Your Brain on Screens: Myths and Facts & How Your Body Keeps You Alive

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Apr 24, 2025

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INSIGHT

Hunger Increases Spending Impulses

Hunger increases spending by triggering a primal hunting and gathering urge.
A scent like cinnamon or ovulation timing can also increase spending impulses.

INSIGHT

Screen Time Effects Vary

Screen time impacts depend on content, user, and what it replaces.
Excess screen time risks include less social interaction and exposure to harmful content.

ADVICE

Practical Steps to Control Phone Use

Use phone features to limit or block app use to reduce excessive screen time.
Set phone-free times, locations, and establish usage guidelines with family or friends.

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You are familiar with the advice that you shouldn’t go grocery shopping when you are hungry because you will spend more money and buy more junk. However, that’s just a piece of story. Hunger and shopping are related in other ways. This episode begins by explaining how. https://phys.org/news/2015-03-hungry-people-food.html#google_vignette

The idea that spending too much time on your phone, tablet or computer is bad for you has become conventional wisdom. But is that true? What does the research say about this? It turns out it's not black and white, there are shades of gray worth understanding. Here to explain this is Jacqueline Nesi. She is a psychologist and assistant professor at Brown University who writes the popular weekly newsletter Techno Sapiens (https://technosapiens.substack.com), which provides tips to manage your screen time better. She has published over 50 peer-reviewed publications related to technology use and has appeared on CNBC, CNN, and NPR.

Your body is an amazing collection of processes and systems that all work to keep you alive and moving. Most of us have no idea what goes on inside of us to make it all happen so, here to explain some of it and unravel a few mysteries of the human body and explain why we can’t live forever, how the body defends itself, why we need to sleep and so much and more is Dr. Darragh Ennis. He is a scientist and researcher who has worked at the University of Oxford and the University of Glasgow and he is author of the book The Body: 10 Things You Should Know (https://amzn.to/42ApkC5).

Have you heard the word “halfalogue? It’s when you hear someone else talking on their phone but you are hearing only their side of the conversation. It can drive you crazy and it has other implications, especially if you are driving a car. Listen as I explain. https://news.cornell.edu/stories/2010/05/half-heard-phone-conversations-reduce-performance

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