If you smoke a lot of shitty weed maybe, with better quality weed you inhale less smoke so less potential damage. Theres still nothing in the hundreds of years that man has used marijuana to suggest that it significantly damages the lungs or rest of your body.
Higher incident of throat infection maybe, I personally have never experienced this problem.
It is also important to note that marijuana smoke does not cause emphysema because it does not effect the small airways like tobacco smoke.