Mediterranean, DASH, and Portfolio: Proven Eating Patterns

Mediterranean, DASH, and Portfolio: Proven Eating Patterns

Medical Disclaimer

This content is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Information is based on current medical literature and clinical guidelines but may not apply to your specific situation. Individual responses vary based on personal medical history and concurrent conditions. Always consult qualified healthcare providers for medical decisions. Never delay seeking medical care based on content you’ve read. If experiencing a medical emergency, seek immediate medical attention.

These articles provide education to enhance your healthcare partnership. All treatment decisions should involve your healthcare team. Use this knowledge to have informed discussions, not replace medical care.

In Brief

Article 1 explained the biology — how food acts on the artery wall through several systems at once. This article is about what to do with that: three eating patterns that have been tested in clinical trials and shown to change cardiovascular outcomes, not just biomarkers. The Mediterranean pattern has the strongest evidence for overall protection and for people who already have heart disease or diabetes. DASH has the strongest evidence for lowering blood pressure. Portfolio has the strongest evidence for lowering LDL cholesterol through food. They overlap far more than they differ — all three are built on vegetables, fruit, whole grains, legumes, nuts, and healthy fats, with little processed food — so the right move for most people is to pick the one matched to their main concern and borrow from the others as needed. None requires perfection; the trial benefits came from people who followed these patterns most of the time, not flawlessly.

Why Patterns, Not Nutrients

For decades, nutrition research chased single nutrients — is it the fiber, the omega-3, the antioxidant? That approach kept disappointing, because that is not how eating works. You do not consume omega-3 in isolation; you eat fish with vegetables cooked in olive oil alongside whole grains, and those foods act together. The fat helps you absorb the fat-soluble vitamins in the vegetables; the fiber slows the glucose from the grains; the polyphenols in the oil work alongside the omega-3. Whole patterns capture those interactions; isolated nutrients miss them. This is the practical version of the point Article 1 made about food working on many pathways at once.

Three patterns have come out of randomized trials with the strongest evidence for protecting the heart: Mediterranean, DASH, and Portfolio. Major medical societies now give them their highest grade of recommendation — the American Heart Association, American College of Cardiology, American Diabetes Association, and American Stroke Association all endorse them as foundational therapy, not optional lifestyle advice.[1] A Class I recommendation means the evidence is strong enough that experts agree the benefit clearly outweighs the risk — the same grade given to well-established medications like statins. These patterns are treatment, supported by decades of trials measuring actual heart attacks, strokes, and deaths.

What these patterns are changing from

It helps to see the starting point. The typical American diet is not a neutral baseline these patterns improve on slightly — it differs from all three in the same direction on nearly every measure that matters for the heart. The figures below are national averages from federal surveys and dietary surveillance:

Read together, the pattern is consistent: too much sodium, added sugar, and saturated fat; far too little fiber, fruit, and vegetables. Every one of the three evidence-based patterns moves a person in the opposite direction on all six measures at once — which is why adopting any of them tends to be a larger change than people expect, and why the cardiovascular effect is correspondingly real.

The Three Patterns

Mediterranean

The shape of it: abundant vegetables, fruit, whole grains, legumes, nuts; olive oil as the main fat; fish several times a week; little red or processed meat. Strongest evidence for: overall cardiovascular protection, prevention after a heart attack, and diabetes with heart disease.

Two trials anchor it. PREDIMED randomized about 7,400 people at high cardiovascular risk to a Mediterranean diet (with extra olive oil or nuts) or a lower-fat control diet, and over roughly five years the Mediterranean groups had about 30% fewer major cardiovascular events.[2] In absolute terms that was roughly 3 fewer events per 1,000 people per year — modest for one person in one year, substantial across a population and over time. The Lyon Diet Heart Studyfollowed 605 people who had already had a heart attack; those on a Mediterranean-style diet had 14 recurrences of cardiac death or nonfatal heart attack versus 44 in the control group over about four years — roughly a 70% relative reduction, a large effect in a group whose underlying risk was high.[7]

It works for the reason Article 1 laid out: the pattern acts on all the cardiovascular pathways together. Omega-3s and polyphenols lower inflammation; the antioxidant load reduces oxidation; nitrate and healthy fats support the vessel lining; fiber and unsaturated fats improve the lipid profile; the whole profile steadies insulin. No one food does all of that — the pattern does.

