I have cracked my neck and other parts for the past 20years since I was 8 or so. A bad habbit I learned from my mom.
Question. I was a healthy boy as far as that goes, now My joints always hurt and my neck seems really bad, I have trouble with light and always feel tired. very stiff in the morning.
Also if I were to turn upside down I can feel my head leave my body a bit, and have bad blood circulation my head fills with blood like im about to the point of almost passing out.
Doctors dont seem to know anything. This is normal, not all doctors know everything. but will still say you are fine, because they don't know. I told a doctor once about cracking my neck and he did not understand what that meant.
Message. I belive there are problems that can come from cracking and grinding ones joints. Its just not a big enough problem for doctors to know about. Joints I have cracked toes, outer foot, ankle grinding, knee forward crack, lower back twist, fingers-fingers are crooked now. elbow a recent addition-picture putting your hands together to crack them, and neck.
I learned a new neck move. Its pushing your head back and up from your chin, while you fight it with your head.
I snap my cats necks too. I note it get stronger the more you do it.
I did this to myself, I hope I can recover.
Sure my neck only cracks a few times a day now, but I am always streching it hourly to try to releave pain or irritation.
hope this helps.
Let me know your story.