Toggle light / dark theme

Vitamin D plays an important role in the regulation of calcium and phosphorus absorption by the organism. It also helps keep the brain and immune system working. Researchers at the Federal University of São Carlos (UFSCar) in Brazil and University College London (UCL) in the United Kingdom have now shown that vitamin D supplementation reduces the risk of dynapenia in older people by 78%.

Dynapenia is an age-associated loss of muscle strength. It can be partially explained by muscle atrophy and is a major risk factor for physical incapacity later in life. People with dynapenia are more likely to fall, need to go to hospital, be prematurely institutionalized, and die.

An article on the study is published in the journal Calcified Tissue International and Musculoskeletal Research. The study was supported by FAPESP.

In his lively tour of longevity science and pseudoscience, Ward, a British reporter, discovers that researchers are largely not as interested in immortality per se as much as in helping us live fulfilling, active lives until our final day. And while some immortalists hope the culmination of this effort will eventually lead us to never finding that day, Ward leaves the question open.

He begins at the Church of Perpetual Life, a congregation of people who, instead of seeking paradise after death, would rather avoid their demise altogether. There, Ward meets Neal VanDeRee, the church’s pastor, who practices intermittent fasting and envisions a future in which biotechnology advances faster than our bodies break down.

VanDeRee is working to reach what he and other immortalists call “escape velocity” by extending their lives until biotechnology progresses fast enough to keep them alive forever. Another immortalist, Aubrey de Grey, sees this moment as surprisingly close — within 20 to 30 years, or maybe even sooner. It’s quite a claim, but is it possible? “Either we’ll discover we can make people healthy for longer but our lifespan is quite set, as most gerontologists believe, or de Grey’s longevity escape velocity will be proven correct,” Ward writes, never quite telling us which future he is betting on.

According to a recent paper by a math professor at the University of Arkansas, the existence of life on Earth provides proof that abiogenesis is relatively easy on planets similar to Earth, refuting the “Carter argument” conclusion.

Does the presence of life on Earth provide any insight into the likelihood that abiogenesis—the process by which life first emerges from inorganic substances—occurs elsewhere? That is a question that has baffled scientists for a while, as well as everyone else inclined to think about it.