no names of course.
One danger from being immune suppressed is cancer, but my sister keeps her health by the paleo diet. This means eating like stone age people did: lots of organic meat, fat, fish, raw milk, eggs, fruit and green vegetable. She adds olive oil, coconut oil, butter, cheese, coffee and tea.
The foods she avoids are wheat, other grains, starchy food such as spuds, sugar, and anything artificial or factory made such as processed foods, marge, transfats, soy and canola.
All the blood tests she gets show she is in tip top condition. I recommend such healthy eating for anyone after a transplant.