Louise and Linda are twin 47-year-old sisters from Erie. They once weighed 320 pounds each.

Now they weigh that much combined.

The women were overweight since childhood and they said they accepted their obesity as adults.

That was until Louise's son became engaged and she started thinking about her future and her health.

She said she wanted to be around to play with her grandchildren.

She started thinking about trying to lose weight and talked to her sister. The two decided to undergo gastric bypass surgery at West Penn Hospital in Pittsburgh.

Now two years and 160 pounds later, each sister is half the woman she used to be.

The two women said teamwork was key to their weight loss. They exercised together and now weight exactly the same – 160.

According to their doctor, Dr. Pavlos Papasavas, a bariatric surgeon at West Penn Hospital, that attitude put them in the 10 percent of patients who reach their goal and stay on track after gastric bypass surgery.

MORE INFO:West Penn Hospital Bariatric Surgery