Essential fatty acids (EFA)

Essential fatty acids (EFA) are linoleic acid and linolenic acid, which are often considered "vitamins" due to their supposed necessity in the diet for life. However, this classification is a misnomer, as the body can synthesize its own unsaturated fats when not consuming these acids 1.

Research has shown that dietary deficiency of EFA in the perinatal period can have long-term effects on body weight and bone mass in rats. Specifically, a study found that rats fed an EFA-deficient diet during late gestation and lactation had increased body weight and decreased bone mineral density compared to controls 3.

On the other hand, Ray Peat argues that EFA, particularly linoleic acid and linolenic acid, are actually toxic and contribute to various degenerative conditions, including cancer, age pigment, and immunodeficiency. He suggests that these fatty acids suppress enzyme systems, characteristic of toxins, and weaken the immune system's function 4.

Danny Roddy notes that arachidonic acid, a precursor to prostaglandins, is synthesized from polyunsaturated fatty acids, including linoleic acid, which are found in vegetable oils. This process can lead to the production of biologically potent substances that may contribute to various health issues 6.

Ray Peat also emphasizes the immunosuppressive effects of unsaturated oils, particularly polyunsaturates, which can cause "acquired immunodeficiency" similar to radiation, hormone imbalance, cancer, aging, or viral infections 7.

In contrast to the conventional view of EFA as essential nutrients, Peat's work suggests that these fatty acids may be more accurately described as toxins, contributing to a range of health problems rather than promoting well-being 3.