Prolonged exposure is also linked with immune suppression and increased susceptibility to respiratory infections
On the other hand, if man is descended from some ape-like creature, no valid reason can be assigned why certain muscles should not suddenly reappear after an interval of many thousand generations, in the same manner as with horses, asses, and mules, dark-coloured stripes suddenly reappear on the legs and shoulders, after an interval of hundreds, or more probably thousands, of generations
Science 254 , 11781181 (1991)
For those sensitive to pollen, we advise keeping windows closed during peak pollen seasons, using air conditioning, and showering after outdoor activities