I remember reading articles by Professor Yudkin - in the 70s, I believe - in which he described sugar as "pure, white and deadly". I've no doubt he was right in that a lot of sugar can be harmful in many ways.
But I'd say these days that salt is a bigger enemy of health for most people. - "Pure, white and deadlier still..."
See my website http://www.wildeaboutsteroids.co.uk/.html (The site does not sell anything and has no banners or sponsors or adverts - just helpful information.)
Read my Mensa article on Obesity and the Salt Connection
prescribed steroids and HRT
See Sodium in foods
and Associated health conditions
and FAT RETENTION