BMI is a made up term. A term invented by insurance companies to fraudulently screen clients to supply them with coverage. It is not in the best interest of the medical industry to keep you healthy. There's no profit to be made from this. BMI is an excuse to make skinny people feel unhealthy and to prescribe ineffective unnecessary drugs. Do not pay mind to their ruse. People will believe any published piece as the source of truth. "Thou who cureth can maketh ill".