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Dr. Oz: Longevity diet includes butter for weight loss and metabolism superfoods

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Would you like to enjoy a long, healthy life? Dr. Mehmet Oz says you can live until 100 by following the diet that he unveiled on his July 21 talk show. Find out how eating butter can boost your weight loss and which supplement reduces your risk of cancer.

When Dr. Oz first began his talk show, he frequently advocated eating whole grains. Recently, however, he's invited Dr. David Perlmutter, author of "Grain Brain: The Surprising Truth about Wheat, Carbs, and Sugar–Your Brain’s Silent Killers," to appear on his show. Dr. Perlmutter advises avoiding grains for weight loss and health.

Dr. Josh Axe takes a different approach to the grains debate. He told Dr. Oz that he recommends avoiding grains with gluten. However, he does feel that sprouted grains can benefit your metabolism and weight loss.

In addition, Dr. Axe suggests using coconut flour to replace regular flour. When it comes to healthy fats, he warns against peanut butter. Instead, Dr. Axe says almond butter can boost your metabolism.

Do you use canola oil? Dr. Axe says that by replacing it with grass-fed butter, you can burn more belly fat and lose weight more easily.

The best supplement for reducing your risk of cancer is vitamin D. Dr. Oz suggests taking 1,000 IUs daily and says it also can reduce your risk of diabetes.

Color your diet purple for brain health. Dr. Oz recommends eggplants, grapes, beets, blueberries and even red wine. When you feel 80 percent full, try to stop eating to extend your life and lose weight.

Dr. Oz has featured the benefits of eating nuts on several shows. But when it comes to longevity, walnuts are the winner for heart health. Just seven walnuts daily can give you a healthy dose of omega-3 fats, which helps your metabolism function at optimal level.

When it comes to your metabolism, a new study shows that stress can play a key role in weight loss. Researchers found that women who felt stressed and then ate a high-fat meal had slower metabolisms as a result, reported Psych Central on July 19.

"This means that, over time, stressors could lead to weight gain," said lead author Dr. Jan Kiecolt-Glaser, professor of psychiatry and psychology at Ohio State University. And it's a vicious cycle: You feel stressed, so you eat comfort foods such as ice cream, which can make you feel stressed about gaining weight.

"We know from other data that we’re more likely to eat the wrong foods when we’re stressed, and our data say that when we eat the wrong foods, weight gain becomes more likely because we are burning fewer calories," said Kiecolt-Glaser.

The impact on the metabolism after stress is significant. Women who said that they felt stressed the previous day burned 104 fewer calories during the hours after eating a meal high in fat. That caloric reduction could equal 11 pounds annually.

And that high fat diet by itself could cause a different type of problem: Sensitivity to odor. Florida State University neuroscientists have discovered that eating a diet high in fat caused problems with the ability of laboratory animals to sniff out changes in scents, reported Medical Xpress on July 21.

"This opens up a lot of possibilities for obesity research," said study leader Florida State University post-doctoral researcher Nicolas Thiebaud. Even when mice returned to their normal diets, they suffered problems.

"When high-fat-reared mice were placed on a diet of control chow during which they returned to normal body weight and blood chemistry, mice still had reduced olfactory capacities," revealed biological science professor Debra Ann Fadool. "Mice exposed to high-fat diets only had 50 percent of the neurons that could operate to encode odor signals."

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