I don't think he is talking about disc herniation. I believe inguinal/intestinal hernia repair.
Yes, I had a rt inguinal repair with mesh done over 15 years ago.
Here is what I have experienced and what I have learned...
First off I do not think you can necessarily "strengthen some of these areas" as they are not really muscular in nature. It is more the fascia and or connective thin tissue that supports and holds the intestines in. Mine herniated down thru the holes in the pelvis where the major leg arteries run thru, so I have no idea how you would do anything to strengthen the area.
Now that is not to say you cannot learn how to hold or support your self better, as I do when doing deads. I do not bear down but tense my entire abdomen like I would keep from taking a crap. (for lack of a better word) Also let me say the repair has not hurt my lifting whatsoever. I have been pulling heavy 600+ deadlift for a few years.
You really need to be cleared by the doc however, to start training. I think I waited maybe 6-7 weeks before any type of real weight. You certainly do not want them to have to go in and repair the same bulge/tear.
Fennel seed is supposed to help and don't ask me why, but I do use it at times and kinda swear by it.
There are really nothing to mess with if you feel you may have one, as it can be a very bad problem if they strangulate and cut blood off to a portion of the intestines.
Mine was done by incision too but most, are done now arthroscopically perhaps thru the belly with little cuts and less healing time.