🐟 Ômega-3, Ômega-6 e a Guerra Invisível Que Está Inflamando o Seu Corpo

For decades, we've heard that vegetable oils are "healthier" than butter or lard. But modern science is showing the opposite: an excess of omega-6 in the diet—especially from soybean, corn, and sunflower oils—has created a profound imbalance in our metabolism. And this imbalance is linked to chronic inflammation, obesity, migraines, cardiovascular disease, and even decreased performance. But the problem isn't just omega-6 itself. The problem is also the ratio between omega-6 and omega-3, which should be close to 1:1, as it was in ancestral diets. Today, it easily reaches 20:1. And this changes the entire biochemistry of inflammation within the body. Omega-3 has two main components: EPA and DHA. EPA is anti-inflammatory, reduces mediators such as PGE2 and LTB4, and increases resolvins. DHA is essential for the brain—it makes up about 20% of the phospholipids in the cortex and retina, improving neuronal plasticity, myelination, attention, and memory. The problem is that plant-based sources (chia, flaxseed, walnuts) offer ALA, which the body converts very poorly into EPA and DHA. In humans, the conversion rate is below 8%. In other words, to obtain real benefits, we need fatty fish (sardines, anchovies, mackerel) or adequate supplementation. And why does this matter so much? 📌 Because excessive consumption of vegetable oil even prevents EPA and DHA from being incorporated into cell membranes. Studies show that excess linoleic acid (omega-6) literally blocks the incorporation of omega-3, reducing its effectiveness—even with supplementation. 📌 In athletes and people who train, omega-3 increases protein synthesis by up to 35%, improves mTOR activation, and reduces post-workout muscle damage. 📌 In the brain, DHA promotes learning, memory, and child development. Excess heated omega-6, on the other hand, generates toxic aldehydes (such as 4-HNE) that damage neurons and impair autophagy. 📌 In metabolic health, reducing the omega-6/omega-3 ratio improves triglycerides, ApoB, oxidized LDL, and systemic inflammation. In migraines, diets rich in omega-3 and low in omega-6 reduce the frequency and intensity of attacks. 📌 In inflammatory diseases such as COPD, supplementing with EPA+DHA improves protein balance and promotes lean mass gain. And the heart? The literature is mixed, but the REDUCE-IT study showed that high doses of purified EPA reduced cardiovascular events in high-risk patients. 👉 How to correct this in practice? • Reduce industrialized seed oils. • Use natural fats such as butter, lard, and olive oil. • Consume 2–4 servings of oily fish per week or 2–4 g/day of EPA+DHA. • Prefer supplements in the form of natural triglycerides or phospholipids, of high purity and low oxidation. Your body wasn't made to live flooded with vegetable oil. Rebalancing this ratio is one of the most powerful steps to reduce inflammation, improve performance, protect the brain, and increase your longevity. ⸻ 📚 REFERENCES ALVHEIM, A. R. et al. Linoleic Acid and the Pathogenesis of Obesity. J Lipid Res, 2014. BHATT, D. L. et al. Cardiovascular Risk Reduction with Icosapent Ethyl. N Engl J Med, 2019. DI NICOLANTONIO, J.; O’KEEFE, J. H. Importance of Maintaining a Low Omega-6/Omega-3 Ratio. Open Heart, 2018. ENGELEN, M. P. K. J. et al. n-3 PUFA Supplementation and Protein Metabolism in COPD. Am J Clin Nutr, 2022. JOURIS, K. ​​H. et al. Omega-3 Supplementation and Eccentric Exercise. J Sports Sci Med, 2011. LALIA, A. Z. et al. Omega-3 and Mitochondrial Bioenergetics. Aging, 2017. MCGLORY, C. et al. Omega-3 Fatty Acids and Muscle Protein Turnover. Front Nutr, 2019. NEUBRONNER, J. et al. Long-Chain Omega-3 Bioavailability. Clin Ther, 2014. OSTERMANN, A. I. et al. Plasma Oxylipins Respond to EPA/DHA Intake. Am J Clin Nutr, 2019. RAMSDEN, C. E. et al. Dietary Alteration of n-3 and n-6 ​​Fatty Acids for Migraine. BMJ, 2021. SIMOPOULOS, A. P. Omega-6/Omega-3 Ratio and Health. Biomed Pharmacother, 2002.