Health
Apple Watch to Launch Hypertension Detection Feature Amid Expert Caution
Apple is preparing to roll out a new feature for its smartwatch that it says could help identify millions of people living with undiagnosed high blood pressure. But cardiologists are warning users not to over-rely on the technology, stressing that the alerts should not replace traditional medical assessments.
The new function, which is pending regulatory approval, will use the Apple Watch’s light sensor to analyze how a wearer’s blood vessels respond to their heartbeat. If the system consistently detects patterns associated with hypertension, or chronic high blood pressure, it will issue an alert.
Unlike a conventional blood pressure cuff, the smartwatch will not provide specific readings. Instead, users who receive alerts will be encouraged to monitor their blood pressure with a cuff over a week and consult a doctor with the results. Apple said it expects to identify more than one million cases of previously undiagnosed hypertension in the feature’s first year.
Hypertension is one of the world’s most widespread but often silent health risks. The World Health Organization estimates that around 1.3 billion adults globally have high blood pressure, but nearly half remain unaware of their condition. Left untreated, hypertension significantly increases the likelihood of heart attacks, strokes, and kidney disease.
Apple plans to introduce the feature in more than 150 countries and regions, including the European Union, once approval is granted. It will be available on the Apple Watch Series 9 and later models, including the Apple Watch Ultra 2 running watchOS 26.
Health experts say that while the innovation could raise awareness, it comes with clear limitations. Dr. Felix Mahfoud, chair of the cardiology department at the University Hospital Basel in Switzerland, cautioned that smartwatch alerts should not be mistaken for precise medical measurements.
“I can tell you what it means if we measure your blood pressure in a doctor’s office, in terms of your risk of stroke and other health issues,” Mahfoud said. “But all this is basically unknown for detection by smartwatches. No one should ever base any treatment or management decision on a smartwatch.”
Apple’s own trials, involving over 2,200 participants, highlighted both the promise and the constraints of the feature. The watch demonstrated a sensitivity rate of around 41 percent — meaning it correctly identified less than half of hypertension cases — and a specificity rate of about 92 percent, suggesting a low likelihood of false alarms.
The company has also emphasized that the feature is not suitable for everyone. It will not be recommended for people under 22, pregnant women, or those already diagnosed with hypertension.
Still, experts believe it could play a valuable role in increasing public awareness. “It’s great if we can increase awareness of hypertension, and hopefully these tools will do that,” Mahfoud said.
Health
Global Mental Health Cases Near 1.2 Billion as Anxiety and Depression Drive Sharp Worldwide Rise
A major global analysis has found that mental health conditions have surged to an estimated 1.2 billion people worldwide, driven largely by steep increases in anxiety and depression over the past three decades.
The findings, published in The Lancet as part of the Global Burden of Disease Study 2023, show that the number of people living with mental disorders has almost doubled since 1990, marking a 95% rise. Researchers say major depressive disorder and anxiety disorders have seen even sharper growth, increasing by 131% and 158% respectively, making them the most prevalent mental health conditions globally.
The report describes mental illnesses as widespread conditions that create long-term disability and significant human suffering. It also highlights broader consequences for economies and public services, including reduced productivity, lower workforce participation and increasing pressure on health and welfare systems.
Researchers estimate that in 2023 alone, around 620 million females and 552 million males were affected by mental health conditions. While the overall burden is rising across both sexes, the study points to notable differences in the types and prevalence of disorders.
Among women, depression and anxiety were the most commonly reported conditions, alongside higher rates of eating disorders such as anorexia nervosa and bulimia nervosa. The report links this disparity to a mix of biological, social and structural factors, including exposure to domestic violence, sexual abuse, gender inequality and reproductive health-related changes.
In contrast, neurodevelopmental and behavioural disorders, including attention deficit hyperactivity disorder (ADHD), conduct disorder and autism spectrum conditions, were more frequently diagnosed in men.
Teenagers aged 15 to 19 were identified as the group experiencing the highest mental health burden globally, raising concerns about early onset of conditions and insufficient preventive care for young people.
The study identifies several key risk factors associated with mental illness, including childhood sexual violence, bullying and intimate partner violence. These factors are strongly linked to conditions such as depression, schizophrenia, bipolar disorder and anxiety disorders. However, researchers note that such exposures have remained relatively stable over time and account for only a portion of the overall rise.
According to the authors, broader drivers are likely contributing to the increasing prevalence of mental disorders. These include genetic and biological influences, poverty, inequality, and the growing impact of global crises such as armed conflict, pandemics, natural disasters and climate-related stress.
While mental health conditions have long been a leading cause of disability worldwide, the report warns that the situation is worsening. At the same time, health systems have not expanded services at a pace matching demand.
The authors caution that the gap between rising need and limited access to care is becoming more pronounced, leaving millions without adequate treatment or support.
Health
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Health
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