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Diet guides

Every diet, honestly compared

What each eating pattern actually asks of you, who it suits, what the trials found — and how likely you are to still be doing it in a year.

Diets

Mediterranean
8 min read · Reviewed by a dietitian

The Mediterranean diet, 60 years on

The most studied eating pattern in the world. What four decades of trials really show about the heart and the brain.

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DASH
7 min read

DASH: still the best diet for blood pressure

Designed in a lab, proven in clinics. How it works and how to run it without counting anything.

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Low carb
12 min read · Evidence graded

Low-carb and keto: what the evidence supports

Strong short-term results, murkier long-term ones. Who genuinely benefits and who should be cautious.

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Plant-based
9 min read

Going plant-based without the deficiencies

B12, iron, iodine and omega-3 — the four things to plan for before you switch.

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Fasting
10 min read

Intermittent fasting: is timing the point?

Most trials find fasting works as well as calorie restriction — because for most people it is calorie restriction.

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Weight
11 min read · Reviewed by a clinician

Why most diets fail at month five

Weight regain is physiological, not moral. What actually predicts long-term maintenance.

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Start here

Choose a diet you can keep

Adherence beats optimisation. In head-to-head trials, the best diet is consistently the one people stick with.

  • Pick the pattern closest to how you already eat.
  • Judge a diet on year-two results, not week-two ones.
  • Beware anything eliminating a whole food group without reason.
  • Cost and cooking time are legitimate deciding factors.
  • Check with a clinician if you take medication or are pregnant.

“The comparison table saved me months. I picked DASH because it fitted my family's cooking, not because it trended.”

— Priya S., reader

How we review. Articles in Diets are checked against primary research and re-read whenever significant new evidence appears. See our editorial policy.