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Wine and health
These questions and answers have been compiled by the Australian
Wine Research Institute who routinely receive a variety of questions
about
wine
and health
issues. For information on alcohol abuse and alcohol dependence
or alcoholism, however, please refer to the web-site of the [US]
National Institute
on Alcohol Abuse and Alcoholism (NIAAA) on: www.niaaa.nih.gov,
or the web site of the Australian Department of Health and Aged
Care on: www.health.gov.au
The Australian Wine Research Institute advocates the moderate
consumption of wine, but does not recommend that abstaining individuals
should commence consuming wine to benefit their health. Consuming
wine more than moderately increases the risk of both short- and
long-term harm to health. A-C D-M N-S T-Z
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Allergy
- I am allergic to eggs/fish/milk/nuts and their
products. I have recently noticed that there is often a
statement on the label of wine bottles and casks, which
says "fined with casein/potassium caseinate/milk/evaporated
milk/milk products/egg white/egg products/isinglass/fish
products/nut-derived tannins/nut-products and traces may
remain" Can I safely consume this wine?
Wine may be 'fined' with processing aids, which
are derived from eggs, fish, milk or nuts. The process
of fining removes protein and other impurities from the
wine, which may otherwise make the wine unstable. If the
wine is made according to good manufacturing practice,
there should be only traces of these processing aids left
in the wine. As the wine industry is unable to accurately
measure for trace levels of these processing aids at present,
Food Standards Australia New Zealand (formerly the Australia
New Zealand Food Authority) has advised that winemakers
should include a warning statement on the label as a 'duty
of care' for the consumer if they are at all uncertain
as to whether the wine may contain traces of these processing
aids.
If you have a known allergy to eggs/fish/milk/nuts and
their products, then you consume wine at your own risk,
as trace elements may be present.
Asthma
- I am an asthmatic. Can I consume wine?
If your asthma is triggered by sulphur compounds,
such as sulphur dioxide, then you should not consume wine...
If your asthma is not triggered by sulphur compounds,
then wine is unlikely to trigger an asthma attack.
-
If so, what kind of wine?
If your asthma is not triggered by sulphur dioxide,
then any kind of wine can be consumed by an asthmatic with
minimal risk of inducing an asthma attack. If you are 'sulfite-sensitive',
however, wines that contain a lower concentration of sulphur
dioxide are recommended. For example, those wines labeled
as 'organic' contain approximately 50% less sulphur dioxide.
Cask wines, which contain a higher concentration of sulphur
dioxide, should not be consumed. No wine, however, is sulphur
dioxide free', as 10–50 mg/L of sulphur dioxide is
produced naturally during the fermentation by yeast cells.
A concentration of 1–3 mg of sulphur dioxide released
from wine and inhaled will trigger an allergic reaction
in significantly sulfite-sensitive individuals.
-
How much wine can I consume per day?
If your asthma is not triggered by sulphur dioxide,
then any light to moderate amount of wine can be consumed
without triggering your asthma. If you are 'sulfite-sensitive',
even one 100 mL glass of wine, containing approximately
45–120 mg/L of sulphur dioxide, may trigger an allergic
reaction. Data from recent research undertaken by the Department
of Medicine of The University of South Australia indicates,
however, that the low concentration of sulphur dioxide
observed generally in Australian wine is not problematic
for a significant
proportion of sulfite-sensitive individuals.
Bacteria
- Bacteria is mentioned on the back label of the
wine bottle. Does this mean that I am drinking something
that is potentially harmful to my health?
No, the mention of bacteria on the back label
of a wine bottle does not mean that you are drinking something
that is potentially harmful to your health. Types of bacteria
may be naturally present in grape juice and wine: lactic
acid bacteria; and acetic acid bacteria. These bacteria
are not harmful to humans, and are also found in other
foodstuffs such as yoghurt.
Lactic acid bacteria can convert the malic acid in the
wine to lactic acid, which is referred to as malolactic
fermentation. Red and certain white wine undergoes malolactic
fermentation, which can add desirable flavours and aromas
to the wine. Lactic acid bacteria can also contribute to
off-flavours and off-odours in the wine.
