Scientists have uncovered evidence suggesting that insufficient vitamin B12 and folate intake could be behind persistent tiredness and diminished drive, even among individuals who are otherwise in good health.
The research, conducted by a team under Professor Hiroaki Kanouchi at Osaka Metropolitan University's Graduate School of Human Life and Ecology, examined the connection between specific nutrient shortfalls and energy levels.
Modern life has seen chronic exhaustion become increasingly prevalent as individuals face mounting professional demands alongside reduced rest periods.
Though stress and inadequate sleep are frequently blamed for fatigue, the Japanese investigators believe dietary factors warrant greater consideration.
Dietary factors may warrant bigger consideration for stress and fatigue
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Approximately 600 healthy Japanese adults participated in the investigation, with researchers analysing their blood for homocysteine, folate, and vitamin B12 concentrations.
Participants' energy and drive were assessed through the Chalder Fatigue Scale questionnaire alongside a Visual Analog Scale.
Those displaying raised homocysteine readings consistently showed depleted levels of both vitamins, irrespective of whether they were male or female.
When examining the sexes independently, while accounting for variables such as age, sleep patterns, workload, and dietary habits, distinct patterns emerged.
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Men with elevated homocysteine were more prone to experiencing physical exhaustion.
Women with higher levels of this blood marker, meanwhile, demonstrated notably reduced motivation.
Professor Kanouchi described the research as potentially groundbreaking, stating: "This suggested relationship between vitamin B12, folate, and fatigue in healthy individuals may represent the first report of its kind."
He noted that homocysteine has traditionally been monitored in connection with cardiovascular disease, dementia, and bone fractures.
"However, our findings suggest that attention should also be paid to fatigue and motivation in the future," the professor added.
Maintaining a well-balanced diet is essential
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His guidance for maintaining healthy energy levels was straightforward: "To prevent an increase in homocysteine levels, it is important to avoid deficiencies in vitamin B12 and folate.
"Maintaining a well-balanced diet on a daily basis is essential."
The study has been published in the journal Nutrients.
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