High-Protein Diet 'Risky as Smoking' for Middle-Aged
But effects were reversed among over-65s
By Rob Quinn, Newser Staff
Posted Mar 5, 2014 2:21 AM CST
People between 50 and 65 should cut down on animal protein if they want to live longer, researchers say.   (Shutterstock)

(Newser) – Good news and bad news for meat lovers: People who eat a diet high in protein in middle age are a staggering four times more likely to die of cancer than people on a low-protein diet, according to new research, but people over 65 who consumed more protein were less likely to die of cancer. The study, which tracked 6,000 people over 18 years, found that people between 50 and 65 with a diet rich in animal protein were 75% more likely to die of any cause over the study period as well as much more likely to die of cancer, Scientific American reports.

But for the elderly, higher protein intake helped fight off frailty. "Your stage in life matters," the lead researcher tells the Los Angeles Times. "Some have said for years that proteins are bad. That’s half right and half wrong." The researchers believe the link between protein consumption and cancer is related to a growth hormone stimulated by high protein consumption, reports LiveScience. The source of protein mattered for the middle-aged people studied, with the risk of cancer going down steeply in those who consumed mainly plant-based proteins instead of animal proteins, though the beneficial effects of protein for the elderly weren't affected by the source.

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Showing 3 of 26 comments
JERZJOE
Mar 6, 2014 7:10 AM CST
never have i heard that "SMOKING THOSE COFFIN NAILS" are as bad as high-protein diet!!! again i will say.... wow!! i think i;am in the world of bizarro!! Everything Bizarro world does is deliberately backwards or the opposite of normal. where right is wrong & wrong is right!!
Ezekiel 25:17
Mar 5, 2014 11:32 PM CST
I stick by Doug Kauffman as he has been consistent for the eight years I have known his programs. Each year, more research shows he is right as his science is solid and not based on any conjecture or myths. His first premise is that simple carbs are the enemy of the human body. Things like white rice, potatoes, sugar, HFCS, etc. Second is that mycotoxins are attacking our bodies. We get it from fungus in buildings, corn, and peanuts. Third is that cancer, diabetes, heart disease are all interrelated maladies traced back to mycotoxins. The solution he proposes is phase I and II diets. Neither of these diets are high protein as that tends to hurt the kidneys. The only time he proposes a no-carb high protein diet is for someone already diagnosed with cancer. Then you must make the body burn ketones for energy. That starves the cancer cells. His followers have proven it works which were all sufferers of late stage cancers.
dan6807
Mar 5, 2014 7:16 PM CST
Un-scientific research is rampant on the web and any study without proper controls is garbage. This study is a vegetarian joke since only one form of protein is being targeted. The world has other sources. What are the water intake and other nutrient intake. How often did the person exercise and what was the environment? This is just scare me away from meat tactics.