To answer Mully's question, it does a whole number of good things for your hormones as listed in the one of the posts above him. However, you are correct to assume that the starvation-style of of fasting is dangerous. Many people want it now and will do silly things to get their asinine goals (see the feeding tube diet...or rather, don't)
We are not delicate flowers who will wilt without food for a few hours of activity. For example, I did something known as a PSMF (protein sparing modified fast) where I went very low carb/ low cal. I was able to help people move, be active, and still train hard ( with reduced volume however.)
Personally, I like LG because I like having a big meal at the end of the day. It helps sate hunger and really let me get past the grilled chicken and rice palette that many dieters seem to get stuck in.
Oggie:
A professional bodybuilder physique? Yeah, by training and achieving that physique you're going to be at least somewhat strong. If you're eating and training and you're growing you'll get stronger regardless of whether or not you're doing BB rep ranges/exercises. Of course if you can only lift the bar right now, you're not going to have a professional bodybuilders physique "without gaining strength". That's so mindnumbingly obvious that it goes without even saying. I doubt there's a person that's smart enough to type and or sign up for an account on a forum that thinks that you can go from non-athlete to professional bodybuilder without gaining any strength. The real point is about whether strength should be a big priority, and that is completely person dependent.
And yet we have people on this forum who have a 225 bench after 5-10 years of training, wondering how to shock the body. There's a misconception here of strength training (i.e Starting Strength, Linear progression, etc) as being the only way to train or that it is the only path that one can take here.
If you've never lifted seriously before, you have the potential to gain muscle bodyweight very quickly. The best way to do this is with a LP program incorporating the full body movements. If you have no mass, no strength, then Starting Strength (or whatever non-iditoic variant) is just the building blocks of what is hopefully the rest of your training career. It teaches you how to lift heavy, how to pay attention to progression, regression and how volume/intensity affect those, how to keep tight, etc.
And to get back to your question, ( I seem to have gone off topic a bit) people who train "BB-style" (I put quotes there because many of these young bro-builders don't train like BBers) will get stronger, yes; however getting stronger by accident is not quite the same as someone who active pursues strength. Once again, I reference some of the posters here who think a 405 squat/ deadlift, 225 bench is the pinnacle of training after nearly a decade.