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Hot weather makes you angrier and violent: Study

Do you get angry when the weather turns hot?  Now, here's a theory that explains why our mood changes during summers.

A research team in Poland conducted a study to find the link between rising temperature and stress levels, and they revealed that cortisol, the stress hormone, rises during summers due to heat. Cortisol, which regulate salt, fluid and sugar across the body, is lower in winter.


Pathophysiologist Dr Dominika Kanikowska of Poznan University of Medical Sciences said more cortisol was seen circulating in the body during warm weather. "These non-intuitive findings contradict traditional concepts of the taxing physical toll of winter and the relaxed ease of summer," Kanikowska shared.
Their research also showed that criminals engaged in increased violence when the climate was warmer.
Interestingly, this isn't the first experiment attempting to find the connection between warm weather and mood swings. According to Nancy Molitor, an assistant professor of clinical psychiatry and behavioral science at Northwestern University Feinberg School of Medicine, everyone's fuse is going to be a bit shorter during summers due to myriad of reasons including sleeping trouble, dehydration and restrictions on our daily activities.
A lack of control over the situation may further irritate some people, she said, according to Live Science.

Molitor advises people to avoid making any important decisions if the summer heat makes you feel irritated, as one might regret the choice later.

To avoid mood swings, it's important to stay hydrated throughout the day. If you want to workout, make sure to do it in the morning or in the evening when the weather is cooler.

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Racist incidents against NHS nurses rise 78 per cent

The RCN says calls from ethnic minority nurses reporting racism rose by 70 per cent between 2022 and 2025

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Racist incidents against NHS nurses rise 78 per cent

Highlights

  • Nursing staff reported 6,812 racist incidents in 2025, up from 3,652 in 2022.
  • RCN warns real figures are far higher due to widespread under-reporting.
  • From October, NHS employers will be legally liable for harassment of staff by patients.
Racist abuse against NHS nurses has gone up sharply. New figures show a 78 per cent rise in reported incidents over the past four years.
The Royal College of Nursing gathered this data through Freedom of Information requests sent to NHS trusts and health boards across the UK.
The findings show that nursing staff reported more than 21,000 incidents of racial abuse between 2022 and 2025. In 2025 alone, there were 6,812 incidents, up from 3,652 in 2022.
That means a new report of racist abuse was being made every 77 minutes somewhere in the NHS.

The incidents paint a disturbing picture of what many nurses face on a daily basis. One nurse was called a monkey by a colleague.

A patient threw a hot drink at a nurse and then followed it with racial abuse. In one case, a patient's family said they did not want black nurses looking after their relative.

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