. >> reporter: meet marlene beltran and lisandra lanusa.plans yet. the tongue patch diet. plastic mesh known for hernia repair is sewn onto the tongue making eating solid food painful if not impossible. >> this is our patch. there it is. we put it right into the portion of her tongue. >> reporter: it's a kind of aversion therapy, pioneered in the u.s. by cosmetic surgeon dr. nicholas shegay. he introduced the procedure four years ago after first seeing it done in latin america. >> it doesn't fit me anymore. >> reporter: lisandra lanusa, 27 years old and married. and 20-year-old marlene beltran. each hope to drop 20 pounds in 30 days. you heard that right. 20 pounds in one month. and they're ready to take desperate and extreme measures to make it happen fast. >> in a month's time i will be going to hawaii. i'll be wearing this bikini. and hopefully, i'll be looking great. >> reporter: when it comes to food, lisandra can't help herself. >> i love eating everything. american food, korean. >> reporter: and neither can marlene. >> i have a sweet

. >> reporter: meet marlene beltran and lisandra lanusa. most extreme weight loss plans yet. the tongue patch diet. plastic mesh known for hernia repair is sewn onto the tongue making eating solid food painful if not impossible. >> this is our patch. there it is. we put it right into the portion of her tongue. >> reporter: it's a kind of aversion therapy, pioneered in the u.s. by cosmetic surgeon dr. nicholas shegay. he introduced the procedure four years ago after first seeing it done in latin america. >> it doesn't fit me anymore. >> reporter: lisandra lanusa, 27 years old and married. and 20-year-old marlene beltran. each hope to drop 20 pounds in 30 days. you heard that right. 20 pounds in one month. and they're ready to take desperate and extreme measures to make it happen fast. >> in a month's time i will be going to hawaii. i'll be wearing this bikini. and hopefully, i'll be looking great. >> reporter: when it comes to food, lisandra can't help herself. >> i love eating everything. american food, korean. >> reporter: and neither can