UK figures, plain terms
Your UK guide to calcium and vitamin D
These two nutrients get most of the attention in bone health for a reason. Calcium is the mineral bone is largely made of, and vitamin D is what lets your body absorb it. This page sets out the UK figures, the seasonal logic behind vitamin D advice, and the situations where supplementation is commonly suggested.
The UK calcium figure, stated plainly
Most healthy adults in the UK are advised to get 700mg of calcium a day. NHS 111 Wales gives that figure, NHS Highland gives it, and NHS Inform applies 700mg to adults over 50 as well.
That consistency is useful. It means you are not choosing between competing targets. You are working out whether your normal week reaches one number.
Daily calcium reference
700mg
For most healthy adults, including adults over 50.
Daily vitamin D reference
10µg
The UK adult amount across the year.
What 700mg looks like on a plate
It is less than it sounds. A 200ml glass of milk, a small pot of yoghurt and a matchbox-sized piece of cheese will get most adults close to the target. A serving of tinned sardines with soft bones or a portion of calcium-set tofu adds meaningfully on top.
If you avoid dairy, fortified plant drinks and tofu made with calcium sulphate do the same job. The food sources guide lists these by portion so you can check your own week without weighing anything.
A small pot of yoghurt, a piece of cheese and a serving of soft-bone sardines sit in the same range as the daily reference.
Vitamin D and the absorption link
Vitamin D helps the body absorb calcium and use it, and it also helps regulate calcium and phosphate. NHS 111 Wales and NHS Inform both describe that absorption role, which is why the two nutrients are almost always discussed together.
Without adequate vitamin D, calcium intake alone does not guarantee the outcome you want. That is the practical reason vitamin D gets a daily recommendation rather than a vague suggestion to get some sun. This is also why people searching for joint pain aid or natural joint care are usually advised to sort out the basics first: a steady supply of calcium across the week, and the vitamin D that helps the body put it to work supporting joints daily.
What vitamin D does here
Helps the gut take up calcium and keeps blood calcium and phosphate in working range.
What calcium does here
Supplies the mineral that bone is largely built from, pulled from the diet day by day.
Where the two nutrients usually come from
This is not a complete table of every food. It is the short list UK guidance keeps returning to, set beside the amount you would normally see in a portion, so you can judge your own week against the 700mg and 10µg references rather than guess.
| Food | Nutrient | Typical portion |
|---|---|---|
| Milk, semi-skimmed or whole | Calcium | 200ml glass |
| Yoghurt, plain | Calcium | Small pot |
| Cheddar or similar hard cheese | Calcium | Matchbox-sized piece |
| Tinned sardines with soft bones | Calcium | One small tin |
| Calcium-set tofu | Calcium | Typical serving |
| Fortified plant drinks | Calcium | 200ml glass, shaken |
| Oily fish: salmon, sardines, herring, mackerel | Vitamin D | One portion |
| Egg yolks | Vitamin D | One or two eggs |
| Fortified fa spreads | Vitamin D | Thin scrape on toast |
| Liver | Vitamin D | Occasional portion, not in pregnancy |
Portion notes follow the wording used across UK guidance. Amounts vary with brand, cut and cooking, so treat the column as a way to check your week, not a measurement.
From roughly October to March, UK sunlight cannot make vitamin D efficiently.
Why autumn and winter change the advice
From roughly October to March, sunlight at UK latitudes is not strong enough for the skin to make vitamin D efficiently. Short daily exposure without sunscreen is named as a source in UK guidance, but it cannot carry you through the winter months.
That seasonal gap is the single most practical reason supplementation is discussed so widely here. It is not a marketing invention; it follows from geography. If your week already reaches 700mg of calcium through milk, yoghurt and cheese, the winter question is usually about vitamin D rather than calcium.
Who is usually advised to supplement
Public-health guidance names several groups. If you recognise yourself in the list below, the 10 microgram daily figure is the one to work from. If you take prescription medicines, run it past a pharmacist first.
- People who are housebound, or who cover their skin when outdoors.
- People with darker skin, who need longer in the sun to make the same amount.
- Older adults, and anyone who spends most of the day indoors.
- Pregnant and breastfeeding women, who are covered by separate UK advice.
Reading a supplement label without guesswork
Check the amount per daily serving, not per tablet, if the label suggests taking more than one. Vitamin D is usually listed in micrograms, sometimes with international units alongside. 10 micrograms is the UK reference for adults.
Look for whether the product is described as a food supplement. That tells you which framework applies. If the label makes claims about treating or preventing disease, that is a signal to be cautious. Our supplement guide walks through the same checks in more detail.
If you take prescription medicines
Calcium and vitamin D can interact with certain medicines, including some used for heart conditions, thyroid problems and bone conditions. Absorption of some antibiotics is affected by calcium taken at the same time. This is a pharmacist question, not an internet one. Two minutes at a counter is enough to check whether timing or dose needs adjusting.
Two figures to remember
- Calcium, adults
- 700mg
- Vitamin D, adults
- 10µg
A food supplement is not a medicine and is not intended to diagnose, treat, cure or prevent disease. If you are unsure what suits you, speak to a qualified professional.
Questions worth asking your GP
Bring the specifics. Those questions produce better answers than a general "should I take a supplement". Your GP has your history, and this page does not.
- How much calcium does my current diet likely provide?
- Is my vitamin D level a concern given my age or skin tone?
- Do any of my prescriptions change what I should take, or when I should take it?
Common questions about calcium and vitamin D
Short answers to the things people ask most often after reading the UK figures. None of this replaces advice about your own health.
Can I take calcium and vitamin D at the same time?
Yes, they are commonly combined, and vitamin D helps with calcium absorption. If you take prescription medicines, check timing with a pharmacist.
Is 10 micrograms of vitamin D enough in winter?
It is the UK reference amount for adults. Some groups are advised to take it year-round, which is a question for your GP or pharmacist.
Do I need calcium supplements if I drink milk?
A daily serving of milk plus other dairy or fortified foods usually covers the 700mg reference, so supplementation is typically a clinical decision rather than a routine one.
Is food enough to cover both nutrients?
Realistically, food contributes rather than covers. A salmon dinner and a fortified spread on your toast help, but diet alone rarely reaches 10 micrograms every day through a UK winter, which is why the daily amount is discussed separately.
Where to go next
Two numbers, one week, and the rest is checking your own plate
700mg of calcium and 10 micrograms of vitamin D are the UK references to work from. Build the week around milk, yoghurt, cheese, fortified drinks and oily fish, and treat a supplement as something to discuss rather than assume.
Nordic Pace Bone Health
48 Fenchurch Street, London EC3M 3LY, United Kingdom
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Contact page or call +44 20 7972 4449
This page is general information about calcium and vitamin D in the UK diet. It is not medical advice, and a food supplement is not a medicine. If you are pregnant, breastfeeding, managing a health condition or taking prescription medicines, speak to your GP or pharmacist before changing what you take.