DASH (Dietary Approaches to Stop Hypertension)

The shape of it: high in vegetables, fruit, whole grains, and low-fat dairy; sodium held down (under 2,300 mg, ideally closer to 1,500 mg). Strongest evidence for: lowering blood pressure, and through that, preventing stroke.

The DASH trial was a controlled feeding study in 459 adults with elevated blood pressure. In participants who had hypertension, the DASH pattern lowered systolic pressure by 11.4 mmHg and diastolic by 5.5 mmHg over the eight-week feeding period — change began within about two weeks, and the full effect built over the eight.[3] For scale: every 10 mmHg drop in systolic pressure is associated with roughly 20% fewer major cardiovascular events, 27% fewer strokes, and 28% less heart failure in the broader blood-pressure-lowering literature.[8] DASH itself measured the pressure, not the events — the event figures come from that wider evidence base — but a pressure change of this size is squarely in the range that matters. Adding tighter sodium restriction (the DASH-Sodium trial) lowered pressure further still, most in those who started highest.[9]

The mechanism is mineral rebalancing: DASH sharply raises potassium (from produce and legumes), which relaxes vessels and helps the kidneys clear sodium, while cutting the sodium that makes the body hold water and stiffens arteries — with magnesium and calcium contributing. The result is a blood-pressure drop that, in magnitude, rivals a first-line medication.

Portfolio

The shape of it: four cholesterol-lowering food groups eaten daily — plant sterols (~2 g), viscous soluble fiber (~20 g), soy protein (~25 g), and tree nuts (~30 g). Strongest evidence for: lowering LDL cholesterol through diet.

In its original controlled trial, full adherence to all four components lowered LDL cholesterol by about 29% in four weeks — for someone at an LDL of 150 mg/dL, a drop to roughly 107, a magnitude comparable to a moderate-intensity statin.[4] The honest qualifier matters: that is the size of the cholesterol change, not proven event reduction — statins carry decades of hard-outcome trials, Portfolio does not. And full adherence is demanding; in real life people typically reach 10–20% LDL reduction, which is still clinically worthwhile.

Each component works through a different route, and the effects add up: plant sterols block cholesterol absorption in the gut (~10%); viscous fiber binds bile acids so the liver pulls cholesterol from the blood to replace them (~5–10%); soy protein modestly lowers the liver’s cholesterol output (~3–5%); tree nuts contribute sterols, fiber, and unsaturated fats (~5–10%).

The three side by side

The patterns overlap heavily, but they are built around different goals. This is the quick comparison:

A few honest notes on that table. None of these is a list of forbidden foods — they work by emphasis and frequency, not prohibition, which is part of why they are sustainable. The one true “never” shared by all three is industrial trans fat (partially hydrogenated oils), for the reason Article 1 gave: it is the only fat that raises LDL and lowers HDL at once. And “low-fat dairy” is specific to DASH; the Mediterranean pattern uses dairy more sparingly and Portfolio leans on soy, so the dairy line is a real point of difference rather than a shared rule.

A note before the condition-specific sections: the three patterns share most of their foundation. What follows tailors emphasis to your main concern — but if you have more than one (most people do), skip ahead to Multiple Conditions, which combines them rather than making you choose.

