The vocabulary of cutting back on screens, from blue light and doomscrolling to app permissions and infinite scroll, explained in plain language.

This article is general information about everyday health habits, not medical advice. If you have a health condition, are pregnant or take regular medication, talk to your doctor or another qualified health professional before making big changes to your diet, activity or sleep. Figures come from US public health sources such as the CDC, HHS and the Dietary Guidelines for Americans.

Talk about spending less time on your phone comes with a vocabulary of its own. Blue light, doomscrolling, infinite scroll, app permissions: the words appear in articles, app stores and settings menus, and it is easy to nod along without being sure what they mean. This glossary defines the terms in plain language, explains what researchers and consumer protection agencies actually say about them, and points to the phone settings that connect to each one.

Light, Screens and Evening Habits

Blue light is the part of visible light toward the blue end of the spectrum. Phones, tablets, computers and televisions emit it alongside every other color. It gets its share of attention because evening screen use is one of the habits people most often want to change, and many people notice that screens close to bedtime make it harder to settle down. The practical move is the same no matter how you interpret the research: give the last part of the day a shape that does not depend on a feed. Our evening wind-down routine is one way to do that.

Doomscrolling and Related Habits

Doomscrolling is the habit of scrolling social media and news feeds while hunting, almost without meaning to, for upsetting or negative information. Researchers who study the behavior use a close-to-that definition, and interest in it grew during the COVID-19 pandemic, when bad news was everywhere and phones were the main way people tracked it. Studies have associated doomscrolling with social media addiction and with the fear of missing out, and its relationship with wellbeing indicators such as life satisfaction appears to run through psychological distress.

Doomsurfing is a close cousin: instead of scrolling a feed, someone persistently searches or surfs for alarming news. During pandemic lockdowns around the world, news reading through digital channels rose by about 35 percent and through social media by nearly 47 percent, and COVID-19 news sat among the most searched topics on Google. Frequently checking case counts and staying up late to keep looking were typical signs.

Brain rot was named Oxford’s Word of the Year on 2 December 2024. It refers to the idea that heavy consumption of trivial or unchallenging online content wears down a person’s mental sharpness. A rapid review of research published in 2023 and 2024 found heavy use of social media and similar platforms tied to emotional numbing, mental overload and a poorer view of oneself, along with habits such as doomscrolling and zombie scrolling, which means scrolling on autopilot without absorbing much.

FOMO, short for fear of missing out, is the uneasy feeling that something important is happening without you. In a study of hundreds of adults, it showed up alongside social media addiction as significantly associated with doomscrolling.

One finding is worth knowing if you worry about your own scrolling. A study built on more than 1,100 daily observations found that social media access was associated with increases in depression and PTSD symptoms during the pandemic, and the association was stronger for people with histories of childhood maltreatment. If bad-news scrolling leaves you tense, our guide to healthy ways to handle everyday stress covers steadier responses.

Designed-for-Engagement Features

Apps compete for attention, and these terms describe the design choices that keep you inside them.

Autoplay starts the next video or episode the moment one ends, so there is no natural pause in which to decide whether to keep watching. Turning it off restores that pause.

Infinite scroll is a feed that loads new content continuously as you move down the page, removing the clear stopping point that a page boundary used to provide. Researchers reviewing the effects of heavy digital content use describe these platforms as running on dopamine-driven feedback loops, meaning small repeated rewards encourage more checking, and they report effects on thinking skills such as memory, planning and decision-making. The same review points to practical counters: keeping an eye on screen time, being deliberate about what you follow, and making room for offline activities.

Notifications and Checking

Push notifications are alerts an app sends to your lock screen or notification tray without you opening the app. They are genuinely useful for messages from people you know, and genuinely expensive for your attention when every app on the phone can use them.

Compulsive checking is the habit of picking up the phone to see whether anything new has arrived, often without a specific reason. Notifications train the habit, and the phone’s own dashboard (more on that below) will show you how often it happens. Breaking it is a repetition problem more than a willpower problem, so it helps to change the cues rather than rely on resolve.

App Permissions and Device Access

App permissions are the access an app requests, such as the camera, microphone, contacts, location or files. According to an FTC staff report on mobile apps for children, apps can automatically gather a wide range of information from a device, such as your exact location, phone number, contact list, call history, unique identifiers and other content stored on it.

