London, July 18: People who continue with their regular physical activities may have reduced risk of first and recurrent heart attack even in the areas with moderate-to-high levels of traffic pollution, a new study suggests.
The findings suggests that higher levels of nitrogen dioxide (NO2) -- a pollutant generated by traffic -- were associated with more heart attacks, but the risk was lower among those who were physically active.
"Our study shows that physical activity even during exposure to air pollution, in cities with levels similar to those in Copenhagen, can reduce the risk of heart attack," said lead author Nadine Kubesch from the University of Copenhagen.
For the study, published in Journal of the American Heart Association, the researchers in Denmark, Germany and Spain evaluated outdoor physical activity levels (sports, cycling, walking and gardening) and NO2 exposure in 51,868 adults aged between 50-65 years.
The researchers also compared self-reported activities and lifestyle factors against heart attack and to estimate average NO2 exposure, they used national traffic pollution monitoring data for each participants' address.
They found that moderate cycling for four or more hours per week cut risk for recurrent heart attack by 31 per cent and there was a 58 per cent reduction when all four types of physical activity (together totalling four hours per week or more) were combined, regardless of air quality.
Those who participated in sports had a 15 per cent lower rate of initial heart attacks and there was a nine per cent risk reduction associated with cycling, the researchers said.
Compared to participants with low residential NO2 exposure, those in higher risk areas had a 17 per cent increase risk in first heart attack and 39 per cent for recurrent heart attack, they added.
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Jaisalmer (PTI): Pushing for a "unified judicial policy", Chief Justice of India Surya Kant on Saturday said technology can help align standards and practices across courts, creating a "seamless experience" for citizens, regardless of their location.
He said high courts -- due to the federal structure -- have had their own practices and technological capacities, and "regional barriers" can be broken down with technology to create a more unified judicial ecosystem.
Delivering the keynote address at the West Zone Regional Conference in Jaisalmer, Kant proposed the idea of a "national judicial ecosystem" and called for an overhaul of India's judicial system with the integration of technology.
"Today, as technology reduces geographical barriers and enables convergence, it invites us to think of justice not as regional systems operating in parallel, but as one national ecosystem with shared standards, seamless interfaces, and coordinated goals," he said.
He emphasised how the role of technology in the judiciary has evolved over time.
"Technology is no longer merely an administrative convenience. It has evolved into a constitutional instrument that strengthens equality before the law, expands access to justice, and enhances institutional efficiency," he said, highlighting how digital tools can bridge gaps in the judicial system.
Kant pointed out that technology enables the judiciary to overcome the limitations of physical distance and bureaucratic hurdles.
"It allows the judiciary to transcend physical barriers and bureaucratic rigidities to deliver outcomes that are timely, transparent and principled," he said, adding that the effective use of technology can modernise the delivery of justice and make it more accessible to citizens across the country.
The CJI called for implementing a "unified judicial policy".
He said India's judicial system has long been shaped by its federal structure, and different high courts have their own practices and technological capacities.
"India's vast diversity has led to different high courts evolving their own practices, administrative priorities and technological capacities. This variation, though natural in a federal democracy, has resulted in uneven experiences for litigants across the country," he said.
Kant underscored that predictability is crucial for building trust in the judicial system.
"A core expectation citizens place upon the courts is predictability," he said, adding that citizens should not only expect fair treatment but also consistency in how cases are handled across the country.
He pointed to the potential of technology in improving predictability.
"Technology enables us to track systemic delays and make problems visible rather than concealed," he said.
By identifying areas where delays occur, such as in bail matters or cases involving certain types of disputes, courts can take targeted action to address these issues and improve efficiency, Kant said.
The CJI explained that data-driven tools could identify the reasons behind delays or bottlenecks, allowing for faster, more focused solutions.
"Technology enables prioritisation by flagging sensitive case categories, monitoring pendency in real time and ensuring transparent listing protocols," he said.
Justice Surya Kant also discussed the importance of prioritising urgent cases where delays could result in significant harm. He highlighted his recent administrative order that ensures urgent cases, such as bail petitions or habeas corpus cases, are listed within two days of curing defects.
"Where delay causes deep harm, the system must respond with urgency," he stated, explaining that technology can help courts identify and expedite such cases.
Kant also raised the issue of the clarity of judicial decisions.
He noted that many litigants, despite winning cases, often struggle to understand the terms of their judgment due to complex legal language.
"Although the orders had gone in their favour, they remained unsure of what relief they had actually secured because the language was too technical, vague or evasive to understand," he said.
He advocated for more uniformity in how judgments are written.
"A unified judicial approach must therefore extend to how we communicate outcomes," he said.
The CJI also discussed the role of AI and digital tools in improving case management. He pointed to the potential of AI-based research assistants and digital case management systems to streamline judicial processes.
"Emerging technological tools are now capable of performing once-unthinkable functions. They can highlight missing precedent references, cluster similar legal questions, and simplify factual narration," he said, explaining how these technologies can help judges make more consistent decisions.
He also highlighted tools like the National Judicial Data Grid and e-courts, which are already helping to standardise processes like case filings and tracking.
Kant reiterated that the integration of technology into the judicial process is not just about improving efficiency but about upholding the integrity of the system and strengthening public trust.
"The measure of innovation is not the complexity of the software we deploy, but the simplicity with which a citizen understands the outcome of their case and believes that justice has been served," he said.
