Sexual Function Issues - Kidney Deficiency

What is your diet like? You should avoid any and all soda, try to minimize processed sugar, dairy, soy products, and alcohol. Bone marrow soups/broths would be something you could try incorporate, as well as seeds and nuts. Make sure you get a small amount of oil in your diet as well, olive or coconut are best. It can take some time to recover from so keep that in mind. As for the constipation you should ask your TCM practitioner about formula - there are a few different formulas that can help.

What specifically do you mean by male stuff? You should follow up with the doctor who performed the surgery as to whether you can expect any physical changes and/or reversal of the atrophy. There are a number of styles of qi gong, yoga, and meditation that are specifically meant to increase male vitality, though I only recommend doing them under the guidance of an experienced teacher. With any deeper style of energy work you can put yourself out of balance which is why I strong recommend finding a teacher to help you.