B2Up says its Bust-Up gum, when chewed three or four times a day, can also help improve circulation, reduce stress and fight ageing.
The gum works by slowly releasing compounds contained in an extract from a plant called Pueraria mirifica.
In theory, this helps to keep the muscle tissue in good order.
Pueraria mirifica, also known as Kwao Krua, is found in Thailand and Burma. Indigenous hill tribe people have long used this plant as a traditional medicine.
The plant's underground tubers contain a number of chemicals called phytoestrogens - natural compounds which mimic the effects of the female sex hormone estrogen.
These include miroestrol and deoxymiroestrol, which are believed to exert a particularly strong effect, as they are very close in chemical structure to estradiol, the main human estrogen.
B2Up says that it is the effect of these two chemicals, coupled with a third phytoestrogen isoflavone, which makes its gum so effective.
Link. Tests carried out by Thailand's Chulalongkorn University found Pueraria mirifica could enhance breast size by 80%. Further tests executed in England found the plant had a beneficial effect on the skin and hair, as well as the breasts.
Claire Williamson, of the British Nutrition Foundation, is somewhat skeptical. While research had suggested phytoestrogens may be beneficial in post-menopausal women in terms of reducing menopausal symptoms, and may also have beneficial effects on risk factors for heart disease, osteoporosis and breast cancer, she she said research had suggested that isoflavone supplements are not as effective in managing menopausal symptoms as isoflavone rich foods such as soya.
"So there is clear evidence of the potential health benefits of consuming isoflavone-rich foods such as soya, however consumption in the form of a gum has not been extensively studied and such products may be simply another food gimmick."Gum for big boobs? A gimmick? Surely you jest, Ms. Williamson. After all, it has been proven you can greatly increase your proportions with just one piece of gum and almost no adverse effects.