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Objective To investigate whether supplementing older adults with monthly doses of vitamin D alters the incidence of major cardiovascular events. Design Randomised, double blind, placebo controlled trial of monthly vitamin D (the D-Health Trial). Computer generated permuted block randomisation was used to allocate treatments. Setting Australia from 2014 to 2020. Participants 21 315 participants aged 60-84 years at enrolment. Exclusion criteria were self-reported hypercalcaemia, hyperparathyroidism, kidney stones, osteomalacia, sarcoidosis, taking >500 IU/day supplemental vitamin D, or unab...

In Ethiopia, pesticides are widely used in vegetable production. However, if used incorrectly they may harm consumers of vegetables contaminated with pesticide residues, as well as producers handling the pesticides and lead to ecological damage. We performed a cross-sectional survey to assess pesticide residues level in vegetables produced in central and eastern Ethiopia. A total of 232 vegetable samples (91 tomatoes, 106 cabbages and 35 Swiss chard) were collected from fields and retail markets, and were screened for 35 pesticides (20 organophosphate, 14 organochlorine and a synergist, pipero...

Climate change is already exposing species to dangerous temperatures driving widespread population and geographical contractions. However, little is known about how these risks of thermal exposure will expand across species’ existing geographical ranges over time as climate change continues. Here, using geographical data for approximately 36,000 marine and terrestrial species and climate projections to 2100, we show that the area of each species’ geographical range at risk of thermal exposure will expand abruptly. On average, more than 50% of the increase in exposure projected for ...

This randomized clinical trial assesses the efficacy and safety of a repeated low-level red-light intervention in preventing incident myopia among children in C

This study used a population-based individual patient data set that included diagnoses of COVID-19 to determine whether there was a temporal association between