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What are the key foods that will best ensure the health of your
heart and blood circulation? A recent major study reported in
the British Medical Journal (see the reference in the 'total
combined effect' section) found that by eating the following six
'super-foods' on a daily basis you can reduce your risk of
cardiovascular disease by a staggering 75%! Considering
that cardiovascular diseases are the no.1 cause of death and
disability in most Western societies, it is certainly worth paying
attention to this research – this is likely to have the greatest
positive impact on your health and well-being in the long run (next
to taking regular physical exercise and stopping smoking, of
course).
All the foods on the list are commonly found in food shops and
restaurants, relatively inexpensive, and easy to include in your
daily diet. And as you can see, the fruit and vegetables of
the 5-a-day and
spectrum sections are already part of
this list.
Incidentally, you'll notice that the foods listed here also make
up a large part of what is generally referred to as the 'Mediterranean
diet', thought to be among the healthiest food regimes anywhere
in the world and consequently endorsed by the likes of the
American
Heart Association. For example a typical meal consisting
of grilled fish served with
ratatouille and a side salad (drizzled perhaps with a light
dressing of lemon juice, olive oil and crushed garlic) and
accompanied by a glass of chilled white or rosé wine, followed by
some fresh fruits and almonds/nuts, ticks just about every box on
this list in one go, and gives you a whole spectrum of colours too!
The Six Daily Superfoods
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FOOD
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PORTION AND FREQUENCY
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REDUCTION IN RISK OF
CARDIOVASCULAR DISEASE
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REFERENCE SOURCE
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Wine
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150 ml (= medium glass) daily
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32% (23-41% range
within 95% confidence interval)
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Di Castelnuovo A, Rotondo S,
Iacoviello L, Donati MB, De Gaetano G. Meta-analysis of wine
and beer consumption in relation to vascular risk.
Circulation 2002;105: 2836-44
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Garlic (preferably
uncooked)
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2.5 to 3 grams (= ca. ½
clove) daily
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25% (21-27% within
95% C.I.)
The reduction in
cardiovascular disease risk results from the estimated
reduction of total cholesterol concentrations by 0.44 mmol/l
(17.1 mg/dl).
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Ackermann RT, Mulrow CD,
Ramirez G, Gardner CD, Morbidoni L, Lawrence VA. Garlic
shows promise for improving some cardiovascular risk
factors. Arch Intern Med 2001;161: 813-24
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Fruit and vegetables
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400 grams (= 14-16 oz) daily
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21% (14–27% within
95% C.I.)
The reduction in
cardiovascular disease risk results from the estimated
reduction of systolic blood pressure by 4.0 mmHg and
diastolic blood pressure by 1.5 mmHg.
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John JH, Ziebland S, Yudkin
P, Roe LS, Neil HA. Effects of fruit and vegetable
consumption on plasma antioxidant concentrations and blood
pressure: a randomised controlled trial. Lancet 2002;359:
1969-74
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Fish
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110 to 120 grams (4-5 oz)
three to four times a week
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14% (8-19% within 95%
C.I.)
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Whelton SP, He J, Whelton PK,
Muntner P. Meta-analysis of observational studies on fish
intake and coronary heart disease. Am J Cardiol 2004;93:
1119-23
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Almonds
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70 grams (= ca. ½ cup or
large handful; 2.5 oz) daily (see notes below)
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12.5% (10.5–13.5%
within 95% C.I.)
The reduction in
cardiovascular disease risk results from the estimated
reduction of total cholesterol concentrations by 0.26 mmol/l
(10 mg/dl).
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Jenkins DJ, Kendall CW,
Marchie A, Parker TL, Connelly PW, Qian W, et al. Dose
response of almonds on coronary heart disease risk factors:
blood lipids, oxidized low-density lipoproteins,
lipoprotein(a), homo-cysteine, and pulmonary nitric oxide: a
randomized, controlled, crossover trial. Circulation
2002;106: 1327-32
Sabate J, Haddad E, Tanzman JS, Jambazian P, Rajaram S.
Serum lipid response to the graduated enrichment of a step I
diet with almonds: a randomized feeding trial. Am J Clin
Nutr 2003;77: 1379-84
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Dark chocolate
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100 grams (4 oz) daily (see
cautionary notes below)
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21% (14–27% within
95% C.I.)
The reduction in
cardiovascular disease risk results from the estimated
reduction of systolic blood pressure by 5.1 mmHg and
diastolic blood pressure by 1.8 mmHg.
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Taubert D, Berkels R, Roesen
R, Klaus W. Chocolate and blood pressure in elderly
individuals with isolated systolic hypertension. JAMA
2003;290: 1029-30
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Total combined effect
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Each of the above foods as
described
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76% (63–84% within
95% C.I.)
The combined effect is
calculated by multiplication of individual reduction rates.
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Franco OH, Bonneux L, de Laet
C, Peeters A, Steyerberg EW, Mackenbach JP. The Polymeal: a
more natural, safer, and probably tastier (than the Polypill)
strategy to reduce cardiovascular disease by more than 75%
BMJ 2004;329: 1447-1450
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Notes:
- The portions shown above are the amounts calculated to
achieve the stated effect based on the studies referenced. It is
not known whether these are the optimal amounts; consuming more
fruits/vegetables and fish could have a greater beneficial
effect. The exception is wine, where exceeding the above
daily recommendation may result over time in some of the
negative effects associated with excess alcohol consumption,
which in turn may effectively cancel out the positive effects
stated here.
- Fish is included in generic terms only. You should try
to eat a mixture of both white and oily fish.
- Wine is not specified as either red or white. Various
studies have shown that both can have a positive effect,
although their effects may be slightly different.
- Almonds contain over 50% fat (admittedly it’s the ‘good
sort’, but fat nevertheless). This means that the
recommended 70 grams contains 35-40 grams of fat. Together
with the protein (25%) and carbohydrate (10%), the daily 70
grams of almonds provides over 400 kcal of energy. In fact, 70
grams of almonds is quite a large amount, around 3/4 of a
typical retail pack found in supermarkets, and you might want to
consider consuming a smaller amount. Incidentally, please
avoid salted roasted almonds, as the salt content (and in some
cases added fat) won’t do you any good. If you can find
unblanched almonds with the brown ‘skin’ on, so much the better.
- Chocolate – even high quality dark chocolate with 70% or
more cocoa solids – contains 40-50% by weight of both sugar and
fat. Therefore the recommended daily 100 grams is bound to
give you over 500 kcal of energy. Again, the 100 grams of
chocolate shown above is in practice quite a large portion, and
you might want to consider reducing it: half the amount
will probably provide you with at least some of the health
benefits while significantly reducing your calorie intake.
And if you are going to take in the calories, you might as well
go for the best quality dark chocolate you can find, and
certainly try to avoid the cheap and nasty stuff that has more
sugar than anything else.
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