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When the Apple Watch was originally released in 2015, it was pitched as a great watch, an intimate way to communicate, and a comprehensive fitness device. While the original Apple Watch (later renamed Series 0) lacked GPS and was generally a slow device, it has shown dramatic improvements year over year particularly for Apple’s health initiatives.

When Apple released the Series 1 and Series 2 Apple Watches, it added heart rate monitoring for Apple Health. When you enable heart rate monitoring, you  can also turn on heart rate notifications, so you know if your heart rate remains above or below a chosen beats per minute (BPM), or to occasionally check for an irregular heart rhythm. Irregular rhythm notifications are available only with watchOS 5.1.2 or later in certain countries.

With Apple Watch Series 4, Apple added a electrocardiogram monitoring (also known as ECG and EKG). The ECG app on Apple Watch (Series 4 or newer) can record your heartbeat and rhythm using the electrical heart sensor and then check the reading for atrial fibrillation (AFib). It then records that information into the Apple Health app.

Since the release of Apple Watch, there have been countless stories of people’s lives being saved by the health advancements in Apple Watch and Apple’s Health initiatives.

If you have an Apple Watch Series 4 or newer, here’s a how to guide on how to take an ECG.

Apple also includes a Health app on the iPhone where it easy to learn about your health and start reaching your goals. It consolidates data from iPhone, Apple Watch, and third-party apps in one place.

Top Stories on Apple Health

How Apple Watch saved one man’s life — and how it’s empowering him after his heart attack

Apple and Stanford are currently conducting a heart study with Apple Watch

Scott Killian never imagined his Apple Watch might save his life, but that’s exactly what happened a few weeks ago when he had a heart attack in the middle of the night. Killian recently shared his personal experience with 9to5Mac, and the details of his story are absolutely amazing.


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Can apps prevent teen depression? A large-scale clinical trial aims to find out …

Small-scale studies of smartphone apps that claim to improve mental health have yielded some positive results in teenagers, but these are only indicative. Only a large-scale clinical trial can provide the data needed by mental health professionals to determine the true value of such apps, and a $1.6M study aims to provide the answer …


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EKG reader is first ever Apple Watch accessory to win FDA clearance as a medical device

The US Food and Drug Administration (FDA) has just granted the first ever clearance for an Apple Watch accessory to be used as a recognized medical device. Obtaining the green light took just over two years, around a year longer than the company had hoped.

AliveCor’s Kardiaband EKG reader is a Watch band that provides a much more convenient and discreet way to obtain an EKG reading, which can be used to detect abnormal heart rhythm and atrial fibrillation (AFib) …


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Surgeon uses iPhone-based ultrasound device to diagnose his own cancer

A vascular surgeon using his own neck to test an iPhone-based portable ultrasonic scanner found that cancerous cells were present. MIT Technology Review reported

Black-and gray images quickly appeared. John Martin is not a cancer specialist. But he knew that the dark, three-centimeter mass he saw did not belong there. “I was enough of a doctor to know I was in trouble,” he says. It was squamous-cell cancer …


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Patent describes clever method allowing an Apple Watch to measure blood pressure

Anyone who’s ever had a blood pressure test will know that it normally involves an inflatable cuff that squeezes your arm until it cuts off circulation, then gradually deflates it, measuring the point at which circulation first resumes and then returns to normal.

But an Apple patent published today describes a clever method for calculating blood pressure using nothing more than an Apple Watch with a sensor-equipped band …


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Comment: The best features of the Apple Watch will be the ones we hope you’ll never use

When the Apple Watch Series 3 was unveiled on Tuesday, all the attention was on the new LTE connectivity added to the latest model. But to my mind the far more significant announcement was something which will shortly be available on all Apple Watch models: the new heart-rate monitoring coming with watchOS 4.

There were four elements to this development, and I fully expect more to follow further down the line …


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Playing Pokémon GO good for both physical and mental health, say studies

Pokemon GO settlement

Two separate academic reports suggest that playing Pokémon GO can be good for both physical and mental health (provided that you manage to avoid car crashes and stay away from landmines).

New research by Tokyo University says that players report significantly reduced stress levels, which could have positive effects on mental health …


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Apple patent describes using the front-facing camera, light & proximity sensors for health measurements

An Apple patent granted today describes how the front-facing camera, light sensor and proximity sensor found in existing iPhones could be used for health measurements.

The electronic device uses one or more of the camera and the proximity sensor to emit light into a body part of a user touching a surface of the electronic device and one or more of the camera, the ambient light sensor, and the proximity sensor to receive at least part of the emitted light reflected by the body part of the user. The electronic device computes health data of the user based upon sensor data regarding the received light.

It also considers using additional sensors mounted in the same area for further health measurements …


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Smartphone use has radical impact on mental health of teens, claims San Diego SU psych professor

San Diego State University professor of psychology and author Jean Twenge has claimed that smartphone usage is having a radical impact on both the behavior and mental health of U.S. teenagers.

The arrival of the smartphone has radically changed every aspect of teenagers’ lives, from the nature of their social interactions to their mental health […] Rates of teen depression and suicide have skyrocketed since 2011. It’s not an exaggeration to describe iGen as being on the brink of the worst mental-health crisis in decades. Much of this deterioration can be traced to their phones.

Far from being the usual generalized complaint about teens spending too much time staring at their screens, Dr Twenge has plenty of hard data to support her contentions – made in The Atlantic, the magazine in which Laurene Powell Jobs recently bought a majority stake


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As Apple starts analyzing web browsing & health data, how comfortable are you with differential privacy?

An Apple software engineer recently revealed that Apple is now rolling out its use of differential privacy to cover both web browsing and health data, as it now uses the technique to process millions of pieces of daily information from device users.

Differential privacy has so far flown largely under the radar, so we thought it would be a good time to look at what it does and how it works – and to ask how comfortable you feel about its wider use by Apple …


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Health in iOS 11 & watchOS 4: Diabetes management, insulin delivery, CoreBluetooth, new Workout data & more

New for Health in iOS 11 & watchOS 4: Apple is introducing a handful of new features for diabetes management as the Apple Watch gains the ability to connect directly to Bluetooth Low Power devices like those used for glucose monitoring.

Alongside the new diabetes management features, app developers are getting more access to Workout data and other Apple Watch features, swimming tracking is getting improvements, and Health is introducing new Activity categories for tracking different types of exercises including Tai Chi, Mixed Cardio, and Hand Cycling.

Head below for a roundup of new features coming to the Health app and watchOS 4 this fall:


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An iPhone and Mac could be all you need to renew your eyeglasses prescription

Mail-order eyeglasses company Warby Parker has created an iPhone app that can replace a visit to the optometrist for some customers.

Has your eyeglasses prescription expired? Want to take a vision test at home? Well, welcome! Introducing Warby Parker Prescription Check. This is our brand-spanking-new mobile refraction service that, if you are eligible, allows an eye doctor to assess your vision and provide an updated eyeglasses prescription. (Is there anything your phone can’t do?!)

You’d of course expect there to be some small-print when you’re dealing with something as important as your eye-sight, and there is …


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Comment: Sleep tracking with Apple Watch is still an unsolved problem

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A common Apple Watch question people ask me is when will Apple add built-in sleep tracking capabilities. My answer is always ‘soon I hope’, and watchOS 4 seems like the next opportunity to introduce it. But there are already third-party apps that let you try it now. The problem for me is finding the right time to recharge my Apple Watch when I wear it overnight.


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