Over two decades, a large group of older American adults with diabetes or serious heart risk factors was followed as part of long-running Harvard health-professional studies, and their eating was compared against several dietary patterns. Those who most closely matched a Mediterranean-style diet, rich in olive oil, nuts, fish, vegetables, legumes, and whole grains, appeared less likely to suffer heart disease than those who followed a low-fat approach. The finding, reported here by a promotional outlet, adds weight to an old debate that has long shifted attention from how much fat we eat towar
Mediterranean Diet Linked to 21% Lower Cardiovascular Risk Than Low-Fat Diet in 20-Year U.S. Cohort Study
The quality of the fat may matter more than the amount
Mark
So what's the headline here? Mediterranean beats low-fat?
Mimi
That's the claim: a 21% lower relative risk of cardiovascular disease over 20 years, among more than 12,000 people aged 55 to 80 with diabetes or several risk factors.
Mark
And the absolute numbers?
Mimi
Estimated 20-year incidence of 28% for Mediterranean, 31% for the AHA-2020 pattern, and 36% for low-fat.
Luke
Those are modeled estimates of what happens under sustained adherence, not counts of what people actually experienced. The only raw count given is 3,469 cases overall.
Mark
Why does the food questionnaire matter?
Mimi
It was given every four years, so researchers could track how people's eating changed instead of relying on a single report.
Luke
Still self-reported, though. And this is an observational cohort. The report doesn't say how the researchers handled other differences between people, so I wouldn't read it as proof that the diet caused the difference.
Mark
The article also quotes several older pieces. Do they add anything?
Mimi
They give background on healthy fats, but they date from 2014 to 2020 and aren't about this study.
Luke
Right. And the outlet is promotional. Until someone reads the journal paper, the details are secondhand.
Der Puls
- A 21% lower relative risk of heart disease has been attributed to the Mediterranean diet, a striking figure that has stirred interest in dinner tables and health circles alike.
- The source is a promotional outlet, so the headline number has to be tested against the original journal study before anyone rearranges their kitchen around it.
- Researchers tracked more than 12,000 older adults with diabetes or multiple risk factors for 20 years, using repeated food questionnaires to follow changing eating habits.
- Estimated 20-year heart disease rates reportedly ran 28% for the Mediterranean pattern, 31% for AHA-2020 goals, and 36% for low-fat eating.
- The study's authors themselves call for more research on long-term adherence and on whether the results apply to more diverse populations, so the verdict is still open.
Over two decades, a large group of older American adults with diabetes or serious heart risk factors was followed as part of long-running Harvard health-professional studies, and their eating was compared against several dietary patterns. Those who most closely matched a Mediterranean-style diet, rich in olive oil, nuts, fish, vegetables, legumes, and whole grains, appeared less likely to suffer heart disease than those who followed a low-fat approach. The finding, reported here by a promotional outlet, adds weight to an old debate that has long shifted attention from how much fat we eat toward what kind of fat and food we choose. Its strength will ultimately rest on the original journal paper and on whether the pattern holds across more varied lives.
A new study, published in the American Journal of Clinical Nutrition, has attached a number to a question people have argued about for years: what should we eat to protect our hearts? Over twenty years, adults whose eating resembled a Mediterranean pattern were reported to have a 21% lower relative risk of cardiovascular disease than those who followed a low-fat pattern. The figure comes from Natural News, a promotional outlet, so it is best read as a secondhand account rather than the study itself.
The research drew on two long-running Harvard cohorts, the Nurses' Health Study and the Health Professionals Follow-up Study, which have followed U.S. health professionals for decades. More than 12,000 participants aged 55 to 80, all with diabetes or at least three major risk factors, were included. Their diets were recorded with food questionnaires every four years, allowing researchers to follow how eating changed over time. Heart attacks, revascularization procedures, strokes, and cardiovascular deaths were confirmed through medical records.
The modeled estimates placed 20-year heart disease incidence at 28% on the Mediterranean diet, 31% on the American Heart Association's 2020 goals, and 36% on a low-fat diet. The researchers interpreted this as evidence that the quality and source of dietary fat may matter more than its total amount. The Mediterranean pattern, with its olive oil, nuts, fish, and whole foods, is also flexible rather than restrictive, which the lead researcher suggested may make it easier to sustain.
The authors themselves noted that more work is needed on long-term adherence and on how far the findings reach across diverse populations. Read the original paper before taking the 21% figure at face value.
A study published in the American Journal of Clinical Nutrition has put a number on a long-running argument about what to eat for the sake of the heart. Over 20 years of follow-up, adults whose eating matched a Mediterranean pattern had a 21% lower relative risk of cardiovascular disease than those whose eating matched a low-fat pattern. That is the figure as relayed by Natural News, a promotional outlet, so it is worth treating as a report of the study rather than the study itself.
The data came from two Harvard-based cohorts, the Nurses' Health Study and the Health Professionals Follow-up Study, which have tracked the health and habits of U.S. health professionals for decades. From them, researchers drew more than 12,000 participants aged 55 to 80. All had diabetes or at least three major cardiovascular risk factors.
Diet was measured with validated food frequency questionnaires, given every four years from baseline. According to the report, that schedule let researchers follow changes in eating over time instead of relying on one snapshot. The analysis compared three patterns: a low-fat diet, a Mediterranean diet, and the American Heart Association's 2020 dietary goals.
The outcomes counted were nonfatal heart attack, coronary revascularization, stroke, and death from cardiovascular disease. The study authors said medical records confirmed all of them. Across the 20 years, 3,469 cases of cardiovascular disease were documented.
Using a statistical model, the researchers estimated the 20-year incidence of cardiovascular disease if someone stuck with each pattern throughout. The estimates were 36% for the low-fat diet, 31% for the AHA-2020 diet, and 28% for the Mediterranean diet. The AHA-2020 pattern also did better than low-fat, though by a smaller margin. The report says the results held when the analysis was widened to include participants without existing risk factors.
The researchers read the results as a sign that the quality and source of dietary fat matter more for long-term heart health than the total amount. The Mediterranean pattern leans on olive oil, nuts, and fish, plus vegetables, legumes, and whole grains, and limits ultra-processed foods. The lead researcher suggested its flexibility, with no strict calorie counting and no eliminated food groups, may make it easier to sustain than restrictive low-fat regimens.
The article places the findings alongside older material. It cites a meta-analysis in the same journal, via the book Diabetes Meal Planning and Nutrition for Dummies, reporting that the Mediterranean diet improves average blood glucose, raises HDL cholesterol, and lowers triglycerides. It also quotes a 2015 Alliance for Natural Health International analysis noting that a Lancet Diabetes & Endocrinology meta-analysis of 68,000 adults favored diets higher in healthy fats. Dr. Mercola, in a 2014 post, wrote that another nail had been driven into the coffin of the low-fat diet. These are background voices, not commentary on this new study.
The study authors themselves said more research is needed on long-term adherence and on how well the findings apply to diverse populations. Because this account comes from a promotional outlet, the sensible next step is to read the original journal paper before leaning on the 21% figure.
Bemerkenswerte Zitate
Further research is needed to assess long-term adherence and applicability to diverse populations.— Study authors, as reported by Natural News
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