How do I choose a diet?

There is no single best diet for everyone. The right diet depends on your health, preferences, culture and goals. Look for evidence-based patterns such as Mediterranean, DASH, plant-based or some low-carb approaches that you can follow long term, and discuss options with your doctor or dietitian.

Which diet is best for weight loss?

Many different diets can support weight loss if they create a calorie deficit and are sustainable for you. Examples include calorie deficit diets, Mediterranean-style diets, some high-protein approaches and certain low-carb patterns. Our weight loss diet and calorie deficit diet guides explain how to set targets safely.

Are keto, low-carb and intermittent fasting safe for everyone?

No. Diets like keto, very low-carb diets or intermittent fasting can be unsuitable or risky for some people, including those with certain medical conditions, pregnant or breastfeeding women, people with a history of eating disorders and some people on specific medications. Always speak to your doctor before trying them.

Can I use your calculators with these diets?

Yes. Our calorie, TDEE and calorie deficit calculators can help you estimate daily energy needs and set a calorie target. You can then apply that number within many different diet patterns (for example Mediterranean, high-protein or low-carb) using the relevant guide on this page.

Are these diet guides medical advice?

No. All guides on DietaBest are for general education only and do not replace personalised medical advice. Diet changes can affect your medications, blood sugar, blood pressure and other health conditions, so always discuss major diet changes with your doctor or a registered dietitian.

Diets: 40 evidence-based guides

This page lists all our diet guides in one place. Each guide explains what the diet is, how it works, what to eat and what to limit, and who it may suit. Use the search box or filter by category to find a diet quickly. Our guides are for education only–they do not replace advice from your doctor or dietitian. Always talk to your healthcare provider before changing your diet, especially if you have a medical condition or take medication.

Disclaimer: Content on this site is for education only and does not replace medical advice. Consult a doctor or dietitian before starting any diet.

Popular calculators

Not sure which calculator to use? Find yours in 2 clicks.

Use our tools to support your diet and weight goals:

Calorie calculator – estimate daily calories
TDEE calculator – total daily energy expenditure
Calorie deficit calculator – for weight loss
BMI calculator – body mass index

Not sure where to start?

Want to lose weight? Start with our weight loss diet and calorie deficit diet guides, and use the calorie deficit calculator.

Heart health or blood pressure? See our Mediterranean diet and DASH diet guides.

Diabetes or blood sugar? Check our diabetic diet guide and talk to your doctor or dietitian.

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Heart & health

Mediterranean diet

Plant-forward eating with olive oil, fish and vegetables. Often recommended for heart health.