The Health Benefits of Omega-3 and its Role in a Healthy Lifestyle: EFSA Claims
Omega-3 fatty acids are considered essential for human health, as our bodies are unable to produce them on their own and therefore must be obtained through diet. These polyunsaturated fats, found in food sources such as fatty fish, flaxseeds, walnuts, and vegetable oils, play a fundamental role in maintaining multiple physiological functions and contribute to a healthy lifestyle. The European Food Safety Authority (EFSA) has approved a series of claims related to Omega-3s, confirming the numerous health benefits that these fatty acids provide.
In this post, we will explore the health benefits of Omega-3s, supported by scientific claims recognized by EFSA, with a particular focus on promoting a healthy lifestyle, which remains at the core of the Rilevo Philosophy.
What Are Omega-3s?
Omega-3s are a group of polyunsaturated fatty acids that primarily include three variants:
- Alpha-linolenic acid (ALA): Found mainly in plant sources such as flaxseeds, chia seeds, walnuts, and vegetable oils.
- Eicosapentaenoic acid (EPA): Primarily found in fatty fish, such as salmon, mackerel, sardines, and tuna.
- Docosahexaenoic acid (DHA): Also found mainly in fatty fish, it is the main lipid component found in the brain and retina.
While ALA is an essential fatty acid that must be obtained through diet, EPA and DHA are formed from ALA, albeit in limited quantities and with inefficient conversion in the human body. These fatty acids are fundamental for many biological functions and are approved for use in food supplements, often with claims highlighting their benefits.
EFSA Claims on Omega-3s
EFSA, the European body that guarantees food safety, has issued numerous scientific claims related to Omega-3s, based on solid scientific evidence and clinical studies that confirm their positive effects on health. Let's look at some of the main recognized claims and how they relate to a healthy lifestyle.
1. Contribution to Cardiovascular Health
One of the main benefits of Omega-3s, supported by numerous scientific studies, concerns heart health. EFSA has approved the claim that the intake of EPA and DHA contributes to the normal function of the heart. The claim states:
"Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) contribute to the normal function of the heart."
Mechanism of action: Omega-3 EPA and DHA are known for their beneficial effects on the cardiovascular system. These fatty acids have the ability to reduce blood triglyceride levels, improve blood vessel function, and reduce inflammation. In addition, Omega-3s promote the balance between various types of cholesterol, lowering levels of LDL ("bad") cholesterol and increasing those of HDL ("good") cholesterol.
How it fits into a healthy lifestyle: A diet rich in Omega-3s, combined with regular physical activity and a lifestyle free of smoking and excessive alcohol, can significantly reduce the risk of cardiovascular diseases. In particular, supplementing Omega-3s in the diet can be an integral part of a preventive strategy to keep the heart healthy and reduce the risk of heart attack and stroke.
2. Improved Brain Function and Memory
Omega-3s are essential for brain health and cognitive function. EFSA has approved the claim that DHA contributes to the maintenance of normal brain function and cognitive function. The claim states:
"DHA contributes to the maintenance of normal brain function."
Mechanism of action: DHA is one of the most abundant fatty acids in the brain and cell membranes. Adequate DHA intake is important for proper brain development during childhood and for cognitive function in adulthood. DHA has been shown to play a role in protecting against age-related cognitive decline, such as in dementias, and in preventing neurodegenerative diseases such as Alzheimer's.
How it fits into a healthy lifestyle: Incorporating Omega-3s into the diet, along with regular cognitive stimulation (reading, mental games, learning), physical activity, and adequate rest, promotes improved cognitive functions and memory. A holistic approach, including nutrition, exercise, and mental care, is key to maintaining long-term brain health.
3. Eye Health
Omega-3s, particularly DHA, are also important for eye health. EFSA has recognized that DHA contributes to the maintenance of normal vision. The claim states:
"DHA contributes to the maintenance of normal vision."
Mechanism of action: DHA is a fundamental component of retinal cells, where it plays a crucial role in maintaining visual function. Studies have shown that a diet rich in Omega-3s can help prevent age-related macular degeneration (AMD), one of the leading causes of age-related blindness. In addition, Omega-3s can improve tear quality, alleviating the symptoms of dry eyes.
How it fits into a healthy lifestyle: A diet rich in Omega-3s, combined with adequate protection from UV rays and a lifestyle that includes physical activity and sufficient sleep, can help maintain good visual health even in old age. The combination of adequate nutrients and healthy habits is crucial for preserving eyesight over time.
4. Joint and Inflammatory Function
Omega-3s are known for their anti-inflammatory properties. EFSA has approved a claim that states that the intake of EPA and DHA contributes to reducing inflammation, supporting joint health. The claim states:
"Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) contribute to reducing inflammation."
Mechanism of action: EPA and DHA have anti-inflammatory effects that make them useful for managing conditions such as rheumatoid arthritis and other chronic inflammatory diseases. These fatty acids act by modulating the body's inflammatory responses, reducing levels of inflammatory cytokines in the blood, and improving immune response.
How it fits into a healthy lifestyle: Regular intake of Omega-3s, associated with physical activity that promotes joint mobility and adequate stress management, can improve joint health and reduce pain associated with inflammatory diseases. In a preventive context, Omega-3s can be an essential part of a healthy lifestyle that promotes agility and musculoskeletal well-being.
5. Support for Metabolism and Weight Control
Although there is no direct EFSA claim on the effects of Omega-3s in weight control, it is widely recognized that Omega-3s possess properties that support a healthy metabolism. A diet rich in Omega-3s can promote more balanced weight management and increased insulin sensitivity.
Mechanism of action: Omega-3s can affect the regulation of insulin levels, improving the body's metabolic response. In addition, some studies suggest that Omega-3 intake can reduce the accumulation of visceral fat, which is associated with metabolic diseases such as type 2 diabetes and cardiovascular diseases.
How it fits into a healthy lifestyle: Combining a diet rich in Omega-3s with a regular physical activity program, sufficient sleep, and stress management contributes to maintaining a healthy body weight. Omega-3s can be a valuable support in a weight control program, complementing other balanced dietary choices and healthy behaviors.