Nutrition Across the Seasons

The foods that are easy to find and enjoyable to eat change through the year. Summer brings a natural shift towards lighter meals, more salads, and fruit that doesn't need much preparation. Autumn pulls things towards root vegetables, warming grains, and storecupboard staples. These shifts are worth paying attention to - not to chase some ideal eating pattern, but because they affect the range of nutrients you're regularly consuming.

What changes between summer and autumn

In summer, longer days and warmer weather tend to encourage more time outdoors, which has a direct effect on Vitamin D levels through sun exposure. The range of fresh produce available is wide. Leafy greens, legumes, and whole grains are in good supply and relatively easy to incorporate into daily meals without much planning.

As daylight shortens through autumn, the picture changes. Sun exposure drops, and for many people in the UK - particularly those who spend most of the day indoors - Vitamin D from sunlight becomes essentially unavailable from around October onwards. The range of fresh produce narrows, and there can be a drift towards more processed convenience foods when the weather is cold and days feel short.

"Eating well in winter isn't about discipline - it's about having the right things to hand and a routine that doesn't fall apart when it's dark by four o'clock."

The role of B vitamins in energy metabolism

B vitamins - including B1 and B6 - are found across a wide range of whole foods: wholegrains, pulses, nuts, leafy vegetables, and eggs. A diet that regularly includes these foods will generally supply adequate B vitamins without supplementation. But when routines shift, travel is frequent, or cooking from scratch becomes less consistent, intake can drift. Vitamin B1 and B6 both contribute to normal energy-yielding metabolism, and B6 contributes to normal psychological function - claims authorised under Regulation (EU) No 1924/2006.

Iodine and magnesium - often overlooked

Iodine receives less attention than Vitamin D or iron, but it contributes to normal energy-yielding metabolism and normal cognitive function. It's found primarily in seafood, dairy and iodised salt. Those following plant-based diets without regular seaweed consumption may have lower dietary iodine than average. Magnesium is found in leafy greens, nuts and seeds, and wholegrains. It contributes to normal muscle function, electrolyte balance, and the reduction of tiredness and fatigue.

None of this is a case for any particular supplement or dietary regime. It's an argument for paying attention to what you're actually eating across the seasons, rather than assuming that summer habits carry forward unchanged into autumn and winter.