Eating well

Dairy-Free Diet

A dairy-free diet avoids milk and products made from it — needed for milk allergy or lactose intolerance, with fortified alternatives to replace calcium and iodine.

Written by Meds Global Health Clinical Team · Clinically reviewed by Dr Muhammad Suffyan, MB BS, Founder & Clinical Director · Last reviewed · How we review

What it means

A dairy-free diet excludes cow’s (and often other animals’) milk and foods made from it, such as cheese, yoghurt and butter. It is needed for cow’s milk allergy and helps some people with lactose intolerance.

Why it matters

For those who need it, avoiding dairy prevents allergic reactions or digestive symptoms. But because dairy is a major source of calcium and iodine, going dairy-free without replacing these can affect bones and thyroid health.

Practical tips

How to make it work

  • Choose calcium-fortified plant alternatives to milk, yoghurt and cheese — soya is closest in protein.
  • Check they are also fortified with iodine and, ideally, vitamin B12 and vitamin D.
  • Read labels carefully, as milk is a hidden ingredient in many processed foods.
  • Get calcium from other sources too, such as fortified foods, tinned fish with bones, tofu set with calcium, and some green vegetables.
  • For lactose intolerance, you may still tolerate small amounts or lactose-free dairy.
  • Seek dietitian advice for children on a dairy-free diet to protect growth and bone health.

Good to know. Cow’s milk allergy and lactose intolerance are different — allergy is an immune reaction that can be serious, while intolerance causes digestive symptoms. Get a proper diagnosis rather than cutting out dairy on assumption, and dietitian advice for children.

Answers

Dairy-Free Diet: frequently asked questions

What is the difference between milk allergy and lactose intolerance?

Milk allergy is an immune reaction to milk protein that can cause serious symptoms and needs strict avoidance, while lactose intolerance is difficulty digesting the sugar in milk, causing bloating and diarrhoea but not danger. They are managed differently.

How do I get enough calcium without dairy?

Use calcium-fortified plant milks and yoghurts, and include foods like calcium-set tofu, tinned fish with bones, and some green vegetables. Checking that alternatives are fortified with calcium (and iodine) is important.

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Education and reference only. This is general UK health guidance, not personal medical or dietitian advice. If you have a health condition or specific needs, check with your GP, pharmacist or a registered professional before making big changes.

Sources

Where this is drawn from

  • NHS — Eat well & Live Well
  • British Dietetic Association (BDA)
  • UK Sport / registered sports dietitians (where relevant)

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