Can’t read the article due to a paywall. So I don’t know if these experts left out the bacteria populations aboard each person. The differences in the types of little creatures running the show in each person’s body may be a huge factor. Of course vitamin and mineral deficiencies and diet will change a person. Genetics plus epigenetics (the way your individual behavior literally affects your genes) makes us all unique.
RE: Can’t read the article due to a paywall.
That’s strange. I can access the entire article without being asked to pay.