ANALIZE MEDICALE DE LABORATOR
Aici gasiti analizele medicale grupate pe categorii precum si detalii generale si specifice pentru categoriile respective.
Selectati o categorie din lista de mai jos:
Solutie antistress!
Construieste poduri :)
Prinde pisica neagra :)
The Case For Reversing, Or At Least Delaying, Aging
An analysis published on bmj.com
concludes that greater health benefits can be achieved through slowing
the aging process rather than targeting specific diseases through
traditional medical approaches. As people in the developed world are
living much longer, the trend is that people increasingly are
experiencing more than one age-related disease. This comorbidity is
becoming quite normal, but it used to be an exception. However, most
medical research still focuses on curing and preventing individual
diseases, assumed to be independent of each other.
If we continue the disease-specific approach, argues Professor S Jay
Olshansky and colleagues, its effectiveness will become more limited -
a cure for any of the most fatal diseases would only result in a small
effect on life expectancy. Since humans become much more disease-prone
as they age, the researchers argue that a "systematic attack on ageing
itself" is the best way to fight disease and disability.
Olshansky and colleagues maintain that our understanding of the
biological mechanisms that lead to aging - highly related to most
diseases and age-related health problems - is sufficient to suggest a
reformed model of health promotion and disease prevention. According to
the authors, there are biochemical markers that we can modify to
influence the rate at which we age. It is suggested that all living
things including humans possess these modifiable biochemical
mechanisms. Research has already shown that restricting diets and
altering genes of mice, flies, and worms have led to extended lifespans
of these animals and have resulted in a delay of age-related diseases
such as cancer, cataracts and cognitive decline.
In order for this new model of medical research to exist, the authors
argue for mode funding and research into the "fundamental cellular and
physiological changes that drive ageing itself". For example, in
addition to continued research into individual diseases, studies should
analyze the relationships between aging and diseases such as type 2
diabetes, Parkinson's disease, and most cancers.
An accompanying analysis, written by Professor Colin Farrelly
(University of Waterloo in Canada), emphasizes that society and
individuals benefit when people stay healthier for longer. Through
successful lifespan increases with laboratory organisms, researchers
have shown that aging is not an irreversible process. Farrelly believes
that, "If
we succeed in slowing ageing by seven years, the age specific risk of
death,
frailty, and disability will be reduced by about half at every age."
The next few decades will see a rapid expansion in the population of
older people, an increase in the number of people with disease
and chronic illness, and a dramatic increase in healthcare costs. In
the USA in 2007, cancer inflicted a burden of $219 billion - $130
billion in lost productivity and $89 billion in direct medical costs.
Farrelly writes: "Given
the current predicament we face, we cannot ignore the call to tackle
ageing
more aggressively. To those who ask: 'Can we really afford to invest
more in
such research?' we can reply: 'Can we really afford not to tackle
ageing?' That
is the really important question. And the answer is clearly no. By
extending
the life span when higher levels of physical and mental capacity are
expressed,
people would remain in the workforce longer, personal income and
savings would
increase, age entitlement programmes would face less pressure from
shifting
demographics, and national economies would flourish."
The greatest challenge, according to Farrelly, lies in convincing the
public that aging can be delayed and is a worthy topic for an increased
share of research dollars.
New model of health promotion and disease prevention for the
21st century
Robert N Butler, Richard A Miller, Daniel Perry, Bruce A
Carnes, T Franklin Williams, Christine
Cassel, Jacob Brody, Marie A Bernard, Linda
Partridge, Thomas Kirkwood, George M
Martin, S Jay Olshansky
BMJ (2008). 337: a399.
doi: 10.1136/bmj.a399.
Click
Here to View Abstract
Has the time come to take on time itself?
Colin Farrelly
BMJ (2008). 337: a414.
doi: 10.1136/bmj.a414.
Click
Here to View Abstract
Written by: Peter M Crosta
Copyright: Start Sanatate
Not to be reproduced without permission of Start Sanatate
Cazul pentru mers, sau cel puþin întârzierea, Aging - The Case For Reversing, Or At Least Delaying, Aging - articole medicale engleza - startsanatate