Matching the Pattern to Your Condition

Coronary artery disease

If you have had a heart attack, a stent, bypass surgery, or documented coronary disease, a protective eating pattern is first-line therapy alongside your medications — the AHA gives Mediterranean (or DASH) its highest grade for both preventing first events and preventing recurrence.[1]

The emphasis: extra-virgin olive oil as the main fat (3–4 tablespoons daily), fish 2–3 times a week for omega-3s, four or more servings of vegetables daily, whole grains over refined, legumes several times a week, an ounce of nuts daily, red meat only occasionally, processed meat eliminated or rare, and sugar-sweetened drinks gone.

A few specifics for the period after an event: aim for steady, sustained adherence rather than bursts; somewhat higher protein (around 1.2–1.5 g/kg) in the first couple of months may support healing, but confirm targets with your team; if you are not eating fatty fish at least twice a week, ask your physician about omega-3 supplementation; and use the registered-dietitian visit your cardiac diagnosis almost certainly makes insurance-covered.

When diet is not enough: familial hypercholesterolemia — inherited defective LDL receptors — keeps cholesterol high from birth, and diet adds only modest further lowering, so statin therapy is nearly always required. That is biology, not dietary failure; food and medication work together. Pattern: Mediterranean.

Hypertension

DASH has the strongest evidence of any diet for lowering blood pressure, and the 2017 ACC/AHA hypertension guideline makes it first-line.[10] The reason it matters in numbers: an 11.4 mmHg systolic drop sits in the range that the broader evidence links to roughly a quarter fewer strokes and a fifth fewer major events.[3,8]

The daily shape: 4–5 servings of vegetables and 4–5 of fruit, 6–8 of whole grains, 2–3 of low-fat dairy, no more than ~6 oz of lean protein, nuts or seeds a few times a week, sodium under 2,300 mg (ideally 1,500), and potassium around 4,700 mg from food. The single most useful fact about sodium: most of it comes from processed and restaurant food, not the salt shaker — so cooking at home with fresh ingredients does more than any other change.

Three safety points that genuinely matter here:

• Chronic kidney disease: do not push up potassium without your physician’s guidance — failing kidneys cannot clear it, and a high-potassium diet can cause dangerous hyperkalemia.
• On an ACE inhibitor, ARB, or spironolactone: these already raise potassium; combining them with a high-potassium diet can push it to dangerous levels. This needs monitoring.
• On blood-pressure medication: as the diet lowers your pressure, your existing doses can become too much, causing lightheadedness or falls. Expect your physician to reassess doses, usually after 4–8 weeks. Pattern: DASH.

High LDL cholesterol

Portfolio and Mediterranean both lower LDL, through complementary routes; the 2018 ACC/AHA cholesterol guideline names dietary change — specifically plant sterols, viscous fiber, and a produce-and-fish-rich base — as foundational.[11]

The levers and their rough effects: plant sterols ~2 g/day (~10%), viscous fiber 10–25 g/day (~5–10%), soy protein ~25 g/day (~3–5%), tree nuts 1 oz/day (~5–10%), saturated fat kept low, and trans fat eliminated. If triglycerides are also high (≥150 mg/dL), the additional moves are cutting refined carbohydrate and added sugar, limiting alcohol, and increasing omega-3 fish; at a prescription-strength dose of about 4 g/day of EPA+DHA, omega-3s lower triglycerides by roughly 20–30%, though lower doses (around 2 g) do considerably less — a conversation to have with your physician rather than a supplement-aisle decision.[17]

When diet is not enough: familial hypercholesterolemia (diet adds ~10–15% but cannot reach safe levels alone); elevated Lp(a) above ~50 mg/dL (genetically set, essentially diet-unresponsive — focus the controllable risk factors hard and see a lipid specialist); and LDL above 190, which generally needs both intensive diet and medication. Pattern: Portfolio for maximum LDL focus; Mediterranean for broader protection.

