Weak instruments (i.e., weak association with the risk factor and/or imprecise association with the outcome), horizontal pleiotropy (when genetic IVs affect the outcome through causal pathways unrelated to the exposure), heterogeneity in variant-specific effects, and errors in phenotype measurements (especially if these are biased) can limit applicability [20]
Now, preliminary research suggests that lungs exposed to cigarette smoke accumulate abnormally large numbers of ACE2 receptors, which may leave the organ vulnerable to damage inflicted by the coronavirus
The "spices" have an unpleasant smell, not like an exotic marketplace of your imagination but like you spent the day cooking curries and neglected to take a shower
Researchers tested three different measures: strength of urges to smoke, confidence in staying quit, and cessation fatigue (the mental exhaustion from maintaining abstinence)
The refreshing taste and high-quality materials make every puff satisfying
A common criticism of recovering addicts is that theyve just replaced one addiction with another. However, depending on the context, this phrase can have radically different meanings
