Vitamin D supplements not beneficial for people over 70: Study

A popular fitness trend among young people may be quietly undermining their sleep. A new study led by researchers at the University of Toronto has found that teenagers and young adults who use pre-workout supplements are significantly more likely to experience extremely short sleep durations.

Scientists discovered that vitamin C from food travels through the bloodstream into every layer of the skin, boosting collagen and skin renewal.

The results: between 2000 and 2020, total butterfly abundance fell by 22 per cent across the 554 species counted. That means that for every five individual butterflies within the contiguous US in the year 2000, there were only four in 2020.

According to the World Health Organisation, around 3.9 per cent of the global population has had post-traumatic stress disorder (PTSD) at some point in their lives. That figure is greater in the United States, at over 6 per cent.

A new study led by researchers from Oxford Population Health has shown that a variety of environmental factors, including lifestyle choices (such as smoking and physical activity) and living conditions, have a more significant impact on health and premature death than our genes.

A new study shows that about two per cent of the population develop autoantibodies against type 1 interferons, mostly later in life. This makes individuals more susceptible to viral diseases like COVID-19. The study, conducted by University of Zurich (UZH) researchers together with a USZ team, is based on an analysis of a large collection of historical blood samples.

"We are talking about really small differences, so small that they may fall within what is considered normal blood pressure. The problem is that they tend to last your whole life," says PhD Candidate Karsten Ovretveit at the Norwegian University of Science and Technology's (NTNU) Department of Public Health and Nursing. He is one of the researchers behind a new study that has looked at the relationship between gene variants and blood pressure in the population.

Researchers used human retinas grown in a petri dish to discover how an offshoot of vitamin A produces the specialised cells that allow us to see millions of colours, a talent that dogs, cats, and other mammals lack.

Kiwifruit has proven to be a powerful mood booster, and new research from the University of Otago demonstrates how quickly its effects can occur.

According to new research, a common gut bacteria found in two-thirds of the world's population may be connected to an increased risk of Alzheimer's disease.