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American sugar consumption:
http://www.cdc.gov/nchs/data/databriefs/db122.pdf
http://www.ers.usda.gov/data-products/sugar-and-sweeteners-yearbook-tables.aspx#25512
http://www.usda.gov/factbook/chapter2.pdf

Avena, Nicole M., Pedro Rada, and Bartley G. Hoebel. “Evidence for sugar addiction: behavioral and neurochemical effects of intermittent, excessive sugar intake.” Neuroscience & Biobehavioral Reviews 32.1 (2008): 20-39.

Breslin, Paul AS. “An evolutionary perspective on food and human taste.”Current Biology 23.9 (2013): R409-R418.

Goodman, Jarid, and Mark G. Packard. “Memory systems and the addicted brain.” Frontiers in psychiatry 7 (2016).

Kearns, Cristin E., Laura A. Schmidt, and Stanton A. Glantz. “Sugar industry and coronary heart disease research: a historical analysis of internal industry documents.” JAMA Internal Medicine (2016)

Lerma-Cabrera, Jose Manuel, Francisca Carvajal, and Patricia Lopez-Legarrea. “Food addiction as a new piece of the obesity framework.” Nutrition journal 15.1 (2016): 1.

Mintz, Sidney. “Sweetness and power: the place of sugar in world history.”Viking, New York (1985)

Volkow, Nora D., Gene-Jack Wang, and Ruben D. Baler. “Reward, dopamine and the control of food intake: implications for obesity.” Trends in cognitive sciences 15.1 (2011): 37-46.