Perhaps this is the answer to the the previous post? 

Flavored Milk:

Flavoured milk 20 yrs ago (220 cals) and today (440 cals)1.jpg

Soda:

Snickers:

 

Milkshakes 

I think milkshakes are disgusting

Ice cream circa 1950s (at restaurants)

and now?

From mealsmatter.org

Food or beverage 1950s Expanded 2003 portion
French fries 2.4 ounces up to 7.1 ounces
Fountain soda 7.0 ounces 12 to 64 ounces
Hamburger patty 1.6 ounces up to 8.0 ounces
Hamburger sandwich 3.9 ounces 4.4 to 12.6 ounces
Muffin 3.0 ounces 6.5 ounces
Pasta serving 1.5 cups 3.0 cups
Chocolate bar 1 ounce 2.6 to 8 ounces

What do you think? Do portions and asses expand in tandem?