@joangma- This is a terrific question. Although I'm not a dietician nor do I have a medical degree. I can just attest to my own health. Keeping my weight down by eating a balanced diet is very helpful to me. Any added weight puts pressure on all of my organs. I can really feel it in my lungs. I take vitamins and some supplements. I also drink a cup of turmeric tea to help with inflammation. To be honest I have no idea if any of them have helped me, but not being over weight certainly has.
Here is a good study that might interest you. https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2222.2001.01064.x
If you have any further questions about this I'll gladly help research the answers. To find out more about this and see some positive results would be fantastic. What questions could we ask to get more up to date information?
https://thorax.bmj.com/content/62/9/786.short