. >> reporter: meet marlene beltran and lisandra lanusa. two women about to start one of the 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, k

. >> 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

marlene beltran weighs 169 pounds because of her out-of-control appetite. >> i get, like, cravings. sometimes in the middle of the night, i'll just be, like, "oh, i want a brownie," or "i want ice cream." this time, i'm just really motivated and i am almost 21 and i do have plans, and i want to look my best and feel good. >> i love eating everything. >> reporter: lysander lanuza is 200 pounds of all-you-can-eat. >> american food, filipino food. korean. it's heaven. >> reporter: their goal is to each lose 20 pounds in one month. marlene wants to begin dating. lysander has a bikini and a deadline. >> in a month's time, i'll be going to hawaii and i'll be wearing this bikini and i'll -- hopefully, i'll be looking great. >> so, this is our patch. and we put it right on the interior portion of her tongue. >> reporter: it's called the tongue patch. cosmetic surgeon dr. nikolas chugay introduced the procedure in the u.s. four years ago after first seeing it done in latin america. >> i thought, you know, this is a good way to help people lose weight quickly. our first stitch is already in.

. >> reporter: meet marlene beltran and lysander lanusa.o start one of the most extreme weight loss methods yet. the tongue patch diet. plastic mesh meant for hernia repair is sewn onto the tongue making eating solid food painful if not impossible. >> all right. the first stitch is already in. >> you are sewing a foreign object into somebody's mouth. is that healthy? >> it's not unhealthy. we have not encountered any of this, we have not seen any infection, we have not seen a s. >> the sirnurgery is finished. >> i can't feel my tongue. >> reporter: she'll be able to speak normally in a few hours when the anesthetic wears off. but all that greasy fried food she loves, forget it. it's a strict 800 calorie per day liquid diet of juice, broth, and shakes until the patch is removed in a month. >> have you receive flak from colleagues in the medical community over this? >> no, i haven't. >> reporter: dr. chugay, meet dr. rob huizenga. >> i think it's a barbaric procedure. >> reporter: better known as dr. h. he specializes in long-term weight loss

. >> reporter: meet marlene beltran and lysander lanusa.o start one of the most extreme weight loss methods yet. the tongue patch diet. plastic mesh meant for hernia repair is sewn onto the tongue making eating solid food painful if not impossible. >> all right. the first stitch is already in. >> you are sewing a foreign object into somebody's mouth. is that healthy? >> it's not unhealthy. we have not encountered any of this, we have not seen any infection, we have not seen a s. >> the sirnurgery is finished. >> i can't feel my tongue. >> reporter: she'll be able to speak normally in a few hours when the anesthetic wears off. but all that greasy fried food she loves, forget it. it's a strict 800 calorie per day liquid diet of juice, broth, and shakes until the patch is removed in a month. >> have you received flak from colleagues in the medical community over this? >> no, i haven't. >> reporter: dr. chugay, meet dr. rob huizenga. >> i think it's a barbaric procedure. >> reporter: better known as dr. h. he specializes in long-term weight los