Register for an account

X

Enter your name and email address below.

Your email address is used to log in and will not be shared or sold. Read our privacy policy.

X

Website access code

Enter your access code into the form field below.

If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition.

Health

How Satellites Are Peering Into Public Health Issues

D-briefBy Nathaniel ScharpingSeptember 12, 2018 9:30 PM
satellite map
A view of Seattle, one of the cities included in the study, taken by satellite. (Credit: Naeblys/Shutterstock)

Newsletter

Sign up for our email newsletter for the latest science news

Scientists say they have a new way of measuring obesity — from space.

Can those jokes — it doesn’t have anything to do with individuals. Instead, researchers from the University of Washington took satellite maps of various U.S. cities and trained an AI to look for features of the neighborhoods that might be relevant to health. This included things like green spaces, housing density, gyms, fast food outlets and public transportation, and they paired this data with statistics on obesity from each location.

The end result was an algorithm that was able to parse out which features of a city were most likely to be associated with obesity. In all, the factors in their model could account for most of the obesity in a region, though it varied in accuracy somewhat between locations. Things like parks and gyms were unsurprisingly associated with low levels of obesity. But there were also unexpected ties, like neighborhoods with more pet shops are also home to thinner people.

The study was published last month on JAMA Network Open.

The data is both an argument for including more healthful spaces in cities and a potential aid to public health officials trying to decide where to target campaigns fighting obesity. The composition of built spaces in cities could be a clear giveaway that people are more at risk for being overweight.

Things like income matter as well. Cities or neighborhoods with wealthier occupants are more able to build and maintain things like parks, and might also have more gyms and fewer fast food restaurants. The map is just one of a number of factors public health officials need to consider, though it does offer a previously absent perspective on obesity risk. It’s also a much quicker way to assess whether a community might be at risk, as official estimates are usually a few years behind.

The model could also potentially be applied to other public health campaigns, such as those looking at disease prevalence. They could not only identify communities at risk, but perhaps uncover factors affecting disease outbreaks or public health we hadn’t even thought of.

2 Free Articles Left

Want it all? Get unlimited access when you subscribe.

Subscribe

Already a subscriber? Register or Log In

Want unlimited access?

Subscribe today and save 70%

Subscribe

Already a subscriber? Register or Log In