Vitamin D & Sunshine – The Missing Link in UK Bone Health

Vitamin D is essential for strong bones — yet it’s one of the most common deficiencies among older adults in the UK. This vital nutrient helps the body absorb calcium, strengthens the immune system, and supports mood. But due to our limited sun exposure (especially in winter), many people over 70 are unknowingly deficient.

Why Is Vitamin D Important for Bones?

Without enough vitamin D, your body struggles to absorb calcium — even if your diet is full of it. This leads to weakened bones, faster loss of bone density, and a higher risk of fractures. Vitamin D also supports muscle function, which helps reduce the risk of falls — a major concern for those over 70.

Sunlight: Nature’s Source of Vitamin D

The body creates vitamin D when the skin is exposed to direct sunlight. However, in the UK, sunlight is only strong enough between late March and early October. During winter months, it’s nearly impossible to get enough vitamin D from sunlight alone.

According to the NHS, most adults should consider taking a supplement from October to March — and those over 70 may benefit from year-round support.

How Much Do You Need?

• The NHS recommends 10 micrograms (400 IU) of vitamin D daily for most adults.
• Those at higher risk of deficiency — including people who rarely go outdoors or cover most of their skin — may need more, under GP supervision.

Top Sources of Vitamin D

Sunlight is best, but you can also get vitamin D from certain foods and supplements.

Sunlight tips:

• Expose arms and face to sunlight for 10–20 minutes a day
• Mid-morning or mid-afternoon is ideal
• No sunscreen needed for short exposure, but always avoid burning

Food sources:

• Oily fish – salmon, mackerel, sardines
• Egg yolks
• Fortified breakfast cereals
• Fortified milk and plant milks

Supplements:

• Vitamin D3 (cholecalciferol) is the most effective form
• Available over the counter in low-dose form
• Ask your GP or pharmacist before starting if you take other medication

Signs You May Be Low in Vitamin D

• Fatigue and low mood (especially in winter)
• Bone pain or muscle weakness
• Frequent colds or slow healing
• Unexplained balance issues or weakness

It’s important not to self-diagnose. A simple blood test from your GP can confirm your levels.

Can You Have Too Much Vitamin D?

Yes — high doses over time can cause calcium build-up and kidney problems. Stick to NHS guidelines unless advised otherwise by your doctor. More is not always better when it comes to supplements.

Make Vitamin D Part of Your Daily Routine

Even just 15 minutes of daylight, a supplement, and a few servings of vitamin D-rich foods each week can make a powerful difference to your bone strength and energy levels. It’s one of the easiest yet most overlooked ways to support ageing well.

Next up: Blog 5 – Fall-Proofing Your Life: Preventing Fractures with Confidence