Taking a daily multivitamin does not help people to live any longer and may actually increase the risk of an early death, a major study has found.

Researchers in the US analysed health records from nearly 400,000 adults with no major long-term diseases to see whether daily multivitamins reduced their risk of death over the next two decades.

Rather than living longer, people who consumed daily multivitamins were marginally more likely than non-users to die in the study period, prompting the government researchers to comment that “multivitamin use to improve longevity is not supported”.

Nearly half of UK adults take multivitamins or dietary supplements once a week or more, part of a domestic market worth more than half a billion pounds annually. The global market for the supplements is estimated to be worth tens of billions of dollars each year. In the US, a third of adults use multivitamins in the hope of preventing disease.

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The annual Muslim pilgrimage to the sacred city of Mecca that wrapped up last week became a death march for over 1,300 Hajj participants who died in temperatures that climbed above 124 degrees.

Saudi Arabia's health minister Fahad Al-Jalajel, who on Sunday announced a death total of 1,301, blamed the fatalities on pilgrims "walking long distances under direct sunlight without adequate shelter or comfort."

The 5-6 day odyssey of hiking and prayer drew almost 2 million pilgrims from around the world. Fatalities included a number of elderly people and those suffering from chronic diseases, A-Jalajel said. About  83% of the fatalities were among people who were not authorized to make the pilgrimage, he said.

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The US government, in a report published on Tuesday, acknowledged for the first time the harms that federal dams have inflicted on Native American tribes in the US Pacific north-west.

The report by the interior department details the “historic, ongoing and cumulative impacts of federal Columbia River dams on Columbia River Basin Tribes”, including how dams on the Columbia and Snake Rivers have devastated salmon runs, inundated villages and burial grounds, and deprived tribal members of the ability to exercise traditional ways of life.

The Columbia River basin, an area roughly the size of Texas, historically supported abundant wild salmon, which play an important role in tribal identity and spirituality, as well as steelhead and native resident fish.

The construction of large hydroelectric dams throughout the basin at the turn of the 20th century impeded fish migration and flooded entire villages and towns, forcing people to relocate and transforming the ecosystem.

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One evening in 2019, Janice Blanock was scrolling through Facebook when she heard a stranger mention her son in a video on her feed. Luke, an outgoing high school athlete, had died three years earlier at age 19 from Ewing’s sarcoma, a rare bone cancer.

Blanock had come across a live stream of a community meeting to discuss rare cancers that were occurring with alarming frequency in south-western Pennsylvania, where she lives.

Between 2009 and 2019, five other students in Blanock’s school district were also diagnosed with Ewing’s sarcoma. (The region saw about 30 overall cases of the cancer during that time.) In the video, health experts and residents were talking about whether the uptick in illnesses was related to fracking. Blanock was riveted.

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Leonard Peltier, a Native American activist who has served nearly 50 years in prison for the killing of two FBI agents, was due to have his first parole hearing since 2009 on Monday, his lawyer said.

Peltier, 79, has maintained that he did not kill the FBI special agents Jack Coler and Ronald Williams in 1975 on the Pine Ridge Indian Reservation. Advocates, including figures such as the late Nelson Mandela and a former prosecutor and judge involved in his case, have long said he should be freed because of what they call legal irregularities in his trial.

The Biden administration's proposal for a cease-fire in Gaza received the United Nations' endorsement Monday when the Security Council voted 14-0 in favor of a resolution supporting the plan, with only Russia abstaining but not vetoing. Still, acceptance by the warring parties remains elusive.

The U.S. drafted the measure and finalized it Sunday after six days of negotiations among council members. The three-stage proposal would bring about an immediate stop in the fighting between Israel and Hamas, along with the release of hostages in exchange for Palestinians prisoners.

Israeli Prime Minister Benjamin Netanyahu has expressed misgivings about the version of the plan President Joe Biden made public May 31, though the White House has said Israel was involved in crafting it. Netanyahu is under pressure from the far-right flank of his governing coalition to continue the war, and in addition to the truce the proposal calls for the withdrawal of Israeli troops from Gaza and, in the second phase, a permanent end to the conflict.

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Scientists in Bolivia are hoping to track glacial changes at lightning speed.

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