Usually we get someone on these threads who argues that they are they healthy kind of fat. I don’t think that happened here but here is a recent rebuttal to that argument. http://www.nbcnews.com/health/diet-fitness/energize-your-eggs-11-easy-ways-better-breakfast-n284756

To be fair , lots of asymptomatic skinny people are going to get sicker over 20 years too, if not metabolic or cardiac problems something else will get them(us), especially if the 20 years covers something like ages 50-70 or 60 to 80.