Western Diets and Practices ARE Affecting Your Hormones

The Western diet is characterized greatly by a high intake of processed foods, refined sugars, unhealthy fats, and red meat– foods prevalent across the United States. “But the United States is a melting pot,” you say, “Not everyone follows the typical Western diet!” Sure. No “gotcha” moment here though— genetically modified, highly-processed, farm-raised foods are seemingly unavoidable in the U.S. That chicken in the curry you’re making? Yikes.

According to the Ballard Brief, “Over 50% of the average Americans’ diet is made up of processed foods.” [1] According to a 2024 study in relation to the Prevalence of Processed Food in Grocery Stores and a 2021 Systematic Review of Worldwide Consumption of Ultra-Processed Foods, 73% percent of the food on the grocery store shelves in America is ultra-processed and the US is currently the top-ranked country for ultra processed food consumption in the world, alongside the UK. [2] [3]

All of this is tied to an increase in metabolic and hormonal disorders, contributing to obesity, diabetes, mood disorders, and reproductive health issues. I’m sure you knew that. But, how does all this affect hormones, you might ask? Understanding the origins of this diet and its impact on health provides valuable insight into the answer to that very question.

Historical Background: The Rise of the Western Diet and Food Practices

The Western diet emerged from a combination of cultural, economic, and technological factors, shaping American eating habits over the last century. Key events in American history contributed to the rise of this diet such as industrialization post-World War II in which the U.S. saw a boom in mass production, which extended to food production. Agricultural innovations increased food availability but often at the cost of nutrient quality. Large-scale farming practices led to increased use of pesticides and chemical fertilizers, and mass production of foods like white bread, refined sugar, and canned goods became the norm.

And then here come the ‘50s: your totally average processed food boom. The post-war period also saw a rise in convenience foods—processed and packaged foods designed for quick preparation. Foods like TV dinners, sugary cereals, and canned soups became household staples. Marketing heavily promoted these foods as convenient, affordable, and modern, which solidified processed foods as a central part of American life.

1970s changes in agricultural policy under the Nixon administration led to the subsidization of commodity crops, especially corn and soy, which made it profitable to produce high-fructose corn syrup. HFCS found its way into countless processed foods and sugary drinks, leading to higher sugar consumption across the population.

In the 1980s and 1990s, there was a rapid expansion of fast-food chains, both within the United States and also globally. Fast food became synonymous with the Western diet, with high-calorie, high-fat, and highly processed offerings becoming easily obtainable.

And then lastly, in response to rising heart disease rates, the U.S. saw a push for low-fat diets. Many manufacturers replaced fats in processed foods with sugars and refined carbohydrates to maintain flavor. This led to an increase in sugar consumption, which later proved to have negative effects on health AND.... you guessed it... HORMONES!

WHAT NOW?

Well all these sugars and processed whatchamacallits are still very much a threat. You can’t escape the American way of eating unless you escape America. So, let’s break it down:

a. High Sugar Intake and Processed Carbohydrates.

High sugar intake, largely from added sugars and refined carbohydrates in the Western diet, has a notable impact on hormone health.

• Impact on Insulin: Frequent consumption of sugary foods and refined carbs causes rapid spikes in blood sugar, which forces the body to produce large amounts of insulin to stabilize glucose levels. Over time, this can lead to insulin resistance, a condition where the body’s cells become less responsive to insulin. Insulin resistance is a precursor to type 2 diabetes and is linked to weight gain and metabolic syndrome.‍
• Cortisol Spikes from Blood Sugar Fluctuations: When blood sugar fluctuates rapidly, the body responds by releasing cortisol, the stress hormone. Over time, these frequent cortisol spikes can disrupt the body’s natural hormonal balance, leading to symptoms such as increased appetite, weight gain, and mood swings.‍

• Disruptions in Hunger and Satiety Hormones: Excessive sugar intake can impact leptin (the “fullness” hormone) and ghrelin (the “hunger” hormone), leading to poor appetite control and overeating. This is one reason why people who consume high amounts of sugar often experience cravings and struggle with weight gain.

b. Unhealthy Fats and Their Impact on Hormones.

