Mrs Easton and Ms Nisbet said the key to losing weight wasn't eating slow, it was about a whole lifestyle change.
Mrs Easton, who dropped 12kg on a Gold's weight loss challenge, put on 3kg recently after taking four weeks off from her daily gym programme. She said stress was why her weight increased - not "bolting" down her food.
"I only eat fast when I'm busy and rushing around to get things done. I generally gain weight when I'm stressed and I eat food I shouldn't be putting in my mouth."
She knows what to do to lose weight - change what she puts in her mouth, get regular exercise and surround herself with positive people.
"I was always running around after teenagers and I decided it was time to focus on me and get alongside positive people.
"I'm not just a mother, wife and grandmother - I have a life too."
Gold's fitness trainer Tania Nisbet said she wasn't so sure slow eating middle-aged women lost more weight than those who ate fast.
"I think it's quite bizarre ... It's just the older you get, the easier it is to gain weight - it's a totally different ball game at middle-age," she said.