NutridaniiMx

04/09/2026

📚 No todas las bases de datos bibliográficas tienen el mismo peso académico

Aunque distintas plataformas permiten localizar literatura científica, sus criterios de selección, cobertura, alcance y funciones no son equivalentes. Comprender estas diferencias es fundamental para interpretar correctamente la presencia de una revista en una base de datos y tomar mejores decisiones al publicar, investigar o evaluar producción académica.

• Web of Science (WoS) y Scopus son referentes internacionales ampliamente utilizados para la indización y evaluación de publicaciones científicas.

• Dimensions y DOAJ tienen alcance global y multidisciplinario, aunque operan con enfoques y criterios distintos.

• SciELO, Redalyc, Latindex y Dialnet tienen especial relevancia para la producción científica regional e iberoamericana.

• Google Scholar es una herramienta muy útil para localizar literatura y observar visibilidad académica, pero no debe considerarse equivalente a una base de datos selectiva como WoS o Scopus.

• La clave no está únicamente en que una revista esté “indizada”, sino en conocer dónde lo está y qué implica realmente esa indización.

Fuente, en el primer comentario👇

03/09/2026

Se vienen los tiempos difíciles 🥲

03/09/2026

02/09/2026

🥩 Para los amantes de la carne: esto es lo que dice la evidencia.

No se trata de demonizar alimentos, pero sí de conocer el riesgo.
Un metaanálisis de 60 estudios prospectivos encontró que un mayor consumo de carne roja se asoció con:
🔺 15% mayor riesgo de cáncer colorrectal
🔺 22% mayor riesgo de cáncer de colon
🔺 22% mayor riesgo de cáncer de recto

Y la señal es aún más consistente con las carnes procesadas, asociadas con 21% mayor riesgo de cáncer colorrectal.
Esto no significa que comer carne roja ocasionalmente cause cáncer: hablamos de una asociación observacional, especialmente relevante con consumos elevados y carnes procesadas.
El mensaje no es “nunca comas carne”, sino que la cantidad, la frecuencia y especialmente el consumo de carnes procesadas importan.

¿Qué opinas?

📚 Ref: Ungvari Z, et al. GeroScience. 2025;47:5123–5140. doi:10.1007/s11357-025-01646-1.

01/09/2026

Siento que no soy el mejor👨🏻‍⚕️🥗

Pero siempre me recuerdan, ser el mejor para ellos🩵

30/08/2026

Resistance training can reduce body fat percentage while simultaneously improving grip strength, representing an effective management strategy for sarcopenic obesity, reports a systematic review and meta-analysis in BMC Geriatrics.

Link in the comments.

29/08/2026

29/08/2026

Me dijeron “Piernas de Pollo” 🍗😥

28/08/2026

Omega-3s are often discussed as though they produce one broad “anti-inflammatory” effect. The biology is more specific than that.

The main long-chain omega-3 fatty acids, EPA and DHA, become part of the phospholipid membranes that surround cells throughout the body. DHA is especially concentrated in the brain and retina, where it contributes to membrane structure and function. ALA, the plant-derived omega-3 found in foods such as flax and walnuts, is essential too, but humans convert only small amounts of it into EPA and DHA.

The clearest clinical effect of EPA is on triglycerides. At prescription doses of about 4 g/day, omega-3 fatty acids typically lower elevated triglycerides by roughly 20–30%, with larger reductions possible when baseline triglycerides are very high. That is a pharmacologic dose and should not be confused with the amount in an ordinary fish-oil capsule or a serving of fish.

Blood pressure moves too, but much less dramatically. A dose-response meta-analysis of 71 randomized trials found that about 2–3 g/day of combined EPA and DHA reduced systolic pressure by roughly 2.6 mm Hg and diastolic pressure by about 1.6–1.8 mm Hg on average. The effect tended to be larger in people who already had hypertension or elevated blood lipids.

EPA and DHA also serve as raw material for signaling molecules involved in the regulation and resolution of inflammation. That does not mean taking fish oil simply “turns inflammation off.” The downstream response depends on dose, tissue, baseline status and the biological problem being studied.

This distinction matters because the strongest evidence for omega-3s is not equally strong across every claim attached to them. Their incorporation into cell membranes is established biology. DHA enrichment in brain and retinal tissue is well documented. Triglyceride lowering is a clear clinical effect, and blood-pressure lowering is modest but reproducible. Broader claims about cognition, mood, inflammation or cardiovascular protection depend much more heavily on the population, dose and specific EPA/DHA formulation being tested.

So omega-3s are better understood as structural and signaling fats with a few well-established measurable effects, rather than as a single-purpose supplement.

NIH Office of Dietary Supplements. Omega-3 Fatty Acids Fact Sheet.
PMID 31422671.
PMID 35647665.