Search results for "Causal association"
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Is physical activity a cause of longevity? It is not as straightforward as some would believe. A critical analysis
2018
There are discrepant findings between (A) observational follow-ups and (B) interventional studies that investigate possible causal association between high physical activity and low mortality. Participation in vigorous physical activity at a specific time-point is an indicator of good fitness and health, and is associated with a reduced risk of death. However, neither randomised controlled trials nor experimental animal studies have provided conclusive evidence to show that physical activity started during adulthood extends lifespan. Consequently, the undisputed health-related benefits of exercise have yet to translate into any proven causal relationship with longevity. Physical activity im…
Cannabis and Psychosis: A Causal Association
2021
Nowadays, the use of cannabis is widespread around the world and THC content of confiscated cannabis has increased in the last years. This fact has raised some consequences, especially in the mental health of the people. Although there have existed some initial controversies about the relationship between cannabis and psychosis, at the present time there are some certainties of the causal association between them. Through the Bradford Hill postulates, we will try to demonstrate that cannabis produces psychosis. The strength of the association, the consistency along the studies, biological gradient, temporality, plausibility, coherence, experimentation, and analogies support the cause-effect…