Acetic acid bacteria can convert alcohol in the wine to
acetic acid, or its ester, ethylacetate. Both resultant
compounds cause characteristic off-flavours and off-odour
in the wine.
Benefits of wine to human health
- I have read that the French experience less
heart disease than other nationalities. Does any research
indicate that there are health benefits from drinking wine?
The term 'French paradox' refers to the observation
that while both the French and Americans have a diet high
in saturated fats, smoke cigarettes and exercise little-which
are all risk factors for cardiovascular disease-the French
have a significantly lower risk of cardiovascular disease
than that of the Americans; 36% compared with 75%. The
difference in risk has been attributed to the consumption
of alcohol and, in particular, red wine... The French
consume 60 L per capita of wine per year, while the Americans
only
consume 7.7 L per year. Australians, who consume 18.1 L
per capita of wine per year, have a risk of cardiovascular
disease in between that of the French and the Americans.
Recent research suggests that the regular and moderate
consumption of alcohol, and in particular wine, may reduce
your risk of cardiovascular disease by up to 50%. Furthermore,
your overall lifespan may also be significantly increased.
Moderate consumption is considered as approximately three
to four standard drinks of alcohol per day for men and
one to two for women, where a standard drink is 10 g of
alcohol or approximately 100 mL of wine. The consumption
of alcohol and wine above this moderate amount will, conversely,
increase your risk of cardiovascular and other diseases,
and hence decrease your overall lifespan.
Recent research suggests that the regular and moderate
consumption of alcohol and wine promotes both short-term
and long-term cardioprotective effects. For example, regular
consumption prolongs and maintains these short-term cardioprotective
effects on blood clotting and on the plasma concentration
of cholesterol.
Recent research also suggests that the cardioprotective
effects of wine are imparted by the alcohol component
(approximately 75% of the effects) and by the wine-specific phenolic
compounds and their polyphenolic forms (approximately 25%
of the
effects). Polyphenolic compounds, such as anthocyanins
and tannin, give wine its characteristic colour and flavour,
and red wine typically has a 200-fold greater concentration
of polyphenolic compounds than does white wine.
The Institute does not advocate or encourage current
abstainers and consumers to drink to achieve a health benefit.
Consumers should only drink wine for enjoyment.
Cardiovascular disease
- I have a heart condition. Can I consume wine?
Yes, you can consume wine in moderation, but
only if alcohol does not adversely affect the medication
that you are on for your heart condition... The consumption
of wine is not recommended, however, if you have uncontrolled
high blood pressure, but once satisfactory
control has been achieved with medication, you can resume
consuming wine in moderation.
-
If so, what kind of wine?
If alcohol does not adversely affect your medication,
any kind of wine can be consumed in moderation. Diabetics
and asthma sufferers should refer to the sections listed
elsewhere on this page.
-
How much wine can I consume per day?
-
Recent research suggests that approximately
two 100 mL glasses of wine per day for men and one for
women should not exacerbate a heart condition. From research
undertaken by the Department of Medicine at the University
of Western Australia, greater than these one or two 100
mL glasses of wine, however, can significantly increase
your blood pressure, which would, therefore, exacerbate
your heart condition.
Coeliac disease
- I have Coeliac disease. Can I consume wine?
Additives that contain gluten are not allowed
to be added to still wine and dessert wine and, therefore,
you can safely consume these products.
Australian-made sparkling wine does not contain any additives
that contain gluten, but imported sparkling wine and Champagne
may contain spirit derived from wheat grain. Therefore,
it would be prudent to consume Australian rather than imported
sparkling wines... This is the same for Australian versus
imported fortified wines. Fortified wines and sherry, however,
are also permitted to add caramel during production. Caramel,
which is additive number 150, may originate from wheat
starch and hence may contain residual gluten. This cannot
be known with any certainty as the identity and purity
specifications referred to in the [Australian] Food Standards
Code do not regulate the base grain from which the caramel
is derived, and winemakers may source caramel from different
suppliers during vintage and between vintages. Therefore,
you should avoid consuming any fortified wines and sherries
that include caramel among their list of ingredients as
shown on the back of the bottle label.
For further information on Coeliac Disease, please refer
to the web site of the Coeliac Society of Australia on: www.coeliac.org.au.
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