In the United States, 42.5 percent of adults 20 and over are obese, while another 31.1 percent are overweight.(1) While these statistics are already alarming, the American Obesity Association suggests that by 2025, 50 percent of Americans may be obese—and this will jump to 60 percent by 2030.(2)
What’s behind this ongoing rise in Americans’ weight is the burning question—one with a complex answer. Everything from endocrine-disrupting chemicals, known as “obesogens,” in the environment(3), to chronic stress(4), and lack of sleep(5) affect fat deposition and weight gain in the human body.
Why Processed Foods Are a Key Obesity Culprit
Ultra-processed foods include items such as breakfast cereals, pizza, chicken nuggets, soda, chips, salty/sweet/savory snacks, packaged baked goods, microwaveable frozen meals, and instant soups and sauces. They’re high in sugar, and a high-sugar diet will take a toll on your health by packing on unwanted pounds at a remarkably rapid rate.When you consider that most people consume 5 or 6 times more added sugar than that each day, it’s easy to see how obesity has become more the norm than the exception. Yet, sugar is only one problem with processed foods. Another, which may be an even worse offender than sugar, is industrially processed seed oils, often referred to as “vegetable oils.”
The root of the problem lies in mitochondrial dysfunction, which is caused by the excessive consumption of a Westernized diet, including toxic industrially processed seed oils, refined flour, refined added sugars, and trans fats.
In a presentation at the ALLDOCS 2020 Annual Meeting, Knobbe cited data that found the obesity rate in the 19th century was 1.2 percent. By 1960, it had already risen to 13 percent—an 11-fold increase. It has continued to climb steadily to this day.
“Obesity is on target to be 50 percent of adults obese in the United States by 2030, half obese,” Knobbe said. “So the increase looks something like ... a 33-fold increase already in 115 years.” (8)
Long-Term Consumption of Seed Oils Sets Off Obesity Cascade
When you consume an abundance of ultra-processed foods, it’s not only a matter of taking in empty calories or that eating too many calories can cause weight gain. Eating these foods actually triggers a catastrophic cascade of health declines rooted in mitochondrial dysfunction and insulin resistance.Seed oils are a significant factor. At the root of the harmful biochemical reactions triggered by seed oils is linoleic acid. Linoleic acid accounts for about 80 percent of the fatty acid composition of vegetable oils. Omega-6 fats must be balanced with omega-3 fats in order not to be harmful, but this isn’t the case for most Americans.
To make matters even worse, most of the omega-6 people eat has been damaged and oxidized through processing. Knobbe warns that excess omega-6 induces nutrient deficiencies and causes a catastrophic lipid peroxidation cascade. This leads to electron transport chain failure which causes mitochondrial failure and dysfunction.(9)
Mitochondria are the powerhouses of your cells and provide most of the chemical energy needed for your cell’s biochemical reactions. When they malfunction, they can create reactive oxygen species, warns Dr. Knobbe. These substances are highly reactive chemical molecules, also called free radicals, that wreak havoc in your body.
“So, you’re filling up your fat cells and your mitochondrial membranes with omega-6, and these are going to peroxidize because of the fact that they are polyunsaturated,” says Dr. Knobbe.
“All right, the next thing that happens is insulin resistance, which leads to metabolic syndrome, Type 2 diabetes, nonalcoholic fatty liver disease. When the mitochondria fail, you get reduced fatty acid and beta oxidation, meaning you can’t burn these fats properly for fuel.”
If you can’t burn fats for fuel, you have to depend on carbohydrates solely. That leaves you feeling tired and gaining weight, warns Dr. Knobbe.
Refined Sugars and Grains Are Also Driving Obesity
In his most recent book, “The Case for Keto: Rethinking Weight Control and the Science and Practice of Low-Carb/High-Fat Eating,” journalist Gary Taubes explains how carbs and fats affect your body, and why replacing unhealthy carbs with healthy fats is so important if you’re trying to control your weight or blood sugar.The good thing about cutting ultra-processed foods from your diet is that doing so eliminates not only excessive amounts of refined sugars and grains, but also the omega-6 linoleic acid that’s abundant in seed oils.
Officials Advise Fighting COVID-19 by Targeting Junk Food
Some of the damages caused by processed foods have gone mainstream, as it’s become clear that obesity plays a role in COVID-19 deaths. London-based cardiologist Dr. Aseem Malhotra is among those warning that poor diet can increase your risk of dying from COVID-19 via its role in obesity and related conditions.He wrote on Twitter, “The government and Public Health England are ignorant and grossly negligent for not telling the public they need to change their diet now.”(10)
He told BBC that ultra-processed foods make up more than half of the calories consumed by the British, and if you suffer from obesity, Type 2 diabetes, and high blood pressure—all of which are linked to poor diet—your risk of mortality from COVID-19 increases 10-fold. In a paper published in the Journal of Virology agreed, researchers wrote:(11)
“Over the years, humans have adopted sedentary lifestyles and dietary patterns have shifted to excessive food consumption and poor nutrition.”
In an editorial published in the BMJ,(15) three researchers also cited the role of the food industry in driving up rates of obesity and ultimately causing more COVID-19 deaths:
“It is now clear that the food industry shares the blame not only for the obesity pandemic but also for the severity of COVID-19 disease and its devastating consequences.”
“During the COVID-19 pandemic an increase in food poverty, disruptions to supply chains, and panic buying may have limited access to fresh foods, thus tilting the balance towards a greater consumption of highly processed foods and those with long shelf lives ...”
Top Steps to Lose Weight
If you’re overweight or obese, taking steps to optimize your weight will have far-reaching benefits on your physical and mental health.This includes avoiding all ultra-processed foods and also limiting added sugars to a maximum of 25 grams per day (15 grams a day if you’re insulin resistant or diabetic). Regular exercise along with increased physical movement during your waking hours is also important, as are getting sufficient sleep and tending to your emotional health.
Taken together, by addressing the emotional side of eating and swapping out ultra-processed foods for whole foods, while staying active as much as possible, you’ll not only naturally lose weight but also propel your overall health in a positive direction.
- 1 U.S. CDC, Obesity and Overweight
- 2 American Obesity Association January 12, 2021
- 3 Curr Obes Rep. 2017 Mar;6(1):18-27. doi: 10.1007/s13679-017-0240-4
- 4 Annu Rev Psychol. 2019 Jan 4;70:703-718
- 5 Sleep Health. 2017 Oct;3(5):383-388. doi: 10.1016/j.sleh.2017.07.013. Epub 2017 Aug 15
- 6 BMJ Open Volume 6, Issue 3
- 7 Eur J Endocrinol. 2020 Jul 1;EJE-20-0541.R2. doi: 10.1530/EJE-20-0541
- 8, 9 ALLDOCS Annual Meeting 2020
- 10 Twitter, Dr Aseem Malhotra
- 11 Journal of Virology July 13, 2020
- 12 The Independent July 23, 2020
- 13 The Guardian November 10, 2020
- 14 NPR September 14, 2020
- 15, 16 BMJ 2020;369:m2237 doi: 10.1136/bmj.m2237