Omega-3s help regulate immune response and dampen excessive inflammation
Con la llegada del frío, el cuerpo humano enfrenta cada año la misma prueba: los virus respiratorios que circulan cuando bajan las temperaturas. La ciencia nutricional señala al salmón —rico en omega-3, vitamina D y B12— como un aliado silencioso que modula las defensas desde adentro, no como remedio milagroso, sino como parte de una arquitectura cotidiana de resiliencia. Lo que comemos, cómo dormimos y cómo gestionamos el estrés no son gestos aislados, sino capas de un mismo escudo.
- La temporada de resfriados ya está aquí, y con ella la presión de no caer enfermo en semanas que no perdonan el tiempo perdido.
- El virus del resfriado se propaga con una facilidad inquietante: superficies contaminadas, gotículas en el aire, manos que tocan ojos y boca sin pensarlo.
- La nutricionista Sara Vives propone comer salmón dos o tres veces por semana, combinado con verduras ricas en vitamina C, probióticos y legumbres, para potenciar la respuesta inmune desde la mesa.
- El sueño de siete a ocho horas, el ejercicio moderado y el control del estrés crónico resultan ser tan determinantes como cualquier alimento, según el enfoque preventivo recomendado.
- La propuesta no es una solución única sino un sistema: hábitos aparentemente mundanos que, sumados, marcan la diferencia entre una temporada sana y semanas de recuperación evitables.
Con los primeros catarros del año llega también el consejo de siempre: abrígate, lávate las manos, duerme bien. Pero los nutricionistas apuntan a una estrategia más silenciosa que empieza en el plato. El salmón, según explica la nutricionista Sara Vives, no solo alimenta: fortalece activamente las defensas frente a los virus respiratorios que proliferan en invierno.
Su poder reside en los ácidos grasos omega-3 —EPA y DHA—, que regulan la respuesta inmune y frenan la inflamación excesiva que hace tan incómodo un resfriado. A eso se suman la vitamina D, esencial para activar las funciones centrales del sistema inmunitario, y la vitamina B12, necesaria para la producción de glóbulos rojos. La recomendación es concreta: consumirlo dos o tres veces por semana, combinado con verduras ricas en vitamina C como brócoli o pimientos, alimentos probióticos como yogur natural o kéfir, y legumbres o cereales integrales que aportan zinc.
Pero la alimentación no lo es todo. El resfriado común, aunque generalmente leve, puede arruinar días enteros. La higiene de manos —con agua y jabón durante al menos veinte segundos— sigue siendo la medida más eficaz, dado que el virus se transmite por contacto con superficies y por gotículas respiratorias. Evitar tocarse la cara reduce significativamente el riesgo de infección.
Dormir entre siete y ocho horas no es un lujo sino un requisito de mantenimiento: la privación crónica de sueño debilita la inmunidad de forma medible. El ejercicio moderado y la gestión del estrés —a través de la meditación, el yoga o simplemente actividades placenteras— completan un enfoque que no depende de ningún elemento por separado, sino de todos actuando a la vez. Una arquitectura discreta de resiliencia que, construida con constancia, puede hacer la diferencia entre pasar el invierno bien o pasarlo recuperándose.
Cold season has arrived, and with it come the first sniffles and sore throats of the year. The usual advice follows: bundle up, wash your hands, get enough sleep. But there's a quieter strategy that nutritionists say works just as well, one that starts not with prevention alone but with what you put on your plate. Salmon, it turns out, is one of those foods that does more than fill you up—it actively strengthens the body's defenses against the respiratory viruses that circulate when temperatures drop.
Sara Vives, a nutritionist who collaborates with salmon producers, explains that the fish's power lies in its omega-3 fatty acids, specifically EPA and DHA. These compounds help regulate how the immune system responds to infection, dampening the excessive inflammation that makes a cold feel so miserable while simultaneously priming the body to fight off respiratory viruses more effectively. Beyond the omega-3s, salmon delivers vitamin D, which is essential for activating the immune system's core functions, and vitamin B12, needed for red blood cell production and nervous system health—both of which play roles in how well your body can mount a defense. The recommendation is straightforward: eat salmon two to three times per week.
