CHEM 181 Lecture 4: chem 4

• School: McGill University
• Department: Chemistry
• Course: CHEM 181
• Professor: Joe Schwarcz

Document Summary

Prevention of malaria: insecticides treated nets for extra protection. Effective way to prevent malaria in african countries. Problem of poor countries = stagnant water perfect condition for mosquitoes to breed: genetic modification & parasite resistant mosquitoes. So less capable of reproducing & spreading malaria. Like cures like by samuel hahnemann 1796 homeopathy = concept molecule that give symptoms. Could be used as cure only if diluted. Dilute substance that caused symptoms of disease. Ex: fever & dilute to almost no original molecules left *ineffective. Issue = placebo effect also help by 28-30% Placebo effect studies show ~ 1/3 of patients get better. If drug tested to be effective = need to achieve rate higher than 30% largely due to body-mind. Dr. joseph lister = used simple molecule phenols. Disinfectant = contained phenol used to kill bacteria. Sprayed in region of operation for fewer infection. Phenol = benzene ring attached to oh group.