Actually it depends on "how" you lift. You can train in a fashion that will not cause harm to your joints and ligaments. My coach is proof of that, and I am too, to an extent. In my coach's case, at 60 years of age, he has a six pack, peaked biceps, and can roll (BJJ/MMA) with anyone of us at half his age. The only injury he has was not brought about by training. As for me, at 35, I train/teach, BJJ/MMA at least three days a week, and lift three as well, I'm also a former Army grunt; to this day, no joint or musculature issues. IF you consistantly overtrain yourself, then yes, you are absolutely prone to the the issues your concerned about.
Find a guy with a CSCS certification (Certified Strength and Conditioning Specialist) and he will give you more help than you'd ever imagine. People with these certs are far and above the personal trainer in the gym.
Also check out some of the kettlebelle and clubbell training. They are AMAZING for over all conditioning and strength training.
Check out: www.clubbell.tv , or www.renegadetraining.com
I've trained a bit with Sonnon, and my body did feel revitalized from possible patheway down to a repetitive strain injury. (BTW, I do not sell, endorse, or affiliate with either of those sites)