Unhealthy fats, including trans fats and an excess of omega-6 fatty acids, are prevalent in the Western diet, particularly in fried foods, margarine, and processed snacks.

• Inflammation and Cortisol Production: Trans fats and omega-6 fatty acids promote inflammation, which triggers cortisol production as the body tries to manage the inflammatory response. Chronically high cortisol levels can lead to conditions like adrenal fatigue, stress-related weight gain, and mood disturbances.

• Omega-3 to Omega-6 Imbalance: Traditionally, diets were balanced in omega-3 and omega-6 fats, but the Western diet has shifted toward an excess of omega-6 fatty acids, largely due to processed foods and vegetable oils. Omega-3s, which are found in foods like fish, flaxseeds, and walnuts, are critical for reducing inflammation and supporting hormone health. This imbalance can contribute to mood disorders, inflammation-related hormone disruption, and conditions like polycystic ovary syndrome (PCOS).

• Sex Hormone Imbalance: Trans fats and low-quality fats can interfere with the body’s production of estrogen, progesterone, and testosterone, leading to symptoms of hormonal imbalance. Women may experience irregular periods and weight gain, while men may face declines in testosterone, which can affect mood, energy, and muscle mass.

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c. Processed Foods and Artificial Additives.

Processed foods, a mainstay of the Western diet, often contain artificial additives, preservatives, and other chemicals that disrupt endocrine function.

• Endocrine Disruptors: Chemicals in packaging and food additives, such as BPA and phthalates, are known to mimic estrogen in the body, potentially causing hormone imbalances. These endocrine-disrupting chemicals are linked to conditions like estrogen dominance, which can contribute to weight gain, fertility issues, and an increased risk of hormone-related cancers.

• Impact on Gut Health and Hormone Metabolism: The processed food-heavy Western diet lacks fiber, which affects gut health. A healthy gut microbiome is essential for processing and metabolizing hormones, particularly estrogen. When gut health is compromised, estrogen levels can rise, leading to symptoms like bloating, mood swings, and an increased risk of hormonal disorders.

d. High Red Meat and Saturated Fat Intake.

The Western diet includes large amounts of red and processed meats, which can also contribute to hormonal issues. Who’s surprised?

• Increased Estrogen Levels: High consumption of red and processed meats is linked to higher estrogen levels. This can increase the risk of conditions such as endometriosis, PCOS, and hormone-related cancers. The saturated fats in these meats also contribute to inflammation, which exacerbates hormonal imbalances.

• Association with Insulin Resistance: Saturated fats, especially when consumed in excess, can lead to insulin resistance, affecting blood sugar regulation and triggering a cascade of hormonal imbalances that can result in fatigue, weight gain, and mood changes.

e. Nutrient Deficiency and its Effect on Thyroid and Adrenal Health.

More? The Western diet is often low in nutrient-dense foods, which leads to deficiencies in key vitamins and minerals necessary for hormone production and regulation.

• Thyroid Health: Nutrients like iodine, selenium, and zinc are essential for thyroid hormone production, but they are often lacking in the Western diet. Poor thyroid function can lead to symptoms like weight gain, fatigue, and depression.

• Adrenal Fatigue: A diet low in essential nutrients combined with the chronic stress of the Western lifestyle can lead to adrenal fatigue, where the adrenal glands struggle to maintain cortisol levels. This affects overall hormone balance and can contribute to symptoms like low energy, poor stress tolerance, and insomnia.

Basically, it’s everywhere. And, unfortunately, you can’t completely avoid it unless you move to a rural place and grow everything yourself. The American diet, shaped by historical and economic shifts over the past century, is one of the worst in the world and one of the greatest sources of hormonal imbalances. Worry not! By understanding the effects of this diet and adopting a nutrient-rich, whole-food-based approach, you can work to restore and maintain hormonal balance naturally. More on that later.