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Head of the Oils and Fats Department at the Food Industries and Nutrition Research Institute, National Research Centre.
If a luxury car owner only uses the best oils in its engine, never compromises on maintenance, and strictly adheres to manufacturer instructions to preserve its efficiency and lifespan, then this level of awareness should be even more pronounced when it comes to our bodies. They are more precious than any machine, more complex than any engine, and more valuable than anything we possess.
The heart, brain, liver, and other vital organs do not operate randomly and cannot endure prolonged neglect. Instead, they require careful selection of what we nourish them with, and a precise understanding of the oils and fats that enter them. Thus, discussions about fats are no longer solely about weight gain, but rather about the body's internal maintenance and the quality of the fuel that impacts overall health, energy, and life efficiency.
Fats have often been reduced in the public consciousness to a single image: weight gain, a concerning number in a blood test, or a convenient scapegoat for food whenever one's health balance is disrupted. However, the scientific reality is far more expansive. Fats are not merely a burden stored beneath the skin; they are an integral part of life's very structure. They contribute to cell formation, supply the body with energy, support nerves and the brain, and aid in the absorption of fat-soluble vitamins. Furthermore, they are linked to precise functions involving hormones, eyes, skin, and tissue integrity.
Therefore, the more mature question isn't: Should we eliminate fats? Rather: What type of fats do we choose? How much do we consume? And within what dietary and lifestyle context do we incorporate them? This is where true understanding begins, and where nutritional culture shifts from a discourse of prohibition and fear to one of intelligent management and conscious choice.
Fats, or lipids, are not a single compound but a broad family of biological substances, each playing a distinct role. In their simplest form, they can be understood through four main categories: triglycerides, phospholipids, cholesterol, and essential fatty acids.
So, Triglycerides represent the most common form of energy storage. When the body requires quick or reserve fuel, it draws upon them as a vital reservoir. However, when their levels exceed what is needed, they transform from a beneficial asset into a metabolic burden that can strain the heart, blood vessels, and liver.
As for Phospholipids they are among the pillars of cellular structure. They are involved in forming cell membranes, the intelligent barrier that regulates the entry and exit of substances and preserves the cell's identity and function. Without this precise lipid structure, a cell cannot maintain its stability or perform its vital roles in communication, protection, and exchange.
And then there's Cholesterol which ranks third as an essential substance that should not be viewed as an absolute evil. The body requires it for cell building and the production of several vital hormones. However, the issue lies not in its presence, but in an imbalance of its levels, particularly when certain types rise in the blood in a manner that threatens arterial health.
As for Essential fatty acids, especially omega-3 and omega-6 fatty acids. These are fats the body cannot produce in sufficient quantities, so they must be obtained from food. This is where the value of dietary choice becomes apparent, as the quality of these fats is reflected not only in test results but also in the nervous, visual, hormonal, and inflammatory structures throughout the entire body.
One of the most common mistakes is viewing fats merely as a high-energy source. Yes, fats are calorie-dense, but confining them to this aspect strips the picture of most of its meaning. Fats perform roles far deeper than caloric calculation; they are building materials, absorption facilitators, and a vital operating environment for a wide range of intricate functions.
The absorption of vitamins A, D, E, and K depends on the presence of fats; they are fat-soluble vitamins. This means that impaired intake or absorption of healthy fats doesn't just affect weight, but can also impact vision, bone health, skin, neurological functions, and the balance between blood clotting and fluidity in the body.
This truth is clearly demonstrated in the relationship between fats, vitamin D, and calcium. Fats do not directly build bones, but they contribute to preparing the way for vitamin D absorption and utilization. This vitamin then plays its role in supporting calcium absorption and assisting in bone mineralization and structural maintenance. From this, it becomes clear that discussions about fats should not be confined to the language of obesity and thinness, because at their core, they are about vital metabolism and survival functions.
A distinction should be made between the role of fats when ingested and their role when applied to the skin or in topical preparations. Dietary fats enter the digestive system, where they are digested and absorbed, participating in energy production, building cell membranes, and supporting various body organs. This is their true metabolic significance.
However, for external use, such as topical oils, moisturizers, and emollients, they do not nourish the body in the same internal way, but they play a crucial role in reducing moisture loss, alleviating dryness and roughness, and supporting the integrity of the skin barrier. Thus, the picture is complete: nourishment from within, and maintenance from without, each with its own scope, limits, and function.
Cholesterol is one of the most misrepresented concepts in general health culture. The goal isn't to demonize it, but to understand it. It's an essential substance for building cells and producing certain hormones, but its harm emerges when its balance in the blood is disrupted.
This is where the common distinction between LDL and HDL. The former is typically associated with an increased likelihood of plaque buildup inside arteries if elevated, which is why it became known as "bad." The latter, however, helps transport some cholesterol away from tissues and arteries, leading people to describe it as "good." Yet, a deeper medical understanding isn't satisfied with this dual classification; the lipid profile cannot be understood in isolation from triglycerides, blood pressure, blood sugar, weight, smoking, physical activity, and genetic predisposition.
Therefore, a lipid analysis is not an isolated number, but part of a broader metabolic picture. A person might have acceptable LDL but suffer from elevated triglycerides along with increased waist circumference, lethargy, and blood sugar imbalance. In such cases, the situation is concerning despite the absence of some alarming numbers. Science does not interpret a single element in isolation from the rest of the system.
