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The Eye-Opening Truth About Protein

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More Protein Facts

Meat doesn't beat plant-based protein.

Of the 20 amino acids that make up protein, 11 are produced by the body and nine come from food. Meat, poultry, fish, eggs, and dairy contain all nine, which is why you may have heard them called complete proteins. But plant-based foods, like nuts, seeds and grains, are lacking or extremely low in one or more of those amino acids, says Margaret McDowell, PhD, RD, a nutritionist at the National Institutes of Health. As long as you eat a variety of these foods, though -- think brown rice and beans or whole-grain cereal and soy milk -- you'll get the nine you need. Bars, powders, and shakes made with casein or whey, two milk proteins, are complete on-the-go options.

You'll get more out of your workouts if you pound protein afterward.

You don't have to be a marathoner to benefit from a protein chaser. "Your muscles are like sponges for 30 to 45 minutes right after exercise, whether you've done cardio or strength training," says John Ivy, PhD, a professor of kinesiology at the University of Texas. If you give them some protein in that magic window, they're primed to put it to use rebuilding and repairing the microtears in muscle tissue that occur every time you work up a sweat. This makes you less sore the next day and increases your lean muscle mass, which helps your body burn calories more efficiently 24-7.

Pick a post-workout snack with 12 to 14 grams of protein and about 40 percent of the calories you've burned (45 minutes on the elliptical torches about 300 calories, earning you a 120-calorie pick-me-up, for example). Best bets: a cup of nonfat Greek yogurt with berries, a handful of crackers and string cheese, or half a bagel with peanut butter. Besides protein, each of these combos contains carbs, which speed up muscle mending and replenish your reserves of glycogen, a form of energy that fuels you during intense bouts of activity.

 
There is such a thing as too much protein.

It would take some serious effort, but OD'ing on protein -- say, eating hundreds of grams a day -- can lead to trouble, according to research. Here's why: As your body digests protein, it produces nitrogen as a by-product, which your kidneys have to work to process and eliminate as urine. Therefore, huge amounts of protein put a big-time strain on your kidneys. And they're not the only organs affected by too much of a good thing; certain sources of protein can hurt your heart too. A recent Harvard School of Public Health study found that having one small serving of red meat a day increases your chances of dying from cardiovascular disease and other causes by 13 percent, while consuming processed meat, like bacon and hot dogs, ups your chances by 20 percent.

Originally published in FITNESS magazine, February 2013.

 

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4/29/2013 06:22:48 PM Report Abuse
independentmediationservices wrote:

Thank you for information about specific gram content of dietary need for protein. Diabetes is in my genetic composition and I have had difficulty maintaining healthy weight--until I supplemented my diet with 42 grams of soy protein each day-which allows me to eat the foods I enjoy and make better choices when I do eat. It is important to have factual information in order to make better food decisions. Again, thank you!!! Pat

4/13/2013 08:51:20 AM Report Abuse
wcmahne wrote:

I do not agree. I have lost 25kg's on Atkins, 12 years ago, never regained it and I am NEVER EVER hungry.. THREE A's for high protein.

4/10/2013 11:15:28 AM Report Abuse

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