Gwyneth Paltrow is living off food stamps for a week as part of Mario Batali's "Food Bank Challenge," where people are invited to limit their family's food budget to $31 a week — about $1.38 per meal.

Paltrow, a Hollywood actress and founder of the lifestyle curation site Goop, has often been criticized as being "rich and oblivious," (her holiday gift guide once suggested a $995 cashmere throw blanket).

She posted her grocery haul this week on Twitter, which totaled $29.

Some folks on Twitter weren't impressed with Paltrow's attempt to join the commoners for a week's worth of food shopping.

The Telegraph discussed Paltrow's food-stamp challenge in an article titled "No Gwyneth, busy mothers can't live on lettuce, limes, and beans," pointing out that "Paltrow's selection of green vegetables meant she would be consuming fewer than 1,000 calories a day — that is about half what the NHS recommends for a healthy, balanced diet."

"Nutritionally speaking, this is a vitamin bonanza," writer Rebecca Vipond Brink said on The Frisky. "But people who live on SNAP benefits don't just have to get nutrients, they have to get actual calories, because they tend to have very physical lives, doing service labor and taking care of children and not necessarily being able to afford a car and so forth.”

A volunteer at St. Ignatius Food Pantry bags items as Larry Bossom, 41, who lost his job a few month ago, visits the facility Friday, Nov. 1, 2013, in Chicago. Bossom is relying on food stamps and the food bank to help him until he finds work again. More than 2 million low-income Illinois residents who receive food stamps will soon see their benefits cut. AP

Here's Brink's idea of a more respectable shopping list on a $29 budget — items including peanut butter, oatmeal, potatoes, and frozen chicken breasts made that list.

Brink understands that a healthier $29 shopping-cart haul isn't necessarily accessible for the 46 million American families living on SNAP (food stamps) and those who don't live in walking or driving distance to a grocery store. Instead, they take advantage of the food that's close and convenient — mostly fast-food restaurants that offer a lot of food for a low price.

But if the point is not for Paltrow to live on lettuce and rice for a week, but instead to get people talking about the millions of people who struggle to access affordable and healthy food, then maybe it's working.