1) Find a functional medicine doctor. Western medicine doctors (mostly) aren't trained to care about root causes. They find, and treat, symptoms. (i.e. You got pain? Here's a pill.) If you find one that does, that person has gone off the reservation and decided
on their own to pursue other avenues. A functional medicine doctor will try to get at the root cause. They will also try to throw diet and lifestyle solutions at problem before turning to pills. Of course, one of the main reasons western medicine is so popular is the utter DISDAIN for making the necessary diet and lifestyle changes required for better health in our culture. So it's not all the doctors' fault. And I say all of this as someone who is married to a general practitioner.
2) Resistance training. Yes, start light. Yes, stop if it hurts. No, I'm not a doctor.
That said, I can point you to a zillion studies that show ridiculous amounts of health benefits that come from resistance training (physical, emotional, cognitive, etc. Yes, resistance training is even good for your brain). No, I didn't say "exercise". I said RESISTANCE training (weights, cable machines, resistance bands, even body weight exercises). You strengthen the muscles around that joint, and you'll very likely feel less pain. There's no need to join a gym (although that would be great). You can get cheap resistance bands on Amazon. You can also look into a suspension trainer. It's literally some straps that use body weight to create the resistance. Add some protein to your diet so the muscles can grow. Whey protein powders are cheap. Or I prefer to just eat enough meat, fish, and eggs to fill a shopping cart every day.
Seriously, one of the major benefits of resistance training is an anti-inflammatory effect on the body.
Amazon.com : FITI DARE Portable Pilates Bar Kit with Adjustable Resistance Band (25,30,35lb) | Home Workout Equipment for Women&Men of All Heights | Fitness Bands Set | Outdoor Full Body Exercise Gym with Video : Sports & Outdoors
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3) NATURAL anti-inflammatory supplements.
Fish oil - also good for your brain.
Quercetin - also can be good for allergies
Turmeric - Active anti-inflammatory ingredient is curcumin, so find one that is either high in it or just curcumin.
Zinc - Bulletproof makes a good one that also has copper in it. (Copper is off topic but also good for you.)
Ginger - I just use it as a spice, but you can find it in supplement form.
4) Eat WHOLE foods when possible. Processed foods are terribly inflammatory. A study came out recently showing that processed foods make up about 60% of the average westerner's diet. You can find about a billion articles online showing you which foods are particularly anti-inflammatory in nature. Avocados, salmon, blueberries, olive oil, very dark chocolate (at least 80% cacao), and walnuts usually wind up on most top-20 lists.
Don't throw in the towel. Don't just chalk it up to "getting older". Don't just pop more ibuprofen and keep buying lighter basses.
I will not go quietly into that good night. I didn't really start training until late February or early March. Now (at 51 years old) I'm benching well over 200 lbs (90 kilos) and heading toward a 350 lb (around 160 kilos) squat. I have actually GAINED weight (from 190lbs/86 kilos to 215 lbs 98/kilos) but reduced my pants waist from a tight 34"/86cm to a loose 33"/83cm.
The best part? I FEEL BETTER! I don't get out of bed and walk like the tin man with no oil in his joints for the first half hour anymore. I don't suffer from nagging aches and pains daily. Even headaches are very rare for me. On the rare occasion I do feel pain worth treating I have to remember where we keep the ibuprofen in my house. I'm not weak like many my age in my area. And I'm simply not falling apart. I stand in a circle with neighbors and the conversation almost always turns to this pain or that doctor visit or this favorite activity they can no longer participate in. I'm not going to be that guy. I've already told my wife that the day after I retire I'm starting surfing lessons.
Sorry for the long post.