The DASH diet: what to eat to lower blood pressure

Creator: Renzy
Published: 2026-06-30
Keywords: dash diet, diet for high blood pressure, lower blood pressure with diet, what to eat with high blood pressure, what is the dash diet, reduce sodium diet

Renzy

June 30, 2026 · 11 min read

Medically reviewed by Renzy

The DASH diet: what to eat to lower blood pressure — dash diet

Quick answer

The DASH diet (Dietary Approaches to Stop Hypertension) is the eating pattern with the most evidence for lowering blood pressure. Its logic: cut SODIUM (salt and ultra-processed foods) and raise potassium, magnesium and calcium by eating plenty of vegetables, fruit, wholegrains, low-fat dairy, legumes, nuts and lean protein. It can lower blood pressure within a few weeks. This is general information: if you have high blood pressure, follow your doctor's plan.

The DASH diet is not a fad: it was born from clinical research to lower blood pressure and is, today, one of the eating patterns most recommended by cardiologists around the world. The best part is that it is neither restrictive nor complicated — it looks a lot like plain good eating. This guide explains what to eat, what to cut and why it works. Important: this is general information; if you have high blood pressure, pair it with your doctor's plan.

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Why it works

The DASH diet was designed in a clinical trial to answer a specific question: which eating pattern lowers blood pressure the most? The answer has two mechanisms working together. On one hand, it CUTS sodium, which in excess makes the body retain water and raise the pressure in the vessels. On the other, it RAISES potassium, magnesium and calcium (from vegetables, fruit, legumes, nuts and low-fat dairy), minerals that help relax the blood vessels and counter the effect of sodium. The result, shown in studies, is a drop in blood pressure within a few weeks.

What to eat every day

DASH is not a list of bans, but of protagonists. The daily base:

Plenty of vegetables and fruit: the star of the plan, for their potassium and fibre. Several servings a day.
Wholegrains: wholegrain bread, pasta, brown rice, oats, quinoa.
Low-fat or semi-skimmed dairy: for its calcium.
Lean protein: fish, chicken, turkey, eggs and legumes. Limit red meat.
Unsalted nuts and seeds: a handful a day, for their magnesium and healthy fats.
Extra-virgin olive oil as the main fat.

The number-one enemy: hidden sodium

When we think of "salt" we picture the salt shaker, but most of the sodium we eat does not come from there: it comes from ULTRA-PROCESSED foods. Cured meats, aged cheeses, ready meals, canned goods, industrial bread, salty snacks and commercial sauces concentrate huge amounts of sodium we do not even notice. That is why the biggest change is not to stop adding salt to your plate, but to cut those products and cook more with real food, using spices, herbs, lemon, garlic or vinegar for flavour. Reading the label and comparing the sodium between products is one of the most useful tools.

Renzy helps you keep an eye on the sodium in what you eat and lean on real food, vegetables and fruit — the base of the DASH diet.

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Simple, sustainable and compatible

The best thing about DASH is that it is not a sacrifice diet or a temporary one: it is a way of eating you can keep for life and that overlaps almost entirely with the Mediterranean diet. You do not need special products or complicated counting — just fill your plate with vegetables, choose wholegrains, moderate red meat and, above all, cut ultra-processed foods. And if you also need to lose some weight, this pattern makes it easy, and losing weight in turn helps control blood pressure. That said: if your doctor has prescribed blood-pressure medication, DASH goes alongside it, it does not replace it.

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Key takeaways

1DASH is the eating pattern with the most evidence for lowering blood pressure.
2Key 1: cut SODIUM — less salt and, above all, fewer ultra-processed foods.
3Key 2: raise potassium, magnesium and calcium with plenty of vegetables, fruit, wholegrains, legumes and nuts.
4Lean protein and low-fat dairy; less red and processed meat.
5It can lower blood pressure within a few weeks and looks like the Mediterranean diet.
6IMPORTANT: it does not replace medication if your doctor has prescribed it.

Frequently asked questions

What is the DASH diet?▼

DASH stands for "Dietary Approaches to Stop Hypertension". It is an eating pattern designed from clinical trials to lower blood pressure: rich in vegetables, fruit, wholegrains, low-fat dairy, legumes and nuts, and low in sodium, added sugars and red/processed meat.

How much does the DASH diet lower blood pressure?▼

In the original studies, DASH lowered blood pressure significantly within a few weeks, and the effect was greater when combined with less sodium. It does not replace medication if your doctor has prescribed it, but it is one of the best-supported lifestyle interventions for high blood pressure.

Which foods should I cut?▼

Above all sodium: added salt and, especially, ultra-processed foods (cured meats, ready meals, canned goods, salty snacks, commercial sauces), which concentrate most of the sodium we eat. It is also wise to moderate added sugars, sugary drinks and red and processed meat.

Is the DASH diet good for losing weight?▼

It is not designed for weight loss, but because it is based on real, filling, minimally processed food, it usually helps you eat fewer calories naturally. And losing weight, when there is excess, lowers blood pressure on its own — so both effects add up.

How is it similar to the Mediterranean diet?▼

Very much: both prioritise vegetables, fruit, wholegrains, legumes, nuts and healthy fats, and limit ultra-processed foods and red meat. DASH puts more explicit emphasis on cutting sodium and on low-fat dairy. They are perfectly compatible.

Scientific sources

Medical disclaimer

Nutritional information and health calculations in Renzy are for informational purposes only and are based on recognized scientific sources (USDA Food Database, ESPEN, WHO). They do not replace professional advice from a qualified doctor, nutritionist, or dietitian. Always consult a health professional before changing your diet or following medical recommendations.

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