I've always found that the most interesting things in life occur through collaboration--when people with different backgrounds and skills look at a problem and come up with a solution. Intersections and overlaps and such.
If art imitates life, what's the best way to look at the correlation between obesity and portion size throughout history? Well two brothers, Brian Wansink, director of the Cornell University Food and Brand Lab and his brother, Craig, a professor of religious studies at Virginia Wesleyan College in Norfolk (and a Presbyterian minister, to boot) decided to take a look at depictions of the most famous meal in history--the Last Supper.
The brothers Wansink posited that since the last millennium saw dramatic increases in the production, availability, safety, abundance and affordability of food, perhaps this would be reflected in depictions of the Last Supper.
The researchers, whose study was recently published in the International Journal of Obesity, analyzed 52 paintings of the Last Supper--from artists as diverse in style and era as Titian, Da Vinci, Tintoretto, and Warhol. What they found was that the size of the entrée increased by 69%, plate size went up 66%, and loaves of bread increased by 23% over a 1000-year period. The largest increases happened after 1500.
Using a purely anecdotal method, I can see the difference in my own home. I have some plates that my mother gave to me when I first moved into an apartment, and compared to some that I purchased a few years ago, the increase in plate size is astounding. Her dinner plates look like my salad plates!
An informal survey from 1994 found that the standard plate size in the restaurant industry grew in the early 1990s, from 10 inches to 12, which equates to 25 percent more food. Since we know that obesity and diet are linked, it stands to reason that eating all the food on those extra square inches three times a day can add up quickly on your waistline.

