Research has already found a big difference between the bacteria population in the guts of fat and thin people.

ECONOMIST: The microbiome

The great 19th-century philanthropists laid down their fortunes and set up their foundations in the days when profits were fat, taxes thin and labour weak.

ECONOMIST: How to spend money and influence people

Americans overemphasize the importance of being thin, said professor Glenn Gaesser, author of "Big Fat Lies" and director of the Healthy Lifestyles Research Center at Arizona State University.

CNN: Thin is in, but fat might be better

Leptin has led to a revolution in the study of why some of us are fat and others of us are thin.

BBC: Born to be fat

Koetsu's sources reached back hundreds of years, and yet his way of writing "fat and thin" characters, some bold and emphatic and others trailing to the faintest visual whisper, was peculiarly his own (at least among Japanese calligraphers) and difficult to emulate.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu

Drives shriveled down to desk size, then to desktop size, then the size of a fat dictionary, followed by a thin paperback, a deck of cards and now just a single card or chip.

FORBES: Digital Rules