Un estudio vincula la vitamina B12 y el folato con la fatiga

29 de mayo de 2026

Reportado por IA

Un nuevo estudio japonés ha relacionado las deficiencias de vitamina B12 y folato con un aumento de la fatiga y una menor motivación en adultos por lo demás sanos. La investigación examinó marcadores sanguíneos y síntomas autoinformados en cerca de 600 participantes.

Investigadores dirigidos por el profesor Hiroaki Kanouchi de la Universidad Metropolitana de Osaka analizaron los niveles sanguíneos de homocisteína, folato y vitamina B12. También evaluaron la fatiga utilizando la escala de fatiga de Chalder y una escala visual analógica, controlando factores como la edad, el sueño, la carga de trabajo y la dieta.

Study links monocyte “biological aging” in blood to emotional depression symptoms in women with and without HIV

4 de mayo de 2026 Reportado por IA Imagen generada por IA Verificado por hechos

A study of 440 participants from the Women’s Interagency HIV Study found that accelerated epigenetic aging in monocytes—an immune cell type—tracked more closely with emotional and cognitive depression symptoms such as hopelessness and loss of pleasure than with physical symptoms like fatigue. The work, published in The Journals of Gerontology: Series A, adds evidence that cell-type-specific aging measures could contribute to future biological tools to complement symptom-based depression screening, though researchers say more validation is needed before clinical use.

Study finds lower normal B12 levels tied to brain changes

A University of California San Francisco study has linked lower but still normal levels of active vitamin B12 to slower thinking and white matter damage in healthy older adults. The research, published in Annals of Neurology in 2025, suggests current guidelines may miss early neurological risks. Researchers examined 231 participants with an average age of 71.

Researchers question vitamin B12 levels and cancer links

27 de mayo de 2026 Reportado por IA

Scientists are raising new questions about the relationship between vitamin B12 and cancer risk. While deficiency has long been known to increase dangers, recent studies suggest very high levels may also play a role.

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Brain protein decline linked to aging in mice study

Review urges a shift from minimum to “optimal” protein and exercise guidance, author says

A new perspective article in Frontiers in Nutrition argues that public health advice on protein intake and physical activity is largely designed to prevent deficiency, and that many people may benefit from aiming above today’s minimum recommendations to support strength, independence and cognitive function as they age.

Low vitamin D linked to higher pain after breast cancer surgery

20 de mayo de 2026 Reportado por IA

Women with vitamin D deficiency face significantly more pain and greater opioid use following breast cancer surgery, according to new research. The study found deficient patients were three times more likely to experience moderate to severe discomfort in the first day after mastectomy.

21 de julio de 2026 01:13

Un estudio vincula la vitamina B12 y el folato con la fatiga

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