Diabetes with cardiovascular disease

Cardiovascular disease causes most deaths in people with diabetes, so the pattern has to do double duty — and the Mediterranean pattern does, improving glucose control and lowering cardiovascular events at once. The ADA’s 2024 Standards endorse Mediterranean, DASH, or plant-based patterns at their strongest level.[12] Meta-analyses put the Mediterranean effect on A1c at roughly 0.3–0.5% (for an A1c of 8.0%, down to about 7.5–7.7%) on top of the cardiovascular benefit.[5]

The emphasis is the familiar one — non-starchy vegetables, whole grains in place of refined, legumes, fish, olive oil, nuts — with carbohydrate spread across meals rather than concentrated, and added sugar and refined starch minimized.

The safety point that matters most here: if you take insulin or a sulfonylurea (glipizide, glyburide, glimepiride), improving your diet will lower your glucose, and your current doses can become too strong — risking hypoglycemia, which is especially hard on a heart with established disease. Monitor more often when you start, learn the warning signs (shakiness, sweating, confusion, fast heartbeat), coordinate with your physician before big changes, and never self-adjust insulin. Pattern: Mediterranean.

Stroke prevention

Blood pressure is the single biggest modifiable driver of stroke — responsible for roughly half the risk — so the diets that lower pressure best are the ones that prevent stroke best. The 2021 AHA/ASA guideline gives Mediterranean and DASH its highest grade.[6] DASH’s 11.4 mmHg reduction sits in the range the broader evidence links to roughly a quarter fewer strokes;[3,8] the Mediterranean pattern adds the further mechanisms from Article 1 — less inflammation, better vessel function, less clotting.[2]

The emphasis is sodium down and potassium up, abundant produce, olive oil and nuts as the fat, and fish a couple of times a week. Pattern: DASH when aggressive pressure control is the priority; Mediterranean for broader stroke prevention.

Multiple Conditions: One Integrated Pattern

Most people with cardiovascular disease have more than one risk factor, and the answer is not to run three diets at once — it is to build one pattern on a Mediterranean foundation and add the targeted pieces. For the common trio of hypertension, high cholesterol, and diabetes: keep the Mediterranean base (which covers all three), hold sodium to the DASH range (1,500–2,000 mg) for the blood pressure, fold in the Portfolio pieces that fit — nuts and viscous fiber, plus one of soy or sterols — for the cholesterol, and favor whole grains with carbohydrate spread across the day for the glucose.

A day that does all of this without feeling like a regimen: oatmeal made with soy milk, blueberries, and walnuts at breakfast (fiber and soy for cholesterol, low-glycemic fruit for glucose); a large salad at lunch with chickpeas and plenty of vegetables, olive oil and lemon instead of a salted dressing (fiber, plant protein, potassium, no added sodium); grilled salmon with brown rice and broccoli at dinner (omega-3s, whole grain, potassium); Greek yogurt with berries or an apple with almonds to snack. That single day hits the blood-pressure levers (high potassium, low sodium), the cholesterol levers (viscous fiber, nuts, minimal saturated fat), and the glucose levers (whole grains, distributed carbohydrate, high fiber) on a Mediterranean base.

Putting a Pattern Into Practice

The condition sections above tell you which pattern and what to emphasize. This section is the concrete version — daily targets and a sample day for each. They share most of their structure, so once you have one, adapting to another is mostly a matter of emphasis.

Mediterranean — daily targets

Extra-virgin olive oil as the main fat (3–4 tbsp); vegetables 4+ servings; fruit 2–3; whole grains 3–6; legumes 3–4 times a week; fish 3+ times a week; nuts 1 oz daily; poultry 2–3 times a week; red meat only occasionally; wine optional and never a reason to start.

A day: Greek yogurt with berries and walnuts at breakfast; a chickpea-and-vegetable salad with olive oil and lemon plus whole-grain pita at lunch; grilled salmon with brown rice and roasted vegetables at dinner; fruit, nuts, or hummus with vegetables to snack. Serving sizes are ordinary: a cup of raw or half a cup of cooked vegetables; a palm-sized 3–4 oz of fish; an ounce of nuts (about 23 almonds or 14 walnut halves); a tablespoon of oil. Adapt freely to your taste, culture, budget, and season — this is a pattern, not a recipe.

