I don’t think anyone in America has been...not truly hungry...except for the psychologically disturbed.
Too easy to get food in America.
But, if you are asking if I’ve ever spent a day working so hard and fast that food didn’t enter the picture, then, yes, I’ve been there.
Many in America with intermittent low blood sugar are very thankful to locate a vending machine with peanut butter crackers or similar food. Or a fast food burger joint.
While on one of Uncle Sam's tropical vacations in sunny Southeast Asia, I managed to loose about 40 lbs in a month. Perhaps I was not REALLY hungry, but I was a mite peckish. I was also probably a bit "psychologically disturbed", or at least a little aggravated from time to time.
(BTW, you are correct. I've seen people die from hunger during a famine - very few in American have been truly hungry.)