The makers of "F-cup cookies" claim that women who eat them will see an increase in breast size.
The cookies contain Pueraria Mirifica, a plant extract from Thailand, and women are supposed to eat two cookies a day in order to see results. According to the product's website, Pueraria Mirificav is also found in an edible breast enhancer called Bust Up Gum.
The cookies come in two flavors -- Soy Milk or Pralines and Chocolate -- and each one of them is 70 calories.
"Phytoestrogens are in numerous foods and to date there is no research to show that ingestion changes breast size," nutrition expert Ian Marber told the Daily Mail. "Even concentrated doses haven't been shown to do anything, although eating several biscuits can lead to weight gain with all that goes with it."
In case you were wondering, an F cup in Japan is similar to a DD cup in the U.S.