DASH — daily targets

Vegetables 4–5 servings; fruit 4–5; whole grains 6–8; low-fat dairy 2–3; lean protein ≤6 oz; nuts/seeds a few times a week; sodium under 2,300 mg (1,500 ideal).

A day: oatmeal cooked with milk, banana, and cinnamon (no added salt); a whole-wheat sandwich with low-sodium turkey, lettuce, and tomato, with raw vegetables, yogurt, and fruit; salmon seasoned with lemon, herbs, and garlic — not salt — with brown rice, steamed broccoli, and a salad; banana with unsalted almonds to snack.

On sodium: the leverage is at the source. Choose no-salt-added canned goods, cook with fresh ingredients, flavor with herbs, lemon, vinegar, and garlic instead of salt, read labels (sodium varies enormously between brands), limit takeout, and rinse canned beans to drop their sodium by roughly 40%. Taste adapts over 6–8 weeks — food that seems bland at first comes to taste normal, and old salty favorites start to taste like too much.

Portfolio — the four components

Plant sterols ~2 g (fortified foods or supplements); viscous fiber ~20 g (oat bran, psyllium, barley, legumes, apples, citrus); soy protein ~25 g (tofu, tempeh, edamame, soy milk); tree nuts 1 oz. Combined and fully adhered to, these reach the ~25–30% LDL reduction above; the fiber target is the hard part.

Reaching 20 g of viscous fiber usually takes a supplement: oat bran (⅓ cup) ~5 g, psyllium (1 tbsp) ~5 g, legumes (½ cup) 3–4 g, a piece of fruit 1–2 g. Most people add psyllium, starting at a teaspoon and building up with plenty of water to avoid GI discomfort.

The sustainable version: full Portfolio is hard to maintain. A realistic approach is to always include the easy, high-value pieces — an ounce of nuts and viscous fiber from oats, beans, and psyllium daily — and add soy or sterols when they fit. That typically lands around 15–20% LDL reduction with far better staying power than strict adherence that gets abandoned.

What to Expect, and When

These are population averages from trials; your own response depends on baseline diet, genetics, medications, and how consistently you stick with it.

Two things worth holding onto. First, weight loss is not required for the benefit — the major trials reduced events independent of weight change, so judge progress by your pattern and your numbers, not only the scale. Second, medications will likely need adjusting as your risk factors improve: blood-pressure doses may become too strong (lightheadedness is the signal), diabetes doses may risk hypoglycemia, and statins generally continue while diet adds further LDL lowering. None of this is self-managed — it is a reason to stay in contact with your physician, not to change doses on your own.

Common Questions

Do I have to be perfect? No — and this is the most important thing to absorb. PREDIMED’s participants did not eat perfectly, and still cut events by about 30%. What you eat most of the time, over weeks and months, is what matters; a single meal neither earns nor undoes anything.

What if I don’t eat fish? The pattern still works. Lean on plant omega-3 sources (walnuts, ground flaxseed, chia) and consider an algae-based omega-3 supplement — algae is where fish get theirs in the first place. Increase legumes and poultry for protein. Many trial participants did not hit every fish recommendation and still benefited.

Are these diets expensive? Not inherently. The costly items have cheap equivalents: canned salmon and sardines match fresh fish for omega-3s, nuts bought in bulk and dried legumes are among the cheapest protein anywhere, and frozen produce keeps the nutrients at lower cost. The patterns also cut spending on processed food, soft drinks, and takeout, which often offsets the rest.

Allergies and restrictions? All three adapt. Tree-nut allergy: use seeds, olive oil, and avocado. Fish allergy: plant omega-3s plus an algae supplement. Dairy intolerance: lactose-free or fortified non-dairy with attention to calcium and vitamin D. Gluten: naturally gluten-free whole grains (brown rice, quinoa, certified oats, buckwheat). Soy allergy: in Portfolio, lean on nuts, fiber, and sterols and skip the soy component.

