NY Times -Nutrition experts have long debated whether there is an optimal diet that humans evolved to eat. But a study published this month adds a twist. It found that there is likely no single natural diet that is best for human health.
The research, published in the journal Obesity Reviews, looked at the diets, habits and physical activity levels of hundreds of modern hunter-gatherer groups and small-scale societies, whose lifestyles are similar to those of ancient populations. They found that they all exhibit generally excellent metabolic health while consuming a wide range of diets.
Some get up to 80 percent of their calories from carbohydrates. Others eat mostly meat. But there were some broad strokes: Almost all of them eat a mix of meat, fish and plants, consuming foods that are generally packed with nutrients. In general, they eat a lot more fiber than the average American. Most of their carbohydrates come from vegetables and starchy plants with a low glycemic index, meaning they do not lead to rapid spikes in blood sugar. But it is also not uncommon for hunter-gatherers to eat sugar, which they consume primarily in the form of honey.
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