I think Nesh was saying in those hospitalised; that's what we're presently discussing, where obesity has been shown to be more common among those hospitalised than the general population. There must be numerous factors that play into having a bad reaction (not just severe lung infection, but development of serious instead of mild symptoms too), some of which are possibly untraceable like exposure to other coronaviruses, but others which can identified by good data tracking. Thouggh with so many data points, we can't compare everything about everyone. Does eating peanut butter every day make you more resilient, or less resilient? What about if you wake up before 6am versus after? Sleep on a synthetic pillow versus natural feather? Use an alcohol mouthwash or a non-alcoholic mouthwash? Drink less than two units of alcohol a day, or tea total, or a boozer? So many variables!