DASH Diet
An NIH-developed eating pattern built specifically to lower blood pressure.
How It Works
DASH stands for Dietary Approaches to Stop Hypertension. Unlike most diets on this
page, it was developed by NIH researchers specifically as a clinical intervention, not adapted from a
traditional cuisine. It works on a serving-count structure (based on a 2,000 kcal/day reference diet):
6–8 servings/day grains · 4–5 vegetables · 4–5 fruits
· 2–3 low-fat or fat-free dairy · up to 6 servings/day lean meat,
poultry, or fish · 2–3 fats/oils · 4–5 servings/week nuts, seeds, and
legumes · 5 or fewer servings/week sweets.
Sodium is the other pillar: the standard target is 2,300 mg/day or less, with a lower
target of 1,500 mg/day for greater blood pressure reduction.
The Research
Consistently ranked among the top diets for cardiovascular health, with a research base spanning controlled feeding trials to large long-term cohorts.
Original trial: Appel LJ, Moore TJ, Obarzanek E, et al. "A Clinical Trial of the Effects of Dietary Patterns on Blood Pressure," New England Journal of Medicine, 1997. A 459-person trial: after a 3-week run-in on a control diet, participants were randomized 8 weeks to the control diet, a fruits-and-vegetables diet, or the full "combination" diet (fruits, vegetables, low-fat dairy, reduced saturated and total fat) — the combination diet significantly lowered blood pressure versus control.Read the original trial →
Additional research:
Sacks FM, Svetkey LP, Vollmer WM, et al. (DASH-Sodium Collaborative Research Group). "Effects on Blood Pressure of Reduced Dietary Sodium and the Dietary Approaches to Stop Hypertension (DASH) Diet," New England Journal of Medicine, 2001. In 412 adults, lowering sodium reduced blood pressure on both a typical American diet and the DASH diet — the largest drop came from combining the DASH diet with lower sodium.
Read the DASH-Sodium trial →
Fung TT, Chiuve SE, McCullough ML, et al. "Adherence to a DASH-Style Diet and Risk of Coronary Heart Disease and Stroke in Women," Archives of Internal Medicine, 2008. In 88,517 women followed 24 years (Nurses' Health Study), higher DASH-style diet scores were associated with lower risk of coronary heart disease and stroke. This is a long-running observational cohort, not a controlled trial — it shows association, not proof of cause.
Read the cohort study →
Taylor EN, Stampfer MJ, Curhan GC. "DASH-Style Diet Associates with Reduced Risk for Kidney Stones," Journal of the American Society of Nephrology, 2009. Across roughly 240,000 combined participants from two Nurses' Health cohorts and the Health Professionals Follow-up Study, higher DASH-diet adherence was associated with a 40–45% lower risk of incident kidney stones — again observational, but a useful secondary benefit beyond blood pressure.
Read the kidney stone study →
Food Examples
Emphasized: vegetables (broccoli, spinach, carrots, sweet potatoes), fruits (apples,
bananas, berries, oranges), whole grains (brown rice, oats, whole-wheat bread), low-fat dairy (skim
milk, low-fat yogurt, part-skim mozzarella), lean protein (skinless chicken, salmon, tilapia, eggs in
moderation), and nuts/legumes (almonds, walnuts, lentils, kidney beans).
Limited: table salt, cured and deli meats, canned soups, red meat, full-fat dairy,
sugary drinks, and sweets/desserts.
A Sample Day
Breakfast: oatmeal with sliced banana and walnuts, skim milk.
Lunch: grilled chicken salad (mixed greens, tomatoes, cucumber, olive oil-and-vinegar
dressing), whole-wheat roll.
Snack: unsalted almonds and an apple.
Dinner: baked salmon, steamed broccoli, brown rice, side salad.
Evening snack: low-fat yogurt with berries.
Who It Might Suit
A strong fit for people with hypertension, prehypertension, or elevated cardiovascular risk who want a produce-and-whole-grain-forward pattern with real RCT evidence behind the blood-pressure claim. The main friction point is sodium: hitting 2,300 mg (let alone 1,500 mg) usually means reading labels and cooking more from scratch, since packaged and restaurant food runs high by default. The dairy servings may not suit anyone lactose-intolerant or vegan without substitution, and fresh produce plus lean protein can raise grocery cost and prep time versus more processed staples. DASH also isn't built as a weight-loss plan — it has no calorie-restriction mechanism of its own — so pair it with a calorie target if weight change is the goal.