Nutritional deficiencies and seasonal health

Health discussions regarding seasonal transitions highlight the link between nutritional deficiencies and physical or cognitive symptoms. Early reports suggest that decreasing daylight in autumn can lead to lower Vitamin D levels, contributing to fatigue and memory issues. Deficiencies in iron and Vitamin B12 are also noted for their role in impairing oxygen transport and nervous system function, particularly in vulnerable groups such as vegetarians and older adults.

Subsequent observations expand on these risks, noting that monitoring micronutrient levels is essential before the peak viral infection season. Professionals identify a broad range of critical nutrients, including B-group vitamins, potassium, magnesium, zinc, copper, and selenium. While Vitamin D deficiency is linked to weakened immunity, B-vitamin deficiencies are associated with nervous system impacts and potential neurodegenerative risks, and iron deficiency remains a primary cause of chronic fatigue.

Recent research from Osaka Metropolitan University has further explored these connections, studying the relationship between homocysteine, folate, and vitamin B12 levels in healthy adults. The study found that higher homocysteine levels—often associated with lower folate and B12—correlated with gender-specific symptoms: women reported lower motivation, while men reported higher physical fatigue. Researchers noted that while a correlation exists, it does not prove a direct cause-and-effect relationship.

Additionally, the transition to autumn is being linked to mental well-being. Experts discuss how reduced sunlight can trigger changes in serotonin and increased melatonin production, contributing to seasonal affective disorder. These seasonal shifts are also associated with mood changes, appetite fluctuations, and depressive symptoms linked to lower vitamin D levels.