Yes, and many, many Americans are malnourished from eating too many cheap carbohydrates and insufficient vegetables, fruit and quality protein. I don’t intend to be one of them. It is no wonder we spend so much money on health (sickness) care which we taxpayers are all supporting financially. When I was in school in Mexico in 1957, one of my mother’s monthly $70 checks did not come. I had also loaned a friend $20 which they did not repay. I lived on $5 for 3 weeks, buying kilos of tortillas, white wheat rolls and getting guys to treat me to a meal or a beer. I gained 10 pounds which I lost after 4 months back in the USA eating better food.
There is a big, big difference between spending $300 a month on groceries for one and living on $5 of tortillas for three weeks.
It does not take nearly $300/month to prepare and eat a healthy diet anywhere in the US in 2019.