It's due to our lifestyle, 100%. I know some don't like to trust the science, but may the downvotes come :

https://www.sciencedirect.com/science/article/abs/pii/S01614...

https://pubmed.ncbi.nlm.nih.gov/18266879/

https://pubmed.ncbi.nlm.nih.gov/18086216/

https://www.researchgate.net/publication/352773611_Health_ef...