Author
Anand Subra, Ph. D., Chief Knowledge Officer, PurpleTeal, Inc., is a co-founder of PurpleTeal and is responsible for new product development as well as providing knowledge support for strategy, marketing and delivery initiatives.
In general, weight is affected by physical activity level and calorie intake.
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Yes and No.. We should look at the lifestyle of our ancestors and how food fit into it: they ate a lot of food but were also physically very active; they needed the energy to sustain the activity. Their food intake and activity levels were better balanced, so they did not put on a lot of weight and had fewer health problems. Today, we are not that active, but eat a lot more food than we should. They also ate a limited variety of mostly locally-sourced fresh foods; today, we have access to a huge variety of foods with a much larger nutritional footprint. We should emulate some things they did and discard others.
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