All Correspondence this week responds to
the expansion of diagnostic categories and
Barbara Sahakian and Sharon Morein-
the invention of new pathological conditions
Zamir’s Commentary ‘Professor’s little helper’
— sometimes to cover cases that in earlier
(Nature450, 1157–1159; 2007) and the
times would have been regarded as within
related discussion at http://network.nature.
Third, it contributes to inequity in access.
This week, Nature launches an anonymous online survey to build on the informal
be interested in trying modafinil or a related
questionnaire that the Commentary authors
drug is not cost (which is similar to that
sent academics on the usage of brain-boosting
of a large cup of coffee) but information:
drugs. In aggregate, the survey results will guide future editorial content on this topic. To take
obtain it. This discriminates against people
part, please visit: http://tinyurl.com/yq7nn3.The action of enhancers
medicine, we need to retool our regulatory
can lead to addiction
occupations such as military commandos and air-traffic controllers that would
SIR — Sahakian and Morein-Zamir revive
questions about the widespread availability
and diversion of prescription medications
intellectually taxing — including the jobs of
for non-clinical use in healthy individuals
Drugs can be used to treat
(Nature450, 1157–1159; 2007). Such
that can help our brains deal better with the
questions drove legislators to impose controls
more than disease
a few decades ago, when amphetamines and
actively sought. But it will require substantial
Because the diversion of drugs is linked
investment to develop interventions that are
(Nature450, 1157–1159; 2007). I agree with
both safe and effective in long-term use.
Organization monitors their production and
the point made by several commentators, that
Nick Bostrom
consumption by individual nations. In the
there is a need for better understanding of the
United States, production of stimulant drugs
long-term effects of using potential cognitive
enhancers in an ecological setting. It is one
and enough are now produced each year for
thing to show a short-term positive effect
16/17 St Ebbe’s Street, Oxford OX1 1PT, UK
the daily treatment of at least four million
on some artificial lab task; it is quite another
to show that long-term use actually leads to
other cognitive enhancers are intended for
sustainable performance gains on important
Low dose of alertness drug
legitimate clinical use, history predicts that
real-world tasks, such as academic output.
greater availability will lead to an increase
The former is easier to demonstrate, but the
counters ‘family fatigue’
high-school students, abuse of prescription
SIR — I have been taking 50 mg of modafinil
medications is second only to cannabis use.
almost daily for over a year. For most of my
understanding their long-term effects, is
74 years, I have struggled with fatigue and
improve our cognitive performance might be
hampered by a shortage of focused research
desirable in theory, these may have adverse
in this area. In general, the potential of
afternoon. This is part of my family history:
enhancement medicine has yet to be fully
my father and grandfather both structured
are necesssary, for these medications can be
afternoon naps into their schedules. I have
addictive. This is because cognitive enhancers
Prevailing patterns of medical funding and
found that caffeine and nicotine are either
regulation are organized around the concept
ineffective or cause a jittery nerviness. The
side effects of the antidepressants I tried —
activity of dopamine, a neurotransmitter that
desipramine, Paxil and Wellbutrin — were
increases saliency, making cognitive tasks and
effects was developed as a treatment for some
everyday activities seem more interesting and
pathology. Its good effects on healthy adults’
rewarding. This learned experience can lead
brains were discovered as fortuitous side
desired an extended high level of attention.
to abuse of the drug and to compulsive use
Previously, I could work competently on the
interventions to improve cognition. In the
First, it makes funding hard to come by;
modafinil, I could continue for almost three
meantime, we need to learn from history and
it also makes it difficult to obtain regulatory
hours. It did not make me ‘smarter’, but
approval for enhancement drugs. The result
extended the length of concentrated focus. Nora D. Volkow*, James M. Swanson†
is that those who wish to research cognitive
country drive, I was not only more alert but
found the journey more enjoyable and less
I have not seen any data suggesting that
benefits of a cognitive enhancer, the user
modafinil is either habit-forming or easily
must first be classified as sick. This leads to
abused (I have not looked for studies in
European Medicines Agency Press office PRESS RELEASE The European Medicines Agency recommends suspension of the marketing authorisation of Acomplia The European Medicines Agency (EMEA) has recommended the suspension of the marketing authorisation for Acomplia (rimonabant) from Sanofi-Aventis. The EMEA’s Committee for Medicinal Products for Human Use (CHMP) has concluded that t
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