The versatility of salmon makes this easier than it sounds. You can air-fry it, cook it on a griddle, or roast it in the oven. The real benefit comes when you pair it thoughtfully. Serve it alongside vegetables high in vitamin C—broccoli, bell peppers, spinach—and the immune-boosting effect compounds. Add avocado, nuts, and good olive oil to a warm salmon salad, and you've built something that works. Combine it with probiotic foods like plain yogurt or kefir, and you're also supporting the gut bacteria that play an underestimated role in overall immunity. Pair it with legumes or whole grains, and you add zinc, a mineral the immune system depends on when fighting infection.
But food alone isn't the whole story. A cold is one of the world's most common illnesses, usually mild and self-limiting, yet capable of making life genuinely uncomfortable for days—congestion, sore throat, persistent cough. Prevention isn't always possible, but the risk can be substantially reduced through habits that feel almost mundane once you name them. Hand hygiene matters most: the cold virus spreads through direct contact with contaminated surfaces or through the droplets someone releases when coughing or sneezing. Washing your hands with soap and water for at least twenty seconds, several times daily, is foundational. Avoid touching your face, especially your eyes, nose, and mouth, which are the virus's primary entry points.
Sleep emerges as surprisingly powerful. Seven to eight hours per night isn't luxury—it's maintenance. Chronic sleep deprivation weakens immune response and leaves the body more vulnerable to infection. Regular moderate exercise does similar work, improving circulation and the body's defensive capacity. Stress control, too, matters in ways that feel almost invisible until you're sick. Chronic stress measurably diminishes immune function, making the body an easier target for viruses and bacteria. Meditation, yoga, or simply time spent on activities that bring pleasure can provide real protective effects.
What emerges from this is not a single solution but a layered approach: the salmon on your plate, the hours you spend sleeping, the time you take to move your body, the stress you actively manage, the hands you wash. None of these is revolutionary. Together, they form a quiet architecture of resilience that makes the difference between a season where you stay well and one where you spend weeks recovering from what should have been preventable.
Notable Quotes
Salmon is one of the most complete foods we can incorporate during this time of year, helping to modulate immune response and reduce excessive inflammation during respiratory infections— Sara Vives, nutritionist
The Hearth Conversation Another angle on the story
Why salmon specifically? There are other fish, other sources of omega-3s.
Salmon is dense with both omega-3s and vitamin D in a single food. Most fish have the omega-3s, but salmon's vitamin D content is unusual. You're getting two critical immune nutrients at once, plus B12. It's efficiency.
The article mentions pairing salmon with vitamin C foods. Is that just additive, or does something happen between them?
It's not magic, but it's not nothing either. Vitamin C supports immune cell function, and the omega-3s reduce inflammation. You're not just stacking nutrients—you're supporting different parts of the immune response simultaneously. The combination works better than either alone.
Two to three times a week seems specific. Why not daily?
Cost, sustainability, and the fact that more isn't necessarily better. Your body can only absorb and use so much. Two to three times weekly gives you consistent support without excess. It's also realistic—something people can actually maintain through a season.
The piece spends a lot of time on prevention basics—sleep, hand-washing, stress. Does that undercut the salmon argument?
No, it confirms it. Salmon isn't a substitute for sleep or hygiene. It's one piece of a system. The nutritionist isn't claiming salmon alone will keep you well. She's saying it's a key part of the foundation, alongside everything else you need to do.
What about people who don't like salmon, or can't afford it regularly?
That's a real limitation the article doesn't address. Salmon isn't cheap. Other fatty fish—mackerel, sardines, herring—have similar omega-3 profiles and are often cheaper. But the vitamin D content is lower. It's a trade-off.