IQ decline is highest among those who started using during adolescence and among the most persistent (daily) users.
After almost four-and-a half decades and from modest beginnings, the Dunedin study has evolved into one of the most significant long-term tracking studies in the world.
A pickup truck from the Department of Health fumigates in San Juan, Jan. 27, 2016.
It's hard to contain a mosquito-borne infection like Zika when the conditions are ideal for it to spread.
Alcohol use is traditionally higher among men than women but new evidence suggests this is changing.
Women are catching up to men in rates of alcohol consumption and this has important implications for how we think about our community response to harmful alcohol use.
Most cases of Zika are asymptomatic.
Airman Magazine/U.S. Air Force Photo/Tech. Sgt. Brandon Shapiro/Flickr
A computer model suggests that while more cases of Zika can be expected in the continental U.S. outbreaks will probably be small and are not projected to spread.
What could we do if a real-life zombie disease started to spread?
Patients and companions at the Cholera Treatment Center in Haiti, April 2015.
Andres Martinez Casares
Unless drinking water and sanitation infrastructure are improved, cholera could remain in Haiti indefinitely.
Observational scientists study subjects in real life, outside a controlled laboratory environment.
The randomised controlled trial is touted as the gold standard in medical research. But its controlled laboratory conditions are far removed from the messy realities of life.
Elementary school students about 13 miles from the Fukushima Daiichi nuclear power plant walk past a geiger counter in 2012.
Remediation will never get radiation to zero in the area affected by the 2011 meltdown at the Fukushima-Daiichi nuclear power plant. Rather than safety, the conversation should focus on acceptable risk.
Even talking to a colleague at an academic conference overseas could have harsh ramifications.
Researchers face stiff fines or even jail time if they inadvertently communicate with foreign colleagues about matters deemed to have a military use.
robbinsbox / shutterstock
French farms have seen a major outbreak of bluetongue virus, which can be fatal for sheep.
NASA’s Aqua satellite, carrying sensors used by researchers to measure mosquito-favoring environmental conditions on Earth.
Satellite imaging can locate mosquito-friendly environments, allowing us to predict the advance of diseases they carry.
Polio vaccinators carry boxes of polio vaccine drops as they head to the areas they have been appointed to administer the vaccine, in Karachi October 21 2014.
Researchers are piloting a smartphone app to collect better information about who is getting vaccinated and to design better incentives for health workers on vaccination drives.
The effects of alcohol vary considerably between different people.
Mario Antonio Pena Zapater/Flickr
The relationship between alcohol and violence is complex, and dramatic changes to criminal laws to punish intoxicated offenders are often ineffective, unfair or both.
Don’t stay up too late.
Mice via www.shutterstock.com
How does one prove that shift work causes breast cancer, as the authors of the new study claim? A cancer epidemiologist explains how scientists weigh evidence to figure out what causes cancer.
Try to predict the outcome of a single coin toss and you’ll have only a 50-50 chance of being correct.
Predicting infectious disease outbreaks is a tricky task to begin with. And it's made harder still by the fact that any individual outcome is subject to unpredictable – or stochastic – effects.
The new fingerprint test can detect Ebola in minutes.
A new fingerprick test given at the patient's bedside predicts Ebola infection within minutes.
Perfect nails, at what cost?
The nail salon industry is booming. But along with polished nails come toxic health effects for the workers, due to the chemical compounds in nail care products.
Can Twitter fill in the gaps for social research?
Twitter page via www.shutterstock.com
Understanding public opinion can help officials target messages during a health crisis. But current survey methods aren't good at generating representative samples. Can Twitter fill in the gaps?
It must be the flu, right?
Woman via Shutterstock
Ever tweet about being sick? Or look up your symptoms online? Researchers are using this information to monitor illnesses and attitudes about health in real time.
No, you can’t catch Ebola from holding a trophy.
The Africa Cup of Nations, the continent’s mini-World Cup, is played every two years by the national teams of 16 African countries who have competed in a series of qualifiers to play in the final tournament…