This is where science becomes quietly reassuring.
Vitamin D
Evidence-backed benefits:
- Supports immune function
- Helps maintain bone density
- Plays a role in mood regulation
Winter deficiency is extremely common, particularly in women. Did you know UK Government data has long shown that around 1 in 6 adults in the UK have vitamin D levels below the recommended threshold (below ~50 nmol/L).
B Vitamins (especially B6 & B12)
Evidence- backed benefits:
- Energy production
- Nervous system support
- Cognitive function
Important midlife note:
Stress, alcohol, poor sleep and ageing all increase B-vitamin demand, making Christmas and parties a perfect storm for depletion. In essence, the reason alcohol feels harder to recover from in midlife is that it draws on the very B vitamins that help us feel energised and mentally clear.
Vitamin C
Evidence-backed benefits:
- Long associated with immunity, but also:
- Supports adrenal function
- Helps the body manage stress
- Plays a role in collagen production
Vitamin C requirements increase during periods of physical or emotional stress, exactly what December and January brings with it.