Why can fans make the elderly hotter in extreme heat

As the population of New York Sweat through heat is not relevant This summer, many prepare electricity fans in a desperate relief attempt.

But a A new shock study Cold water dictates the famous cooling repair, warning that it may actually bring in reverse results for older adults under certain circumstances.

The researchers found that in some powerful environments, the fan can sit in front of the excess body temperature in the elderly – the position of the grandmother and the grandfather in a greater danger of stroke and others Serious health problems.

The study, conducted by scientists in Australia and Canada, tested how electric fans affect older adults under dry and wet heat conditions.

In the first stage, 31 adults between the ages of 60 years and over the hot dry air – 100.4 degrees Fahrenheit with only 15 % moisture – simulated severe interior wave conditions.

Each participant completes four separate sessions for at least three hours far apart: a fan only, moisturizing the skin without a fan, moisturizing the skin with a fan, and does not enter.

Instead of cooling it, the use of the fan in the dry heat causes the basic body temperatures to increase the participants by 0.5 degrees Fahrenheit. They also reported the feeling of mockery and less comfort.

The results indicate that, instead of cooling the body, the fan was in reality the heat.

Previous research From the same team, the team found that fans who are used in dry hot conditions three times doubled the heart breed in the elderly – a fatal result of people with heart disease.

The authors of the study wrote: “In a very hot and dry heat, the fan’s use of all results has increased and must be installed for these conditions.”

The second stage of the study focused on wet hot conditions. This time, the researchers included 58 older adults – including 27 with a history of coronary artery disease, who were excluded from dry heat tests due to Possible heart risks.

In these tests, room temperatures again reached 100.4 degrees Fahrenheit, but with 60 % moisture.

Unlike the dry heat, the use of the fan in wet conditions has decreased slightly from the basic temperatures of the participants at a rate of 0.18 degrees Fahrenheit. It also strengthened sweating and making the participants feel cooler and more comfortable in general.

and Previous study Through the same team, the team showed that fans – with or without moisturizing the skin – also helped reduce heart stress under similar wet conditions.

The researchers say together the challenge of the results CDC instructions This is advised not to use fans when temperatures exceed 90 degrees Fahrenheit, noting a possible increase in body temperature and relevant health risks.

“Although air conditioning is an effective way to survive, it is not available to everyone, especially those who are more likely to heat like the elderly and people who suffer from heart disease-so positive news is that low-cost alternatives, Dr. Daniel Ghania, a researcher at the Montreal Heart Institute and participated in both studies in both studies, He said last year.

“More importantly, the study showed that weather conditions affect the type of cooling strategy that must be used – a vital part of the information that will help the elderly stay safe in heat waves.”

Heat waves are It becomes more frequent Through the major American cities – and more dangerous, it provides temperatures overnightly a little satisfaction from today’s temperature.

Every year, and Estimated 60,000 Americans It ends in the emergency room due to heat-related diseases such as heat exhausting and stroke-and more than 13 % of these cases require hospitalization, according to American Medical Association.

In New York City, the risk is already turned on. On June 25, record record 99 degrees Fahrenheit 141 people were sent to emergency rooms with heat-related problems- Total total day Since 2017.

The intense heat is the most risk associated with the weather in the United States, with more than 14,000 deaths It is directly associated with heat since 1979. But experts warn that the real outcome may be much higher, as heat is often reported or ignored as a contributing factor.

In New York alone, More than 500 people It is premature every summer due to the intense heat – the vast majority inside their homes without air conditioning.

The city runs cooling centers to help the weak population, but for those who rely on electric fans at home, the new search shows one thing: check moisture.

If it is dry, this fan may leave you hotter than before.