Scientists found key to successful and long-term weight loss

Studies show nearly 2 out of 3 people who lose 5 percent of their total weight will gain it back, and the more weight you lose, the less your chances of keeping it off.

"That's not surprising," said Diane Robinson, PhD, a neuropsychologist and Program Director of Integrative Medicine at Orlando Health. "Most people focus almost entirely on the physical aspects of weight loss, like diet and exercise. But there is an emotional component to food that the vast majority of people simply overlook and it can quickly sabotage their efforts."

A recent national survey of more than a thousand people commissioned by Orlando Health found that 31 percent of Americans think a lack of exercise is the biggest barrier to weight loss, followed by those who say it's what you eat (26%) and the cost of a healthy lifestyle (17%). Another 12 percent said the biggest barrier to weight loss was the necessary time commitment.

Only 1 in 10, however, thought psychological well-being was a factor.

In fact, researchers have found a link between emotional issues like stress, anxiety and depression, and higher body mass indexes (BMI). Many of us can relate to the idea of overindulging at happy hour after a bad day at the office, for example, or eating a pint of ice cream to help us deal with bad news.

That was common coping mechanism for Shekyra DeCree, of Columbus, Ohio. "As a mental health therapist, my job can be very stressful, and everyday when I got home from work, the first thing I would do is go to the refrigerator," she said. "That was my way to calm down and relax."

After recognizing the emotional attachment she had with food, DeCree started making conscious changes. In just over one year, she's lost more than 100 pounds.

"I'd gone on countless diets and tried to exercise before, but this was different," she said. "You have to change the way you deal with your emotions, your stress and anxiety. Once I understood the mental aspect, I felt free."

Robinson offers these tips to help recognize the emotional connection you may have to food:

-Keep a daily diary logging your food and your mood, and look for unhealthy patterns.

-Identify foods that make you feel good and write down why you eat them. Do they evoke a memory or are you craving those foods out of stress?

-Before you have any snack or meal ask yourself: Am I eating this because I'm hungry? If the answer is no, look for the root of your motive.

The goal is to take emotion out of eating and see food as nourishment, not as a reward or coping mechanism. If you struggle, don't be shy about finding help. "When we're focused on the physical aspects of weight loss, many of us have no problem joining a gym or hiring a trainer," said Robinson. "How about joining a support group or hiring a psychologist?" she said. "If getting your body in shape hasn't work out yet, maybe this time start with your mind."

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