Precise geolocation is your exact physical location rather than a general area. Companies use it to deliver content based on where you are, like nearby stores or the weather forecast, and to show you ads. Location is one of the permissions most worth reviewing, because it is sensitive, and many apps work acceptably with it off or limited to while you are using the app.

Tracking, Ads and Your Data

First-party tracking happens when a website you visit tracks you itself. Sites use it for things you might expect, like showing local weather, and for things you might not, like gathering analytics about your visit: the pages you viewed, how long you stayed, and details about the device and browser you were on.

Third-party tracking happens when a site you visit lets another company track you. Third-party tracking companies can follow your activity across most of the sites you visit, which is how what you do on one site shapes the ads you see somewhere else entirely.

Targeted ads, also called personalized ads, are advertisements shaped by your browsing history or your location. The FTC’s example is simple: read a few articles about running and fitness, and ads for running shoes may follow you onto other sites.

Privacy notices are a company’s explanations of what information it collects and how it uses and shares it. Consumer guidance from the FTC suggests comparing notices between apps that offer similar services, and checking whether sharing is explained and whether limits are placed on what other companies can do with your data. For children, the Children’s Online Privacy Protection Act gives parents a say over what information websites may collect about their kids.

Data brokers are companies that collect and sell personal information. You can opt out of data broker sites, and the FTC’s online privacy guide explains how.

Stalking apps let a person track someone through their phone without permission. The FTC publishes guidance on how to tell whether one is on your phone and what to do about it, which is worth reading if someone in your life seems to know too much about your movements.

A note on health: Health and wellness apps often ask for some of your most sensitive information, and unlike your doctor’s office, many are not covered by health privacy laws such as HIPAA, which covers health information held by health plans and most health care providers. The FTC has taken action against health apps that promised to keep personal information private and then shared users’ health information for advertising.

A few habits round this out. Defaults inside many apps lean toward sharing, so go into the app itself and pick the stricter options. Installing app and phone updates promptly matters too, because they sometimes patch privacy or security problems. In some states, the law also lets you ask a company to delete your data, so it is worth finding out whether yours offers that protection.

Built-In Tools That Help You Cut Back

Screen-time dashboards are reports built into most phones that show how much time you spend on the device and in each app. The point is not judgment. A vague sense of “too much phone” is hard to act on, while a specific daily number for one app gives you something concrete to change.

Downtime settings let you schedule hours when most apps are restricted, such as the hour before bed or overnight. Pairing a set downtime with a routine you already have makes the change easier to keep, and habit stacking explains how to anchor a new habit to an old one.

Private browsing mode is a browser option that erases your browsing history once you close the session. It does not keep websites from seeing what you do online, so think of it as housekeeping for your own device rather than a way to hide from trackers.

Browser privacy settings give you some control over what websites collect: you can keep sites from seeing your browsing history, hold back your location, and decide whether personalized ads are allowed. Protections vary by browser. Your phone also has an opt-out for personalized ads from the operating system maker, usually tucked into the advertising section of its privacy settings. You will still see ads either way; they simply will not be built from your browsing history.

Browser extensions, including ad blockers, can add privacy controls, and the FTC suggests checking reviews from trustworthy sources before installing one. Internet-connected TVs and streaming devices also collect information, so it is worth opening their privacy settings and permissions too. Then pick a realistic target, whether that is one app, one hour of the day or notifications from a single category, and let the dashboard tell you whether it worked.

Still wondering?

What is doomscrolling?

It is the habit of scrolling social media and news feeds while hunting for upsetting or negative stories. Studies have tied it to social media addiction, the fear of missing out and psychological distress.

Does blue light from screens ruin sleep?

Blue light is simply the light toward the blue end of the visible spectrum, which screens emit along with other colors. Many people find evening screens make it harder to wind down, and a predictable, mostly screen-free wind-down is the most practical response.

How do I stop my phone from tracking me for ads?

Use your browser’s privacy settings to limit browsing history and location sharing, and use the advertising section of your phone’s privacy settings to opt out of personalized ads from the operating system maker. You will still see ads, but they will not be based on your browsing history.

What should I check before using a health app?

Read the privacy notice to see what health information it collects and how it is used and shared, and adjust the app’s settings, since defaults often encourage sharing. Keep the app and your phone’s operating system updated, because updates sometimes include privacy and security fixes.