Any time you engage in repetitive impact exercises for conditioning, you run the risk of developing health problems that don't show up until later in life. How much later, and how severe, depends on a lot of things, including how intensly you trained, how frequently you trained, how well you took care of yourself between sessions, what specific methods you used, and your individual genetic makeup which affects how your body responds to such things.
Any time you engage in high-impact combative activities, you run the risk of getting an injury, including the type that could become chronic and affect your health in the long run. As the above, it also depends on a lot of things.
Your training can also bring a lot of good things into your life. You need to weigh and balance the good against the bad, and make decisions about how much risk you are willing to accept from the process, and adjust your training accordingly. And then live with the results, whether they are good or bad. It boils down to your choice.