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LMU 143 – Revolutionizing Health with a Low-Fat Diet: Insights from Pioneering Study


LMU 143 – Revolutionizing Health with a Low-Fat Diet: Insights from Pioneering Study

Source: The Journal of Nutrition (June 2019)

Lifestyle Medicine Update (September 14, 2019)


In the ever-evolving landscape of dietary recommendations, a groundbreaking study emerged in June 2019, reshaping our understanding of nutrition and its profound impact on health. The Women’s Health Initiative Dietary Modification Trial, published in the Journal of Nutrition, unveiled a transformative revelation: the powerful influence of a low-fat diet on the well-being of postmenopausal women. This study not only offers a beacon of clarity amidst dietary confusion but also underscores the potent role that fat consumption plays in conditions like cancer, heart disease, diabetes, and obesity.

The Study that Redefined Health

The Women’s Health Initiative Dietary Modification Trial embarked on a journey to unlock the potential of dietary choices in shaping health outcomes. This extensive study involved nearly 49,000 postmenopausal women aged 50-79, whose diets initially reflected the conventional North American pattern, with at least 32% of daily calories derived from fat. These participants were divided into two groups through randomization: one group embraced a low-fat diet comprising 20% of calories from fat, while the other persisted with the traditional high-fat North American diet.

Unveiling the Outcomes: A Path to Health

Nineteen years later, the results unveiled a remarkable transformation in the health trajectories of those who embarked on the low-fat dietary journey. Notably, women adhering to the low-fat program exhibited a 16% reduced risk of succumbing to breast cancer and a 13% decreased risk of developing diabetes necessitating insulin. Furthermore, the low-fat diet was associated with a reduced risk of heart disease-related complications. The study concluded that the transition to a low-fat diet, coupled with an increased intake of vegetables, fruits, and grains, yielded tangible benefits encompassing breast cancer, coronary heart disease, and diabetes. Crucially, this shift brought about these positive changes without any adverse effects on the participants’ well-being.

Navigating the Maze of Dietary Guidance

The current nutritional landscape is rife with conflicting advice and fleeting fad diets. However, the longevity and rigor of the Women’s Health Initiative Dietary Modification Trial underscores a fundamental truth: the consumption of unhealthy fats and an excess of fat in general significantly contribute to the development of a range of health issues. This study adds to the growing body of evidence supporting the detrimental impact of dietary fat on various aspects of health.

Unlocking the Secrets of a Low-Fat Diet

Guiding individuals toward a diet comprising 20% or less of daily calories from fat is an empowering strategy with substantial health benefits. As a healthcare professional with years of experience, I’ve witnessed remarkable transformations in patients who adopted this approach. This dietary shift has consistently led to improved cholesterol levels, reduced body fat, and healthier waist circumferences. Moreover, the management of type 2 diabetes and blood sugar control is enhanced, provided that individuals also make mindful choices regarding carbohydrate and protein consumption.

Demystifying the Transition: Steps Toward a Low-Fat Diet

To embark on this transformative journey, a pivotal step involves eliminating or substantially reducing the consumption of certain foods. These culprits of excessive fat intake include:

  • Cakes, excluding Angel Food Cake due to its frosting’s high saturated fat content
  • Donuts and various pastries
  • Some muffins, which can contain excessive saturated fat
  • Multiple types of biscuits
  • Pancakes and certain preparations of French toast
  • Red meat, including beef, pork, and lamb
  • Organ meats
  • Butter and lard
  • Cream and ice cream
  • High-fat dairy products, such as cheese and yogurt
  • Foods with palm oil and coconut oil
  • Shortening
  • Some breakfast cereals
  • High-fat snacks like potato chips and certain cheeses
  • Foods containing cream sauces, tahini, or creamy dressings

Embracing Healthier Alternatives

Transitioning to a low-fat diet involves incorporating healthier fats into your meals, including:

  • Olive oil and other oils rich in monounsaturated fats
  • Avocado
  • Fish and fish oil supplements (1,000 – 3,000 mg per day)
  • Flaxseed oil
  • Nuts and olives (in moderation)
  • Peanut butter
  • Hummus made from chickpeas, sesame seed oil, olive oil, garlic, lemon juice, and salt

The Journey to Transformation: Embracing a Low-Fat Lifestyle

The path to optimal health and well-being is within reach through a low-fat diet. By adhering to a diet that limits fat consumption to 20% or less of daily calories, you can trigger significant improvements in your health profile, reduce your risk of various diseases, and positively reshape your body composition. This transformative approach encapsulates the essence of proactive wellness and has the potential to spark a profound positive change in your life.


Prentice RL, Aragaki AK, Howard BV, Chlebowski RT, Thompson CA et al. Low-fat dietary pattern among postmenopausal women influences long-term cancer, cardiovascular disease, and diabetes outcomes. The Journal of Nutrition. 2019. 149 (9):1565-1574. [](

Eat Smart, Live Well, Look Great,

Dr. Meschino

Dr. James Meschino


Dr. James Meschino, DC, MS, ROHP, is an educator, author, and researcher having lectured to thousands of healthcare professionals across North America. He holds a Master’s Degree in Science with specialties in human nutrition and biology and is recognized as an expert in the field of nutrition, anti-aging, fitness, and wellness as well as the author of numerous books.

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