A new paper finds that adolescents have become less likely to approve of and use marijuana over the last decade when compared to young adults. This is coming during a time where a majority of Americans support the full legalization of marijuana, according to a 2013 Gallup poll.  

Using survey data collected from the nationally representative National Survey on Drug Use and Health (NSDUH) conducted between 2002 through 2013, the researchers broke the sample into three subgroups based upon age: younger adolescents (aged 12–14), older adolescents (aged 15–17), and young adults (aged 18–25). In breaking the sample into subgroups, distinct trends emerged within each category.

Engineers have developed a new medical device aimed at improving diagnostic procedures for various cancers. The Tadpole Endoscope is like a micro-robot fish with a camera which is swallowed by the patient.

It is different from existing wireless capsule endoscopes by addition of a soft tail that allows it to be guided around the stomach remotely by a doctor, allowing for more comprehensive imaging and accurate location of problems within the body.

For environmental activists who want to use social networks to mobilize the public beyond the retweet, there are three keys to success, according to a paper by scholars ar Universidad Carlos III de Madrid (UC3M) and INGENIO, a joint center of the Universidad Politécnica de Valencia and CSIC.

Targeted cancer treatments, toxicity sensors and living factories: synthetic biology has the potential to revolutionize science and medicine. But before the technology is ready for real-world applications, more attention needs to be paid to its safety and stability, according to a review article.

Synthetic biology involves engineering microbes like bacteria to program them to behave in certain ways. For example, bacteria can be engineered to glow when they detect certain molecules, and can be turned into tiny factories to produce chemicals.

Research has found evidence that spending time in nature provides protections against a startling range of diseases, including depression, diabetes, obesity, ADHD, cardiovascular disease, cancer, and many more. How this exposure to green space leads to better health has remained a mystery.

After reviewing hundreds of studies examining nature’s effects on health, University of Illinois environment and behavior researcher Ming Kuo believes the answer lies in nature’s ability to enhance the functioning of the body’s immune system.

A new review finds that people consume more food or non-alcoholic drinks when offered larger sized portions or when they use larger items of tableware.

Overeating increases the risks of heart disease, diabetes, and many cancers, which are among the leading causes of ill health and premature death. However, the extent to which this overconsumption might be attributed to ‘overserving’ of larger-sized portions of food and drink has not been known. The research suggests that eliminating larger-sized portions from the diet completely could reduce energy intake by up to 16% among UK adults or 29% among US adults.