A nursing student is telling Apple Watch wearers to do this after she made an alarming discovery

Apple Watch 7 heart rate monitor
(Image credit: Future)

A nursing student from Australia is encouraging Apple Watch users to enable their heart rate notifications after realizing her watch had spotted a serious health condition months before she was diagnosed. 

Apple’s heart rate notifications can help wearers spot possible issues with their heart health. When enabled, the notifications alert users when they're experiencing high or low heart rates, as well as irregular heart rhythms. If you know how to use your Apple Watch, you might even have heart rate alerts turned on already. 

In a video posted to TikTok on February 2, Lauren Rebecca, a nursing student from Sydney, encouraged viewers to enable these notifications. The video shows how her Apple Watch detected changes in her health and should have made her realize something was wrong sooner. 

@studyvlogloz

♬ original sound - Lauren 🤍

Lauren shares a graph from her Apple Watch showing that her oxygen consumption dramatically dropped in October, “a sign my cardiovascular system wasn’t working as well as it once was." Lauren says the drop corresponded to the start of her other symptoms, which included fatigue, heat sensitivity, weight gain, dry skin and general irritability. 

In December Lauren posted a TikTok video revealing she was diagnosed with thyroid hemiagenesis — a rare abnormality of the thyroid gland. 

“Don't get me wrong, your Apple Watch is definitely not something you should follow as medical advice, but it can come in handy, I guess, as a tool to prompt you to go get things investigated further," the nursing student said. "But on this occasion, I really wish that I had all the settings toggled on and noticed the changes and gone to the doctor sooner."

how to turn heart rate notifications on the Apple Watch on

(Image credit: Future/Tom's Guide)

How to turn on Apple Watch health notifications

But how do you turn on Apple Watch health notifications for yourself? Go to the Apple Watch app on your iPhone, tap ‘My Watch’ then scroll down to ‘Heart’. From here you should set up your ECG app to look for signs of atrial fibrillation, if you have an eligible Apple Watch. The Apple Watch 7 through Apple Watch 4 all have an ECG reader, but the Apple Watch SE does not.

Next, you should turn on cardio fitness notifications, which assess your cardio fitness and notify you when it's low. Lastly, enable irregular heart rate notifications. 

An Apple Watch has recently helped save a dentist's life with its heart rate monitoring function. So there's really no excuse to not be receiving health notifications from your Apple Watch, it could be a real lifesaver.  

Looking to invest in an Apple Watch? Here's your guide to the best Apple Watch for you, plus the best Apple Watch deals for saving money on a new smartwatch. If you're a runner, here's how to stop your Apple Watch from cutting your run short

TOPICS
Jane McGuire
Fitness editor

Jane McGuire is Tom's Guide's Fitness editor, which means she looks after everything fitness related - from running gear to yoga mats. An avid runner, Jane has tested and reviewed fitness products for the past five years, so knows what to look for when finding a good running watch or a pair of shorts with pockets big enough for your smartphone. When she's not pounding the pavements, you'll find Jane striding round the Surrey Hills, taking far too many photos of her puppy. 

Read more
The coolest things the Apple Watch can do
7 best Apple Watch features you're probably not using, but should
Google Pixel Watch 3
Google Pixel Watch 3 just got FDA approval for pulse detection feature — here's when it's coming
The Apple Watch Series 10 on a user's wrist showing a colorful orange and pink home screen
5 features to try first on your new Apple Watch
Apple Watch Ultra 2 on a person's wrist outside
Apple Watch Ultra 3 and Apple Watch 11 rumored to finally get this long-awaited health tracking feature
A photo of the Apple Watch 9 worn on the ankle
I tried the Apple Watch ankle trend — here’s why I’d never do it again
AirPods Pro 2 in charging case
AirPods Pro 3 could monitor your heart rate and temperature — what you need to know
Latest in Smartwatches
The coolest things the Apple Watch can do
A folding Apple Watch could follow the iPhone Flip — here’s what we know
Atari 2600 My Play Watch
It's not just Pebble — Atari is back with a watch that lets you play retro games on your wrist
Pebble Core 2 Duo and Core Time 2 smartwatches
Pebble is back with two new smartwatches starting at $149 — how to preorder
Garmin Fenix 8 Sleep
New data reveals the average Garmin sleep score — do you sleep better or worse than most people?
Garmin Fenix 8 deal
Act fast! Unexpected discount sees Garmin Fenix 8 drop to its lowest price on Amazon
The coolest things the Apple Watch can do
7 best Apple Watch features you're probably not using, but should
Latest in News
Rendered images of rumored foldable iPhone.
Foldable iPhone report just revealed key details — here's what we know
NYTimes Connections
NYT Connections today hints and answers — Saturday, March 23 (#651)
NYT Strands on a cellphone
NYT Strands today — hints, spangram and answers for game #385 (Sunday, March 23 2025)
Nintendo Switch 2
Nintendo Switch 2 rumored specs — here’s what we know so far
iPhone 17 Pro render
iPhone 17 Pro — 7 biggest rumored upgrades
CAD renderings of the Google Pixel 10 Pro XL
Pixel 10 leak could be good news for all Android phones