Japan's rainy season carries hidden danger of heatstroke
The heat is expected to remain at its peak until around June 20 in many places. PHOTO: AFP
A high pressure system raised temperatures across Japan on June 17 morning, causing intense summer-like heat despite the rainy season.
The heat is expected to remain at its peak until around June 20 in many places, the Japan Meteorological Agency said.
'The rainy season carries a risk of heatstroke due to high humidity,' said Saitama Jikei Hospital deputy director Tsuyoshi Fujinaga, an expert on the condition. He warned that many people are not yet accustomed to the heat and tend to get careless about the danger during this season.
From May to June 8, 3,833 people were taken to hospitals due to heatstroke, according to preliminary figures from the Fire and Disaster Management Agency.
That figure is higher than the 3,665 recorded during the same period last summer, which ended up seeing a total of 97,578 sent to hospitals for heatstroke between May and September, the highest since statistics began in 2008.
The report showed that 27.8 per cent of heatstroke cases occurred at home, followed by 20.2 per cent on streets and 14.7 per cent on outdoor train platforms and in parking lots.
This month, an 86-year-old woman in Koto Ward, Tokyo, was diagnosed with mild heatstroke after experiencing headaches and nausea while taking a nap in her living room. She had kept the windows closed all day due to rain but avoided using the air conditioner as 'It's not summer yet.'
Mr Fujinaga said heatstroke in the rainy season is caused by high humidity, which makes it difficult for sweat to evaporate, resulting in the body retaining more heat.
It is also important to be aware of hidden dehydration, in which the body loses water unnoticed, he said. High humidity keeps people from feeling thirsty, allowing them to dehydrate unnoticed and increase the risk of heatstroke.
'Heatstroke in the rainy season progresses gradually, and you hardly notice something is wrong,' he said. 'Don't let your guard down just because it's not summer yet.' THE JAPAN NEWS/ASIA NEWS NETWORK
Join ST's Telegram channel and get the latest breaking news delivered to you.
Hashtags

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles

Straits Times
18 hours ago
- Straits Times
Earthquake of magnitude 5.4 strikes near coast of Ecuador, GFZ says
Earthquake of magnitude 5.4 strikes near coast of Ecuador, GFZ says GUAYAQUIL - A magnitude 5.4 earthquake struck near the coast of Ecuador on Saturday, the German Research Centre for Geosciences (GFZ) said. The quake was at a depth of 44 km (27.34 miles), GFZ said. The tremor was felt in Guayaquil, Ecuador's largest city by population, though there were no immediate reports of damage. Key city systems were operating normally and inspections were ongoing to ensure public safety, the mayor of Guayaquil, Aquiles Alvarez, said in a post on social media. REUTERS Join ST's Telegram channel and get the latest breaking news delivered to you.

Straits Times
a day ago
- Straits Times
French scientists find new blood type in Guadeloupe woman
A woman from the Caribbean island of Guadeloupe is the only known carrier of a new blood type, dubbed 'Gwada negative". PHOTO: ISTOCKPHOTO BASSE-TERRE - A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type, dubbed 'Gwada negative', France's blood supply agency has announced. The announcement was made 15 years after researchers received a blood sample from a patient who was undergoing routine tests ahead of surgery, the French Blood Establishment (EFS) said on June 20. 'The EFS has just discovered the 48th blood group system in the world!' the agency said, in a statement on social network LinkedIn. 'This discovery was officially recognised in early June in Milan by the International Society of Blood Transfusion (ISBT).' The scientific association had until now recognised 47 blood group systems. Dr Thierry Peyrard, a medical biologist at the EFS involved in the discovery, told AFP that a 'very unusual' antibody was first found in the patient in 2011. However, resources at the time did not allow for further research, he added. Scientists were finally able to unravel the mystery in 2019 thanks to 'high-throughput DNA sequencing', which highlighted a genetic mutation, Dr Peyrard said. The patient, who was 54 at the time and lived in Paris, was undergoing routine tests before surgery when the unknown antibody was detected, Dr Peyrard said. This woman 'is undoubtedly the only known case in the world,' said the expert. 'She is the only person in the world who is compatible with herself,' he said. Dr Peyrard said the woman inherited the blood type from her father and mother, who each had the mutated gene. The name 'Gwada negative', which refers to the patient's origins and 'sounds good in all languages', has been popular with the experts, said Dr Peyrard. The ABO blood group system was first discovered in the early 1900s. Thanks to DNA sequencing, the discovery of new blood groups has accelerated in recent years. Dr Peyrard and colleagues are now hoping to find other people with the same blood group. 'Discovering new blood groups means offering patients with rare blood types a better level of care,' the EFS said. AFP Join ST's Telegram channel and get the latest breaking news delivered to you.

Straits Times
a day ago
- Straits Times
Thunderstruck: After heat, Club World Cup weathers storms and threat of lightning
From stifling heat to thunderstorms, the Club World Cup has been at the mercy of the extremes of the American summer, with the threat of lightning now forcing players to retreat to the tunnels while fans seek shelter as matches are suddenly halted. While soaring temperatures and oppressive humidity initially fuelled concerns among players and fans, it is the crackling skies and pouring rain that have emerged as the tournament's most disruptive forces. Friday's match in Orlando between Benfica and Auckland City was suspended after halftime for nearly two hours due to a lightning storm in the area. At the same venue on Tuesday, fans had barely settled into their seats when the referee ordered Ulsan HD and Mamelodi Sundowns to return to the dressing rooms, with the match delayed for more than an hour due to the threat of lightning. Cincinnati witnessed an even longer interruption when a severe thunderstorm suspended Red Bull Salzburg's clash with Pachuca for more than 90 minutes. Palmeiras and Al Ahly saw their contest in New Jersey halted for 50 minutes due to lightning near MetLife Stadium. "Your attention please. For your safety, we are going to have everyone leave the Seating Bowl area and take shelter inside the stadium because of severe weather in the area," said a safety message flashed on the big screens in the arena. "Event staff are available to guide and assist you. Those on the field, please walk calmly to the nearest tunnel... or to the service corridor." THREAT OF LIGHTNING Heavy rain is often the X-factor for the home side on a cold, wet night in Stoke -- which lends itself to the famous English soccer cliche -- but the same cannot be said in the United States. According to the country's National Weather Service (NWS), 75% of lightning-related deaths in the last decade occurred from June to August. Meteorological challenges are nothing new but with the combination of sweltering humidity followed by electrical storms, the simple yet stark warning from the NWS rings particularly true -- "When thunder roars, go indoors!" Tournament organisers FIFA have weather protocols in place to ensure the safety of those on the pitch and in the stands. If there is lightning within 10 miles (16.09 km) of the stadium, an automatic match suspension is triggered. The match director is informed, who in turn asks the referee to stop play. The storm is monitored before players are called back out, with the warm-up time before the restart dictated by the time they spent off the pitch. Fans are also asked to leave the stands and find shelter in the concourse, with one source saying the stadiums had the capacity to keep them inside until the storm passed. REUTERS Join ST's Telegram channel and get the latest breaking news delivered to you.