OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is used to explain why countries with improved hygiene are experiencing increases in asthma and allergy rates?
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the hygiene hypothesis, which says that exposure to some pathogens early in life allows for a better T-cell balance
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cleaner countries tend to have more air pollution
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because hygiene is better, pathogens have become stronger
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None of the above
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Explanation:
Detailed explanation-1: -Purpose of review: It has been hypothesized that increased cleanliness, reduced family size, and subsequent decreased microbial exposure could explain the increases in global asthma prevalence. This review considers the recent evidence for and against the ‘hygiene hypothesis’.
Detailed explanation-2: -The Hygiene Hypothesis suggests that as our environment has become “cleaner, ‘’ some children’s immune systems-left with decreased invaders to battle-may overreact to new food proteins and create allergic responses instead (source).
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