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For your Memorial Day weekend reading, here’s a review of some lesser-seen science news from Iowa universities over the last few weeks, including “addictive” cellphones, a hint at how to avoid Alzheimer’s disease and mineral water that could give you an unhealthy glow.

If you’re reading this on a mobile phone, you might want to pay special attention to the first item. Iowa State University researchers say their quiz can help determine whether you have an unhealthy attachment to your pocket brain. It could be an addiction. Or not.

Another ISU researcher’s study, meanwhile, has implications for the brain between your ears – the real one with hands-free access (unless, like me, you hold your head while thinking). The bottom line from his Alzheimer’s disease research may give you another reason to stop using your exercise bike as a clothesline.

And finally, a University of Iowa report suggests brackish underground water produced as a consequence of hydraulic fracturing (“fracking”) for gas and oil may be more dangerous than previously thought.

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