Secondhand smoke can even be harmful to pets
1 One result is that medical approval of marijuana is left to state legislatures, who are essentially legalizing recreational marijuana but forcing physicians to act as gatekeepers for those who wish to obtain it. 2 Devinsky O, Friedman D
There are three types of smoke detectors commonly used, so lets take a look at each of them and see how sensitive they are to vapour
of DNA methylation patterns PEBP1 gene in rats [44] Reduction of sperm count and motility in rats [45] Alcohol consumption Reduction of seminal volume and sperm concentration [58,61,62] Impairment of sperm motility and morphology [60,61] Increased sperm polycyclic aromatic hydrocarbon DNA adducts [72] Increase in apoptosis (by upregulation of Fas) of spermatogenic cells in rats [68] Alteration of nuclear maturity and DNA integrity in sperm cells of rats [70] Increase in ROS generation and depletion of glutathione pool in testicular tissue of rats [71] Impairment of sperm motility in rats [70] Drug addiction Marijuana Decrease in sperm count [8284] Impairment of sperm morphology and motility [85,102,103] Reduction of spontaneous acrosome reactions [102,103] Impaired sperm concentration and morphology in rats [91] Inhibition of sperm ATP production in rats [104] Reduction of fructose and citric acid contents in testis and prostate of male rats [95] Cocaine Impairment of sperm counts and motility [86] Vasoconstriction of testicular blood vessels in rats resulting in ischemic and reperfusion injuries [96] Reduction of diameter of seminiferous tubules [97] Decrease in number of total germ cells [97] Increase in oxidative stress in mice [98] Opioids Impaired spermatogenesis [76] Increased rates of DNA fragmentation in humans [89] Reduced expression of catalase-like and superoxide dismutase-like activity [89] Increase of rates of DNA damage and tubular degeneration in rats [100,101] Amphetamines and Ecstasy No data available Vasoconstriction of testicular blood vessels in rats [96] Increase in rates of DNA damage and tubular degeneration in rats [99] Table 3 Effects of tobacco smoking, alcohol consumption and drug addiction on hormone levels Studies in humans Animal studies Tobacco smoking Increase in liver metabolism of testosterone [24] Reduction of LH and/or FSH levels [34] Increase in concentration of LH and/or FSH [35] Increase in serum testosterone and DHEA levels [35,37] Reduction of testosterone levels in rats [45,46] Alcohol consumption Decrease in testosterone levels [58,59] Increase in FSH, LH, and E2 levels [60] Decrease in plasma and intra-testicular testosterone in rats [71] Drug addiction Marijuana Decrease in levels of plasma testosterone [78] Decreased levels of plasma LH, and increased levels of plasma cortisol [81] Increased serum testosterone [82] Inhibition of LHRH release in rats [92] Decrease in testosterone levels in monkeys [93] Cocaine Increase in LH levels without modifying testosterone following acute administration [97] Increase in LH levels
