Why Do We Gain Weight On a Processed Food Diet?

Processing is a good thing. And a bad thing.

Stephen Nett
The Startup
Published in
6 min readAug 8, 2019

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So many choices, what to eat? Photo: Stephen Nett

We’re watching calories, we’re changing our diets, and what happens? It seems like our weight meanders all over the map, or stalls, with little explanation why.

Here’s the problem: careful studies tell us that eating a fixed number of calories every day will cause you to gain weight.

Or, to lose weight.

Yes, you read that correctly. Eating exactly the same number of calories can cause your weight to go up or down.

It all depends, science has found, on how the food you’re eating was prepared.

How can that be?

To find the answer we need to go far back into our evolutionary history, and end up with our love affair with ultra-modern food.

Processed food is not an inherently bad thing, by the way, as far as diets are concerned. But it can have a powerful impact on our health. So before diving deeply into keto, carnivore, paleo, vegan or any other popular diet program, it’s essential to first understand how food processing actually works.

Back when humans were just as likely to be eaten as find something to eat, we lived on whatever we were lucky enough to find or gather. That was mostly roots…

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Stephen Nett
The Startup

Writer, science editor, naturalist, entrepreneur. Hunting solutions, reporting from the deep end of the pool.