Coffee? Moderate intake (3–4 cups) is broadly neutral or mildly favorable, and coffee’s polyphenols may help a little. One caveat: unfiltered coffee (French press, espresso) contains compounds that raise LDL; filtered coffee does not. Skip the sugar and high-calorie creamers, which undo the point.

Getting Started

You do not need to overhaul everything at once. Pick two or three of these for the first week: switch your cooking fat to extra-virgin olive oil; add a vegetable to a meal that has none; eat fish once (canned counts and is cheap); swap one refined grain for a whole one; keep nuts visible so they beat the chips; read the sodium label on three things you buy regularly. Add one change a week after that. The aim is a permanent shift in pattern, not a temporary diet — and, as PREDIMED showed, consistent-but-imperfect is enough to move the risk.

The Bottom Line

Three eating patterns have earned the highest grade of recommendation from every major cardiology and diabetes society, because randomized trials show they reduce real events, not just numbers on a lab report. Match the pattern to your main concern — Mediterranean for overall protection and for heart disease or diabetes, DASH for blood pressure and stroke, Portfolio for LDL — and borrow across them if you have more than one concern, which most people do. They share far more than they differ: vegetables, fruit, whole grains, legumes, nuts, healthy fats, fish, and little processed food. The benefit does not require perfection or weight loss, and it works alongside medication rather than instead of it. The next step is the practical one of building the pattern into a life you actually live — which is what the rest of this series is for.

What Comes Next

Article 3 goes one level down, into the macronutrients themselves — which fats, proteins, and carbohydrates protect the heart and why, with evidence-based targets for each.

Key Terms

Mediterranean diet: An eating pattern built on vegetables, fruit, whole grains, legumes, nuts, olive oil, and fish, with little red or processed meat; the strongest trial evidence for overall cardiovascular protection.[2,7]

DASH (Dietary Approaches to Stop Hypertension): A pattern high in produce, whole grains, and low-fat dairy with restricted sodium, designed to lower blood pressure; strongest evidence for hypertension and stroke prevention.[3]

Portfolio diet: A pattern combining four cholesterol-lowering food groups — plant sterols, viscous fiber, soy protein, and tree nuts — for maximum dietary LDL reduction.[4]

Class I recommendation: The highest grade in clinical guidelines, meaning the evidence is strong enough that benefit clearly outweighs risk — the grade also given to well-established medications.[1]

Plant sterols: Plant compounds that block cholesterol absorption in the gut, lowering LDL by roughly 10% at about 2 g/day.[4]

Viscous (soluble) fiber: Fiber from oats, psyllium, barley, and legumes that binds bile acids and lowers LDL by prompting the liver to draw cholesterol from the blood.[4]

Familial hypercholesterolemia: An inherited defect in LDL clearance that keeps cholesterol high despite excellent diet, requiring medication.

Lipoprotein(a) / Lp(a): An LDL-like particle set largely by genetics and minimally responsive to diet; an independent cardiovascular risk factor.

Hyperkalemia: Dangerously high blood potassium — a risk when high-potassium eating combines with kidney impairment or potassium-raising medications (ACE inhibitors, ARBs, spironolactone).

