Government eating guidelines.
According to Scientific American, growing research into carbohydrate-based diets has demonstrated that the medical establishment may have harmed Americans by steering them toward carbs. Research by Meir Stampfer, a professor of nutrition and epidemiology at Harvard, concludes that diets rich in carbohydrates that are quickly digestible—that is, with a high glycemic index, like potatoes, white rice, and white bread—give people an insulin boost that increases the risk of diabetes and makes them far more likely to contract cardiovascular disease than those who eat moderate amounts of meat and fewer carbs. Though federal guidelines now emphasize eating more fiber-rich carbohydrates, which take longer to digest, the incessant message over the last 30 years to substitute carbs for meat appears to have done significant damage. And it doesn’t appear that the government will change its approach this time around. The preliminary recommendations of a panel advising the FDA on the new guidelines urge people to shift to “plant-based” diets and to consume “only moderate amounts of lean meats, poultry and eggs.”