Eating well

Low-Carb Diet

A low-carb diet reduces carbohydrate foods such as bread, rice and sugar in favour of protein, healthy fats and non-starchy vegetables — an approach some people use for weight or blood sugar.

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 low-carbohydrate diet limits foods high in carbohydrate, especially sugary and refined ones, and gets more energy from protein, healthy fats and lower-carb vegetables. How strict it is varies widely between approaches.

Why it matters

For some people, reducing refined carbohydrates and sugar helps with weight loss and blood sugar control, and it is one recognised option for managing type 2 diabetes under guidance. The focus should be on food quality, not just cutting carbs.

Practical tips

How to make it work

  • Cut down on sugary foods, drinks and refined carbohydrates such as white bread and pastries first.
  • Fill up on non-starchy vegetables, and include protein foods and healthy fats.
  • Choose higher-fibre, wholegrain carbohydrates in smaller portions rather than cutting all carbs.
  • Replace some carbohydrate with beans, pulses, nuts, fish and eggs.
  • Keep an eye on saturated fat — favour unsaturated fats such as olive oil, nuts and oily fish.
  • Drink plenty of water, especially in the early days.

Good to know. Very low-carb diets can cause tiredness, constipation and headaches at first. People with diabetes on medication that can cause low blood sugar should get medical advice before cutting carbohydrates, as their doses may need adjusting.

Answers

Low-Carb Diet: frequently asked questions

Can a low-carb diet help with type 2 diabetes?

For some people, yes — reducing refined carbohydrates and losing weight can improve blood sugar control and is a recognised option, but it should be done with support, especially if you take medicines that can cause low blood sugar.

Do I need to cut out all carbohydrates?

No. Cutting refined and sugary carbohydrates while keeping some higher-fibre, wholegrain options and plenty of vegetables is more balanced and sustainable than eliminating carbs entirely.

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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 Scientific Advisory Committee on Nutrition (SACN)

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