A few months ago I covered a diet for dentures. This week it is a diet for those
with gout, and there are far more of you than you might imagine. If you are a
sufferer, then you join with Henry VIII, Benjamin Franklin and Thomas Jefferson.
It is indicated in around five percent of all cases of
arthritis and is present in around three to five percent of the population, with
males outnumbering women around nine to one. Afro-Americans and many Asian races
also have higher incidence than Caucasians.
Gout is, in its simplest fashion, a recurrent form of
arthritis, and which generally affects just one joint - most commonly the joint
in the big toe. This arthritis, or inflammation, occurs in association with high
uric acid levels in the blood, and is described as ‘exquisitely painful’.
It is a condition that is still being researched, and there
is still no complete agreement on the preventive treatment for this condition.
The higher the concentration of serum uric acid (SUA), the
more likely you are to get an acute attack. The ‘normal’ range for SUA is taken
as less than 0.42 mmol/L (called ‘milli moles’ per liter), but if your
concentration is 0.54 mmol/L then you are five times more likely to get gout.
Basically what happens is that with high concentrations of
uric acid it crystallizes out into the joint, leaving very sharp, needle-like
crystals crunching inside the articular surface of the joint. Very painful!
The typical gout sufferer is male in his 50’s, overweight,
with high blood pressure, carnivorous and consumes large quantities of alcohol.
Is that you?
Gout affects almost four million men in the USA. It has long
been thought that purine-rich foods and a high protein intake are risk factors,
and sufferers are advised to avoid meats, seafood, purine-rich vegetables, and
animal protein. But this advice was based more on the theory of how excess blood
uric acid can occur, rather than actual clinical studies.
One of the newer studies began on over 50,000 men from health
professions in 1986. Food-frequency questionnaires were sent out at baseline,
and in 1990 and 1994. Weight, medications, and medical conditions were recorded
every two years.
The participants were assigned to groups according to the
total intake of meat, their consumption of seafood, purine-rich vegetables,
dairy products, low-fat dairy products, total protein, and animal protein.
During the study, there were 730 new cases of gout during the
12 years of low-up. Most of them were aged 55 to 64.
When total meat consumption was analyzed, the risk of
acquiring gout was 1.41 times greater in the high meat eaters; in other words,
eating more meat was a risk factor for gout. Similarly, high seafood eaters were
1.51 times as likely to develop gout. (Grass should be fairly safe to eat!)
In contrast, gout was less common in those taking more dairy
products. Men who drank two glasses a day of skim milk, or ate a serving of
low-fat yogurt more than twice a week, halved their risk of developing gout.
In this study at least, purine-rich vegetables, and total
protein had no influence on the chances of getting gout.
This large study confirmed that a diet high in meat and
seafood increases the likelihood that a susceptible person will develop gout. It
also showed that milk proteins increase the excretion or uric acid in the urine.
So, to avoid developing gout, try to limit your intake of
meat (beef, pork, lamb, and offal) and seafood, while increasing your intake of
low-fat dairy produce (skim milk, yogurt).
This is all very important, as the long term outlook is not
good for the unrepentant gout sufferer. Constant high levels can lead to uric
acid ‘stones’ being deposited in the kidneys (producing renal problems) and even
discharging lumps (called ‘tophi’) around joints, on the forearms and even on
the outer ears. Really a most bleak and depressing future, and not one I’d like
to have.
Note too, that it is low-fat milk that is being proposed, as
high fat milk introduces the cholesterol problems again! It really is a fine
line that we must all tread!
