Psychosocial factors in the aetiology and prognosis of coronary heart disease: systematic review of prospective cohort studiesBMJ 1999; 318 doi: https://doi.org/10.1136/bmj.318.7196.1460 (Published 29 May 1999) Cite this as: BMJ 1999;318:1460
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Regional differences shows an interesting association to the Climate
September in Sweden.
In Sweden, like in many other contries, the prevalence and morbidity
of CVD diseases
differs in different regions. The 'isoterms' for morbidity, maps the
isoterms for lowest
temperature in Sweden in september 1901-1985 (ISBN 91-534-1159-5).
September then, is the month in Sweden where the apartements and ware
heating up, ventilating systems are changed from delivering only fresh
outside air to
recirculation of as much as 80% of the used air. Indoor climate then,
could be a factor if
infections contributes to inflammatory changes in the blood-vessels. This
could also be an
explanation for the effects of a low socioeconomic status on CVD diseases.
money you live in more crowded apartements. You will be more likely to get
Also, the importance of a connection to air-polution outdoors, should
be stressed. Taking
earth as the echo-system, during the warmer periods of the year, when
temperature is above zero, allow for all sorts of water-soluble pollution
to accumulate in
the athmosphere. The turning point in Sweden occurs in September, wher the
signs of night-frost shows. When water freeze in the athmosphere, it
starts falling down,
dragging water-soluble chemicals along, forming bigger particles,
collecting all kinds of
pollution from the sky to the earth.
This is the explanation why the air seems so clean in the winter, the
snow in some regions
are dark or black and also for the great pollution of the arctic regions.
The lowest incidens of IHD in Sweden is on Gotland, placed in the
Baltic sea, with only
one small city, where many work as farmers. The lowest incidens of IHD in
Europe is on
Crete (In Spili) where the incidense of myocardial infarction is close to
1% of theat in
Most factors shown to be related to CVD, could have an "infectious
(Chlamydia, viruses, ...)
Socioeconomic factors as described above and stress in a broad sence, including anxiety also affecting the
glucose metabolism in a negative way. Diabetics and people with an
glucose tolerance are more sensitive to infections.
Smoking increases the risk of beeing infected. Much more antibiotics are used per inhabitant in the "Med" countries
Sweden due to the fact that they are free to buy without a
prescription for example
People with low socioeconomic status consumes less antibiotics.
The causes for CVD is still an enigma. From history we can learn,
that the most important
measures to enhance the health of a nation, are the laws regulating food-
water-hygien. The laws for a safe air-hygien have been forgotten.
We allow air to be recirculated along with viruses indoors.
We allow the use vaccuum cleaners with unprotective filters. They
will act as
aerosol machines for any microbe. They were used with the reversation
of the air
for spreading the myxomatosis to rabbits in Australia. The Aerosol is
effective way of spreading infections, even Malaria can be
transmitted in an
We stipulate in laws how much air pigs must have during
transportation but forget
to stipulate and follow-up air-exchange in our busses transporting
scools and other places were children and adults spend the day.
I have found an interesting links that demonstrates the effects of
'air-hygien' for aquariums
where the use of UV-C radiation and filters, made unhealthy populations
Engine: Alta Vista. Search for UVC or UV-C
Also Riley and his work should become more known:
-MM- Air Conditioning */MT/ST Air Microbiology * Respiratory Tract
Respiratory Tract Infections PC/*TM Ultraviolet Rays
-TI- Indoor spread of respiratory infection by recirculation of air.
-DP- 1979 Sep-Oct
-PT- JOURNAL ARTICLE
-AB- Stimulated by an outbreak of measles that was spread throughout
a school by the ventilating
system, we looked into the possibility of preventing this hazard in air
conditioned buildings. The
amount of air recirculated by air conditioning systems increases as the
between indoor and outdoor air increases and often exceeds 70 per cent.
Germicidal u.v. radiation in
central supply ducts seems almost ideally suited for disinfecting
recirculated air, being effective,
safe, and cheap. The effectiveness of disinfecting recirculated air in
blocking person to person
transmission of airborne infection can be predicted to be great at the
beginning of a potential
outbreak and negligible during an established epidemic. Infection
introduced by the air conditioning
process, recently implicated in causing Legionnaires' Disease, might also
prevented. Air disinfection would supplement immunization in the
control of respiratory infection
and might be cost effective.
-AU- Riley RL
Competing interests: No competing interests