Fats are not merely fuel for the brain, but an integral part of its operational structure. Certain fatty acids, such as DHA, are notably incorporated into nerve membranes, making the quality of dietary fats a significant factor in the biological environment where the nervous system functions. This extends beyond structural building to the efficiency of nerve signal transmission, as the integrity of fatty membranes is crucial for the proper functioning of receptors, channels, and cellular signals.
Fats play a role in the body's internal regulatory language. Cholesterol is a raw material for the production of several important hormones, including some sex hormones and adrenal hormones. This means that fats are not merely substances to be stored or burned; they are part of the signaling system that regulates growth, reproduction, biological responses, and internal homeostasis.
Fats are significantly present in the retina, one of the body's most delicate and sensitive tissues. Furthermore, impaired fat absorption can impact the utilization of Vitamin A, an essential component for normal vision, especially in dim light. Nevertheless, scientific rigor must be maintained: Omega-3 is an important supportive factor for eye health, but it is not a magical solution for all vision disorders, nor does it negate the need for specialized medical evaluation.
When unhealthy fats prevail and dietary balance is disrupted, blood vessels become more vulnerable to silent deposits that can slowly accumulate until they manifest as heart or vascular disease. Thus, the value of good fats extends beyond merely improving lab results; it encompasses protecting the vascular structure itself.
The liver is the central laboratory for fat management: synthesizing, converting, regulating, and distributing them. Therefore, chronic overconsumption of refined sugars and low-quality fats, coupled with a lack of physical activity, places this vital organ under continuous stress, which can eventually impact its functions.
Fats play a crucial role in maintaining the skin barrier, reducing water loss, supporting skin smoothness, and enhancing its resistance to external factors. Regarding joints, it's important to avoid a superficial analogy; they are not directly "lubricated" by dietary fats in the same way machines are. Instead, good nutrition with balanced fats supports the integrity of the tissues and the overall environment in which the joints function.
In modern health discourse, Omega-3 is highly celebrated, which is understandable given its importance. However, it is inaccurate for this celebration to lead to a disregard for the vital role of Omega-6. Both are essential fatty acids, and both are needed by the body as part of a healthy dietary balance. The more precise message is not to eliminate Omega-6, but rather to improve the overall quality of fats, reduce trans fats, limit excessive intake of unhealthy fats, and achieve a dietary balance that doesn't turn essential components into imaginary adversaries.
Lipid imbalance can manifest both internally and externally. Internally, it might appear as impaired vision, disrupted absorption of fat-soluble vitamins, certain neurological and muscular symptoms, compromised bone health, or, in some cases, clotting disorders. Externally, it could present as dry, rough, peeling skin, and a lack of hair vitality.
The paradox, however, is that the most common lipid disorders can progress in complete silence. Cholesterol or triglycerides may rise without obvious symptoms, which is why regular laboratory testing is a crucial part of preventive maintenance, not a deferred medical luxury.
The criterion here is not fear, but vigilance. If increased waist circumference, lethargy, high blood pressure, blood sugar imbalance, smoking, or a family history of heart disease are present, then monitoring your lipid profile becomes even more crucial. The body doesn't suddenly collapse; it sends small signals that should be understood before they escalate into a crisis.
Practically, lipid analysis remains one of the most important assessment tools. In many cases, a fasting period is required before the test, especially when accurate triglyceride measurement is the focus, as guided by the doctor or laboratory and depending on the type of assessment needed.
To simplify the picture, fats in daily life can be categorized using three colors:
Smart fat management doesn't just mean changing the type of oil; it means building a complete lifestyle. Choose unsaturated fats as your foundation, make fish a regular part of your diet, incorporate nuts and seeds in moderation, and reduce ultra-processed products. Beware of the common misconception that non-fried food cannot raise fat levels; excessive consumption of sugars and refined carbohydrates can significantly raise triglycerides, even if a dish appears "low-fat" on the surface.
Additionally, incorporate regular physical activity, optimize your weight, get good sleep, and avoid smoking, because fat management doesn't reside solely within the oil bottle, but within your entire lifestyle.
Fats are neither an absolute enemy nor an absolute friend. They are a vital tool, their value determined by their type, quantity, context, and how they are managed. True awareness isn't about waging war on food, but about distinguishing between what builds and what burdens, between what supports vital function and what silently disrupts it.
Our bodies don't need panic rhetoric, but a culture of maintenance. They need an eye that knows how to choose, a hand that moderates quantity, and a mind that understands prevention begins before pain, and that the conscious consumer is the first line of defense for themselves and their family.
So, do not turn your homes into arenas for fake food, nor your bodies into testing grounds for poor-quality products. Start today with a simple yet profound triad: Awareness in choice, moderation in quantity, and consistency in follow-up. Only then will fats transform from a source of anxious concern into an understood matter managed with wisdom, not fear.
The scientific references used in developing this material: World Health Organization (WHO), Centers for Disease Control and Prevention (CDC), National Heart, Lung, and Blood Institute (NHLBI/NIH), Office of Dietary Supplements (ODS/NIH), and American Heart Association (AHA).
