From my nutritionist’s perspective, a 16-ounce soda is still generous. Just one contains the equivalent of 12 packets of sugar. Just one provides 10% of the daily calorie needs of someone who typically eats 2,000 calories a day. Just one contains the upper limit of sugar intake that health officials recommend for an entire day. Once you down a 16-ounce soda, it’s best to stop right there.
You may find this hard to believe, but the original Coca-Cola was 6.5 ounces, smaller than any size available today. In the 1950s, Coke advertised its 16-ounce bottle as large enough to serve three.