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Sesame oil? Granite baths? Sea lettuce? COVID-19 rumors spread like a virus in Japan

Mar 09, 2020 (Japan Times) - Can applying sesame oil stop the new coronavirus from entering the body? Is it true that a hot water and granite rock bath will help kill the virus? Does taking vitamin D make people less susceptible to the pathogen?

In a nation gripped by fear amid the COVID-19 outbreak, rumors swirling online that appear to have little or no scientific justification have, at times, persuaded people to flock to e-commerce websites in search of items touted — often falsely — as effective against the new coronavirus.

Some of these claims are simple misconceptions, but others are more sinister and deliberate, finding their way into inboxes as spam email containing malware.

The health ministry and cybersecurity firm Trend Micro are already urging caution against a few examples of what they say is a campaign of disinformation, including a text message claiming to give away free face masks, and encouraging recipients to click a link leading to an illicit site.

Be it misinformation or disinformation, what are some of the most prominent COVID-19 myths that have caught the attention of the Japanese public so far? Are they all absolute nonsense or is there a kernel of truth somewhere? And what health tips do experts have to offer in lieu of those misguided bits of knowledge to help us better fight the virus?

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Japan’s World Cup campaign ended in the cruelest possible fashion on June 29, as Gabriel Martinelli scored in the fifth minute of stoppage time to give Brazil a 2-1 victory over the Samurai Blue in their knockout match in Houston. Japan had led in the first half and were still level at 1-1 in the final moments, but Martinelli’s late strike sent Brazil into the Round of 16 and eliminated Japan from the tournament.

Strong earthquakes have continued to shake parts of Japan in recent weeks, with 11 temblors measuring lower 5 or above on the Japanese seismic intensity scale recorded across the country since April 2026.

A Kintetsu Railway train derailed inside Kyoto Station on the morning of June 29, forcing partial suspensions on the Kintetsu Kyoto Line for the rest of the day and causing long delays that hit commuters, students and tourists.

A section of stone wall at Hikone Castle, one of Japan’s few surviving original Edo-period castles and a National Treasure whose main keep remains intact more than 400 years after its construction, collapsed after heavy rain caused by Typhoons No. 7 and No. 8, Hikone city officials said.

Japan advanced to the knockout stage of the World Cup after a 1-1 draw with Sweden on June 25, finishing second in Group F and setting up a Round of 32 clash with Brazil in Houston.

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Prosecutors sought life imprisonment for Yukio Tanaka, a senior member of a gang affiliated with the Kudo-kai crime syndicate, as his trial over the 2013 fatal shooting of Osho Food Service president Takayuki Ohigashi concluded at the Kyoto District Court, with a verdict scheduled to be handed down on October 16.

Shinjuku Ward, the Tokyo metropolitan government and the Tokyo Metropolitan Police Department have jointly established a Kabukicho measures council to strengthen efforts to prevent young people known as "Toyoko Kids" from being drawn into crime in Tokyo’s Shinjuku district.

A 23-year-old Chinese man has been arrested and sent to prosecutors on suspicion of dangerous driving resulting in injury after allegedly crashing a Porsche into two vehicles at an intersection in Tokyo’s Bunkyo Ward on June 9, leaving three people with minor injuries.

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A 50-year-old woman has been arrested in Kobe on suspicion of abandoning the dismembered body of her former husband in a large freezer at a condominium unit, where she allegedly continued paying rent for more than 14 years while hiding his death.

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An Iranian national has been arrested on suspicion of attempting to smuggle more than 40 kilograms of stimulants from the United Arab Emirates into Japan in March, after customs officers found the drugs hidden in the bottom section of a machine used in the process of making naan bread.