References

1. Lichtenstein AH, Appel LJ, Vadiveloo M, et al. 2021 Dietary Guidance to Improve Cardiovascular Health: A Scientific Statement From the American Heart Association. Circulation. 2021;144(23):e472-e487.
2. Estruch R, Ros E, Salas-Salvadó J, et al. Primary Prevention of Cardiovascular Disease with a Mediterranean Diet Supplemented with Extra-Virgin Olive Oil or Nuts. N Engl J Med. 2018;378(25):e34.
3. Appel LJ, Moore TJ, Obarzanek E, et al. A clinical trial of the effects of dietary patterns on blood pressure. DASH Collaborative Research Group. N Engl J Med. 1997;336(16):1117-1124.
4. Jenkins DJ, Kendall CW, Marchie A, et al. Effects of a dietary portfolio of cholesterol-lowering foods vs lovastatin on serum lipids and C-reactive protein. JAMA. 2003;290(4):502-510.
5. Esposito K, Maiorino MI, Bellastella G, Chiodini P, Panagiotakos D, Giugliano D. A journey into a Mediterranean diet and type 2 diabetes: a systematic review with meta-analyses. BMJ Open. 2015;5(8):e008222.
6. Kleindorfer DO, Towfighi A, Chaturvedi S, et al. 2021 Guideline for the Prevention of Stroke in Patients With Stroke and Transient Ischemic Attack: A Guideline From the American Heart Association/American Stroke Association. Stroke. 2021;52(7):e364-e467.
7. de Lorgeril M, Salen P, Martin JL, Monjaud I, Delaye J, Mamelle N. Mediterranean diet, traditional risk factors, and the rate of cardiovascular complications after myocardial infarction: final report of the Lyon Diet Heart Study. Circulation. 1999;99(6):779-785.
8. Ettehad D, Emdin CA, Kiran A, et al. Blood pressure lowering for prevention of cardiovascular disease and death: a systematic review and meta-analysis. Lancet. 2016;387(10022):957-967.
9. Sacks FM, Svetkey LP, Vollmer WM, et al. Effects on blood pressure of reduced dietary sodium and the Dietary Approaches to Stop Hypertension (DASH) diet. DASH-Sodium Collaborative Research Group. N Engl J Med.2001;344(1):3-10.
10. Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults. J Am Coll Cardiol. 2018;71(19):e127-e248.
11. Grundy SM, Stone NJ, Bailey AL, et al. 2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Blood Cholesterol. Circulation. 2019;139(25):e1082-e1143.
12. American Diabetes Association Professional Practice Committee. 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes—2024. Diabetes Care. 2024;47(Suppl 1):S77-S110.
13. U.S. Department of Agriculture and U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2020–2025. 9th ed. December 2020. Average US sodium intake ~3,400 mg/day; NHANES median ~3,200–3,400 mg/day (Jackson SL, et al. Trends in Dietary Sodium Intake, NHANES 1999–2016.).
14. Bowman SA, Clemens JC. Saturated Fat and Food Intakes of Adults: What We Eat in America, NHANES 2017–2018. USDA FSRG Dietary Data Brief No. 43, May 2022. Mean saturated fat ~11–12% of calories (NHANES 2017–March 2020: 11.9%); only ~one-third of adults meet the <10% limit, with non-meeters averaging 13.9%. Added sugars ~13% of calories per WWEIA/NHANES (USDA FSRG Brief No. 35, April 2021).
15. U.S. Department of Agriculture, Agricultural Research Service. Fiber Intake of the U.S. Population: What We Eat in America, NHANES. FSRG Dietary Data Brief. Mean dietary fiber intake ~16 g/day (males ~18 g, females ~15 g) versus the 25–38 g/day recommended; only ~5% of the population meets the target (Quagliani D, Felt-Gunderson P. Closing America’s Fiber Intake Gap. Am J Lifestyle Med. 2017;11(1):80-85).
16. Lee SH, Moore LV, Park S, Harris DM, Blanck HM. Adults Meeting Fruit and Vegetable Intake Recommendations — United States, 2019. MMWR Morb Mortal Wkly Rep. 2022;71(1):1-9. (12.3% met fruit, 10.0% met vegetable recommendations.)
17. Skulas-Ray AC, Wilson PWF, Harris WS, et al. Omega-3 Fatty Acids for the Management of Hypertriglyceridemia: A Science Advisory From the American Heart Association. Circulation. 2019;140(12):e673-e691. (4 g/day prescription EPA+DHA lowers triglycerides ~20–30%; the 2 g dose yields ~11–15%.)

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