I have some pretty standard disclaimers that I say, a lot. As a personal trainer and Pilates instructor, I am not a doctor or physical therapist. I am not a chiropractor. I am not a dietician or nutritionist. I do not diagnose or treat illness or injury.
This does not mean that I am not able to give an opinion, based on my experience and education. (Spoiler alert: if you are sick or injured, you should see a doctor or other health professional. If you want a detailed diet plan, you should consult a nutritionist.) I consistently tell people that consulting health professionals is just smart.
I can talk about macronutrients (protein, carbs, fats) and micronutrients (vitamins and minerals) and the general outline of healthy eating—whole foods, minimally processed, nutritionally dense. I can tell people that ice is a friend to swollen parts, that Ibuprofen can be wonderful for those who can take it, and that resting a hurting part is a good idea. If things are still hurting enough to keep us from doing our normal activities after a couple of days, it is time to see the doc.
Healthy living is a team sport. I do my best work in conjunction with all the other professionals who want people to live long and good lives.
Go play.