There's a huge difference between the acute inflammatory response (obviously good and necessary for life) and chronic inflammation (very bad).
The biology is hideously complex and not well understood. This past year I've gone through thousands of paper and feel like I'm just getting a real handle on how little is known. Mechanisms (not to mention downstream effects) for some of the most widely and commonly used medications are practically medical mysteries and new metabolic pathways are discovered basically daily.
Luckily almost all of the peer-reviewed primary literature is indexed on PubMed, and you can use ResearchGate, Altmetric, etc to help prioritize your research. Once you start reading you'll see that there's tons of conflict and disagreement.
If you're looking for something a step up from pop journalism (which is terribad), you can start with sites like Examine or Health Line which at least give proper citations, but in the end, I suspect you're just going to need to do your own spelunking and come to your own conclusions because the quality of life-sciences research is quite frankly... uneven at best. Nutritional research is particularly bad.
Chronic inflammation is definitely turning out to be a topic of great interest lately. Here's some starting points (you can follow the citation chain if you actually care):
Pahwa, Roma, and Ishwarlal Jialal. “Chronic Inflammation.” In StatPearls. Treasure Island (FL): StatPearls Publishing, 2019. http://www.ncbi.nlm.nih.gov/books/NBK493173/.
Lawrence, Toby, and Derek W Gilroy. “Chronic Inflammation: A Failure of Resolution?” International Journal of Experimental Pathology 88, no. 2 (April 2007): 85–94. https://doi.org/10.1111/j.1365-2613.2006.00507.x.
Freire, Marcelo O., and Thomas E. Van Dyke. “Natural Resolution of Inflammation.” Periodontology 2000 63, no. 1 (October 2013): 149–64. https://doi.org/10.1111/prd.12034.
Hunter, Philip. “The Inflammation Theory of Disease.” EMBO Reports 13, no. 11 (November 2012): 968–70. https://doi.org/10.1038/embor.2012.142.
Straub, Rainer H., and Carsten Schradin. “Chronic Inflammatory Systemic Diseases.” Evolution, Medicine, and Public Health 2016, no. 1 (January 27, 2016): 37–51. https://doi.org/10.1093/emph/eow001.
Murakami, Masaaki, and Toshio Hirano. “The Molecular Mechanisms of Chronic Inflammation Development.” Frontiers in Immunology 3 (November 15, 2012). https://doi.org/10.3389/fimmu.2012.00323.
Minihane, Anne M., Sophie Vinoy, Wendy R. Russell, Athanasia Baka, Helen M. Roche, Kieran M. Tuohy, Jessica L. Teeling, et al. “Low-Grade Inflammation, Diet Composition and Health: Current Research Evidence and Its Translation.” The British Journal of Nutrition 114, no. 7 (October 14, 2015): 999–1012. https://doi.org/10.1017/S0007114515002093.