For 50 year olds, sleeping on a pillow this high is best to prevent stroke and live long.

Japanese researchers have found that this sleeping position increases the risk of stroke due to the neck being bent while sleeping, according to the Asahi Shimbun (Japan).

Scientists from the National Brain and Cardiovascular Center in Japan studied cases of spontaneous vertebral artery dissection (sVAD), a blood vessel rupture in the back of the neck that causes stroke, with the height of the patient's sleeping pillow.

Người 50 tuổi ngủ gối cao chừng này là tốt nhất để phòng đột quỵ, sống thọ- Ảnh 1. — New research has discovered the unpredictable harm of sleeping with a high pillow.

Overall, sVAD causes about 2% of strokes. But for people aged 15 to 45, the rate increases to 10%.

The new study included 53 people aged 45 to 56 with sVADs at the National Cerebral and Cardiovascular Center in Japan from 2018 to 2023.

Participants were compared with 53 people hospitalized for stroke or brain hemorrhage from other causes during the same period.

Specifically, the study focused on gender, age, and pillow height.

Based on the opinions of industry experts, the research team classified pillows by height as follows: Pillows 12 cm or higher are "high"; Pillows 15 cm or higher are "extra high".

Results found that up to 34 percent of sVAD patients used pillows of 12 centimeters or more, compared with only 15 percent in the control group, according to Asahi Shimbun.

Additionally, 17% of sVAD patients used a pillow 15 cm or more, compared with only 1.9% in the control group.

The higher the pillow, the higher the risk of sVAD, the researchers said.

Người 50 tuổi ngủ gối cao chừng này là tốt nhất để phòng đột quỵ, sống thọ- Ảnh 2. — Sleeping with a high pillow increases the risk of stroke due to the neck being bent while sleeping

The study concluded that high pillows increase neck flexion, pulling the chin toward the chest. This position can tear blood vessels if the neck is turned while sleeping.

Research team member Tomotaka Tanaka, a neurosurgeon, said: It is advisable to limit the use of pillows higher than 15 cm because even soft pillows can cause severe neck curvature.

The authors named this condition "shogun's pillow syndrome". In Japan, from the 17th to the 19th century, pillows as high as 12-16 cm were called "shogun's pillows" because shoguns, samurai (warriors) and geisha widely used these high pillows to maintain their traditional hairstyles that required care.

Several essays published in the mid-19th century suggested that pillows about 12 centimeters high were comfortable. However, pillows as low as 9 centimeters were better for longevity, the report said, according to Asahi Shimbun.

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