 
 <prompt> If pikin dey live for place wey no too clean, wetin go helep am? Given di last question, write one tori wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The hygiene hypothesis dey try explain why asthma dey increase for everywhere sake of pikin dem no dey see non-pathogenic bacteria and viruses wen dem dey young. Dem talk say e fit be say because people dey too clean now and family size don reduce for modern societies. If pikin dey see bacterial endotoxin wen dem small, e fit prevent asthma, but if e happen wen dem don old, e fit cause bronchoconstriction. Evidence wey dey support the hygiene hypothesis na say asthma dey low for places like farms and houses wey get pets. 