How Safe Are Protein Drinks And Powders? Here’s a snippet:
Unfortunately, most trainers and bodybuilders are influenced by what they read in exercise and bodybuilding magazines. This is worse than getting nutritional information from comic books. Look through any current bodybuilding magazine; what are the vast majority of advertisements selling? Supplements! Most of the pages in these magazines are devoted to pushing worthless powders and pills. Supplement companies slant the opinions of the magazine article writers. The articles in the magazines are geared to support their advertisers.And now The New York Times investigates what you need for a long workout; protein or carbohydrates. Gina Kolata reports:
Our entire society is on a protein binge, brainwashed with misinformation that we have been hearing since childhood. The educational materials used in most schools have been provided free by the meat, dairy, and egg industries for more than seventy years. These industries have successfully lobbied the government, resulting in favorable laws, subsidies, and advertising propaganda that promote corporate profits at the expense of national health. As a result, Americans have been programmed with dangerous information…
…Nutritional supplements can be marketed without FDA approval of safety or effectiveness. Athletes who choose to ingest these supplements should be concerned with the safety of long-term use. They are low-nutrient, low-fiber, highly-processed, high-calorie “foods,” whose consumption reduces the phytochemical density of your diet.
Ingesting more protein than your body needs is not a small matter. It ages you prematurely and can cause significant harm. The excess protein you do not use is not stored by your body as protein; it is converted to fat or eliminated via the kidneys. Eliminating excess nitrogen via your urine leaches calcium and other minerals from your bones and breeds kidney stones.
Dr. Tarnopolsky, a 45-year-old trail runner and adventure racer, might be expected to seize upon the nutritional advice. (He won the Ontario trail running series in 2004, 2005 and 2006.)I don’t bother with any of these “energy” products. The only thing I eat, either before or after my workouts, is my chocolate pudding.
So might his colleague, Stuart Phillips, a 41-year-old associate professor of kinesiology at McMaster who played rugby for Canada’s national team and now plays it for fun. He also runs, lifts weights and studies nutrition and performance.
In fact, neither researcher regularly uses energy drinks or energy bars. They just drink water, and eat real food. Dr. Tarnopolsky drinks fruit juice; Dr. Phillips eats fruit. And neither one feels a need to ingest a special combination of protein and carbohydrates within a short window of time, a few hours after exercising.
There are grains of truth to the nutrition advice, they and other experts say. But, as so often happens in sports, those grains of truth have been expanded into dictums and have formed the basis for an entire industry in “recovery” products.
They line the shelves of specialty sports stores and supermarkets with names like Accelerade drink, Endurox R4 powder, PowerBar Recovery bar.
“It does seem to me that as a group, athletes are particularly gullible,” said Michael Rennie, a physiologist at the University of Nottingham in England who studies muscle metabolism.
The idea that what you eat and when you eat it will make a big difference in your performance and recovery “is wishful thinking,” said Dr. Rennie, a 61-year-old who was a competitive swimmer and also used to play water polo and rugby.