Scientists at King's College London have developed a study on the pollution of the waters of the river that runs through the city. The samples have been collected from the sampling station next to the Palace of Westminister reveals that the amount of cocaine dissolved in the urine of citizens has increased exponentially. The result is that these substances pass directly to the Thames once they are filtered by the sewage system. It has a direct effect on the existing fauna and flora. On the one hand, treatment plants can not filter the amount of cocaine. On the other hand, and as a result, eels become hyperactive because this substance makes them travel more actively through space.
The increase in concentration of these substances in the Thames is related to the increase in the consumption of these substances. A survey conducted by the Gobal Drug Survey has shown that new technologies have increased the consumption of drugs. They have gone from being consumed occasionally on weekends to being used daily, hence the level of contamination has grown. The researchers stated that "increases in caffeine, cocaine and benzoylecgonine were observed 24 hours after sewer overflow events."
Italian researchers have conducted a study on the effects of long exposure to eels in eels. Cocaine causes the animals, in addition to behaving hyperactively, to increase the levels of the stress hormone, cortisol. The peaks of this hormone cause the consumption of fat to increase. This layer of healthy fat allows animals to migrate to reproduce. In the long term, and if the level of cocaine is not reduced, migration patterns may be affected and as a consequence, have a negative impact on the reproduction of eels.