https://www.nhlbi.nih.gov/health/metabolic-syndrome
metabolic disease = all things that can be fixed by lifestyle modifications ( unless you are too far gone, ie).
see my reply here: https://news.ycombinator.com/item?id=32744868
For example, there are a lot of people on psychiatric medications that can cause metabolic syndrome as a primary side effect.
Would be interesting to know how often.