Just say no... to potatoes!!!

Next time you're tempted to order hash browns, French fries or potato chips, remember this: These foods are the number one cause of long-term weight gain, according to a new study published in the New England Journal of Medicine.

Right up there with them? Red meat and sugary drinks. So wean yourself off the pudge-inducing culprits and you may see the number on the scale drop.

Longevity bonus: Not only will you have a slimmer silhouette, but you may add more years to your life. According to a new study published in the British Medical Journal, obese women are more likely to die at younger ages than those at healthy weight.