Why Low-Carb Diets Have It Wrong

Have you noticed that in the past few years low-carbohydrate diets have become very popular? We can open just about any popular health-related magazine and see recipes and articles targeted to the followers of low-carb lifestyle. We often hear about this or that celebrity dropping lots of weight on a strict Atkins diet. TV shows invite ‘experts’ that give you advice on how to cut more carbohydrates out of your diet: I Low-Carb Dietsrecently saw a bit on Today show where their guest suggested replacing pizza crust with a grilled chicken breast (!) – yep, just pile all of your pizza toppings and cheese on a piece of meat on your way to those skinny jeans!

And yet, the obesity levels in the US alone are at their all-time high, and we are even more sick than we’ve ever been. What’s going on?

When it comes to health and wellbeing, our priorities have undergone a dramatic shift. In fact, we are way more concerned with ‘losing weight’ these days than ‘being healthy’. In our society addicted to instant gratification, looking good on the outside is valued higher than feeling good on the inside. As for the long-term effect, or simply making sure that we’ll still be alive and kicking some 30-40-50 years from now – we just don’t care to look that far ahead.

We want to see results right then and there – and if it means sabotaging our health along the way, let it be!

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Why Losing Weight on a Low-Carb Diet is Dangerous

I’m not going to argue: if you dramatically reduce the amount of carbohydrates you consume, you are going to lose some weight. When the body is not receiving enough carbohydrates (its primary source of energy) on a carb-restricted diet, it turns to burning fat for fuel. This only happens if the body is undergoing a dramatic stress that’s putting it in the starvation mode. The acidic byproducts of this metabolic process are called ketones (acetacetic acid, B-hydroxybuteric acid, and acetone), and the process itself is called ketosis.

Trouble is, it’s hard for our bodies to stay healthy under a lot of stress. Ketosis can cause much more long-term harm to our health than the short-term effect of low-carb weight-loss is worth. Not only is it associated with loss of appetite, nausea, mental fog and fatigue, it can also cause irreparable harm to our kidneys and other vital organs. Following low-carb diets for a long time can throw our metabolism out of balance. Low-carb diets advocate for high consumption of animal foods with low amounts of fiber- and carbohydrate-rich plants. Since meat and dairy have no fiber in them, people following those diets often suffer from constipation. Plus, who wants their breath to smell like acetone?

Read more on the subject in this informative article by Dr. John McDougall.

But the biggest argument against low-carbohydrate diets is the fact that it is nearly impossible for humans to maintain this dietary pattern for a long time. Eventually, low-carb followers go back to consuming carbohydrates, and since their metabolism was compromised for so long, they tend to gain back all of the weight they’ve lost and then some. Even Dr. Robert Atkins, the founder of the famous Atkins diet, admitted that he was at least 20 pounds overweight after being on and off of his namesake diet.

Dr. John McDougall, the long-time proponent of the starch-based diet, has seen positive results in his patients both in weight-loss and regaining health. I highly recommend reading this article, in which he dissipates a number of myths about low-carb diets. For the record, I am not in any way compensated by Dr. McDougall for writing this.

Humans Have Evolved to Thrive on Carbohydrates

To prove this point, I don’t have to go very far. It’s no secret that lots of trim, healthy people in Asia have been thriving on carbohydrate-rich, rice-based diets for thousands of years. Whole grains and unprocessed starches have fueled generations of great nations all over the world (more details in this post). Those people never count their calories, enjoy lots of home-cooked meals prepared by recipes passed for generations, and maintain active lifestyles well into their old age.

(An argument can be made that with the spreading of the Western-style diet all over the world, nowadays we see more and more Asian people struggle with obesity and health problems that used to be nearly nonexistent in their society before.)

From the evolutionary standpoint, science now shows that early humans were dependent on starchy foods for survival. Carbohydrates are a good source of energy, but the availability of fruits was seasonal, so in order to consume more carbohydrates, humans turned to tubers, bulbs and other parts of plants rich in starches. Starch itself is hard to break down, therefore Mother Nature equipped us with amylase – an enzyme in our saliva that starts breaking down carbohydrates as soon as they enter our mouth. Natural selection wouldn’t have made amylase necessary for us to have if consuming carbohydrates wasn’t essential for human survival. By comparison, carnivorous animals don’t have traces of amylase in their saliva. (Watch this video by Nathaniel Dominy, PhD, for more info.)

So does it make any sense to restrict ourselves in the consumption of a macronutrient that was vital for human survival since the dawn of the mankind? I don’t think so.

Why Low-Carb Diets Remain Popular

As I’ve mentioned above, it’s hard to debate that the information on low-carb diets is very easy to come across these days. So if ditching carbohydrates long-term can be harmful for our health, why don’t we ever hear about the other, high-carbohydrate approach?

Surprise surprise: There’s much more money to be made off of diets rich in meat and dairy than the ones promoting rice and broccoli. Newspapers and popular health-related magazines strongly depend on their advertisers from dairy and meat industries, so they continue to churn out the content that makes the big guys happy. Add to this the profits of drug industry from selling us medicine to treat the symptoms of diseases caused by excessive meat and dairy consumption, and you get the picture.

 Have you noticed that the word ‘carbohydrate’ itself has gained a negative connotation in the past years? The negativity spreads both on highly-refined foods like store-bought cookies and chips, and whole foods like potatoes and rice. Average people don’t know the difference between ‘processed’ and ‘whole’ foods, so they become easy targets for low-carb promoters.

It’s usually easy to see if an article/TV special promoting low-carb diets can be traced back to the meat and dairy industries: just do a quick Google search of the author’s bio/credentials, and you just might discover the link. Sometimes it’s even easier: the article might state loud and clear that it’s ‘Sponsored by National Cattlemen’s Beef Association’ or a similar organization.

To sum up my point here, I strongly suggest that we do our own research before we jump into a new, trendy diet craze that’s heavily promoted by multiple media outlets. When out health is at stake, we ought to exercise caution, or else we risk to fall for yet another fad. In fact, do your own research of the points I’ve covered in this article for a good measure!

Also, check out other articles in the ‘Why Go Veg?’ section of my blog for more info on whole food, plant-based diet and health.

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About Alina Zavatsky - Vegan Runner Eats

Alina first made a switch to a vegan diet in 2013 to optimize her athletic performance as a marathon runner. Being vegan eventually opened her eyes on the issues of animal welfare, environmental protection, human rights and feminism. Alina hopes that her blog will help its readers on their path to making this world a better place.
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