Box 10-1: Through a
Glass, Darwinian
Nootropics, The Smart Drugs: Can Genius Be Purchased
in Pill Form?
Using drugs to enhance
cognitive performance is nothing new. The 19th century writer,
Balzac regularly dosed himself with massive amounts of coffee (caffeine) in
order to maintain his prolificacy. Today, many thousands use caffeine to help
them meet the cognitive demands of daily life. Thousands also use the drug
nicotine, which stimulates excitatory acetylcholine receptors, as a cognitive
aid despite the severe health hazards associated with it. These drugs and their
cognitive effects were discovered serendipitously but currently the search for
new nootropics is a major goal of many major pharmaceutical laboratories.
The term nootropic comes
from a Greek word meaning "acting on the mind" (Dean, 1993). The
“grandfather” of nootropic drugs is piracetam which, in fact, carries the brand
name nootropyl. Piracetam was invented by UCB Laboratories in Belgium.
Piracetam is reported to boost mental clarity and alertness, improve problem
solving ability and verbal ability and enhance memory and concentration.
Remarkably, it may have a regenerative effect upon the nervous system. When
piracetam was given to older mice for a two-week period, researchers found a
30-40% increase in the number of cholinergic receptors in their frontal
cortexes. Piracetam may also improve creativity by increasing the flow of
information between the right and left hemispheres of the brain. Moreover,
these effects are achieved without promoting addiction. Few, if any negative
side effects have been reported with short term usage. The discovery of
piracetam set off a competitive race in the pharmaceutical industry to find
more nootropics. Some of the related compounds that have been produced include;
aniracetam, pramiracetam, and oxiracetam.
Most of the nootropics, to
date, have been developed by European pharmaceutical companies. However,
researchers, Jerry Yin and Tim Tully of Cold Spring Harbor Laboratory of Long
Island, New York are on the verge of clinical trials for their own
memory-enhancing drug (Weed, 2000). They have isolated a protein that helps
nerve cells in the brain store memories. They created two genetically altered
strains of fruit flies: one with extremely high levels of this protein and the
other with almost none. They then looked at how rapidly individuals from the
respective strains would learn to avoid a certain odor that presaged an
electric shock. The high protein strain learned in one trial. The low protein
strain never made the association. Fruit flies with normal levels of the memory
protein needed an average of 10 trials to learn the association.
Yin and Tully are close to developing a pill that will temporarily produce an overproduction of this memory protein in the human brain, thus permitting extreme memory enhancement upon demand. This memory protein does not enhance intelligence, so if its widespread use becomes a reality, we have the prospect many students who have indelibly stamped volumes of information into their memories but who remain clueless as to what it all means.
Nootropics can not really
give you something you do not already have. What they do is make performance at
the upper range of one’s potential, in terms of problem solving, verbal
fluency, clarity and memory more available on a day to day basis. As any
competitive athlete will attest, anything that allows one to consistently
perform closer to their best is a major helping factor. Many individuals are
capable of turning in an outstanding performance occasionally but it is
consistent high level performance, day in and day out that separates the
champions from the also-rans. This is not to suggest that everyone with
academic aspirations should rush out and purchase nootropic compounds.
Nootropic research is still
in its infancy. Although, findings from animal research confirm the efficacy of
existing nootropics, their mechanism of action is largely unknown. Moreover,
the nature and magnitude of their effects on human cognition remains a mystery
because of the lack of experimental studies with humans. One very serious
consideration is the fact that almost nothing is known about the long-term
effects of these drugs. The FDA has not approved most of these drugs.
Paradoxically, one of the most commonly used nootropics, nicotine, is fully
legal, highly addictive, and proven to cause cancer and heart disease. Given
the labile nature of human rationalization, this last fact could be used to
argue for either tighter controls or looser controls on nootropics.