Tag Archives: Studies

STUDIES: CHRONIC SLEEP DEPRIVATION CAUSES TOXIC CHANGES IN GUT HEALTH, INCREASED EARLY MORTALITY

From Harvard Medical School (June 4, 2020):

“We took an unbiased approach and searched throughout the body for indicators of damage from sleep deprivation. We were surprised to find it was the gut that plays a key role in causing death,” said senior study author Dragana Rogulja, assistant professor of neurobiology in the Blavatnik Institute at HMS.

The first signs of insufficient sleep are universally familiar. There’s tiredness and fatigue, difficulty concentrating, perhaps irritability or even tired giggles. Far fewer people have experienced the effects of prolonged sleep deprivation, including disorientation, paranoia, and hallucinations.

Total, prolonged sleep deprivation, however, can be fatal. While it has been reported in humans only anecdotally, a widely cited study in rats conducted by Chicago-based researchers in 1989 showed that a total lack of sleep inevitably leads to death. Yet, despite decades of study, a central question has remained unsolved: Why do animals die when they don’t sleep?

Now, Harvard Medical School (HMS) neuroscientists have identified an unexpected, causal link between sleep deprivation and premature death.

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STUDY: “INTENSIVE DIET AND EXERCISE” REVERSES TYPE 2 DIABETES IN 61% OF PATIENTS

From The Lancet Diabetes & Endocrinology (June 2020):

Our findings show that the intensive lifestyle intervention led to significant weight loss at 12 months, and was associated with diabetes remission in over 60% of participants and normoglycaemia in over 30% of participants. The provision of this lifestyle intervention could allow a large proportion of young individuals with early diabetes to achieve improvements in key cardiometabolic outcomes, with potential long-term benefits for health and wellbeing.

The Lancet Diabetes & Endocrinology

Type 2 diabetes is affecting people at an increasingly younger age, particularly in the Middle East and in north Africa. We aimed to assess whether an intensive lifestyle intervention would lead to significant weight loss and improved glycaemia in young individuals with early diabetes..Between July 16, 2017, and Sept 30, 2018, we enrolled and randomly assigned 158 participants (n=79 in each group) to the study. 147 participants (70 in the intervention group and 77 in the control group) were included in the final intention-to-treat analysis population. Between baseline and 12 months, the mean bodyweight of participants in the intervention group reduced by 11·98 kg (95% CI 9·72 to 14·23) compared with 3·98 kg (2·78 to 5·18) in the control group (adjusted mean difference −6·08 kg [95% CI −8·37 to −3·79], p<0·0001). In the intervention group, 21% of participants achieved more than 15% weight loss between baseline and 12 months compared with 1% of participants in the control group (p<0·0001). Diabetes remission occurred in 61% of participants in the intervention group compared with 12% of those in the control group (odds ratio [OR] 12·03 [95% CI 5·17 to 28·03], p<0·0001). 33% of participants in the intervention group had normoglycaemia compared with 4% of participants in the control group (OR 12·07 [3·43 to 42·45], p<0·0001)

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CORONAVIRUS: CONFUSING HYDROXYCHLOROQUINE STUDIES (NATURE PODCAST)

President Trump’s preferred coronavirus treatment is the focus of a new study suggesting it could cause more harm than good, but not everybody agrees. We discuss the fallout as trials around the world are paused and countries diverge over policy advice.

12:12 Are we rushing science?

Coronavirus papers are being published extremely quickly, while normally healthy scientific debate is being blown up in the world’s press. Is there a balancing act between timely research and accurate messaging?

18:49 One good thing

Our hosts pick out things that have made them smile in the last week, including hedgerow brews and a trip into the past using AI.

Recipe: Elderflower ‘Champagne’

Video: Denis Shiryaev restores historic footage with AI

22:30 The latest coronavirus research papers

Noah Baker takes a look through some of the key coronavirus papers of the last few weeks.

News: Coronavirus research updates

medRxiv: Full genome viral sequences inform patterns of SARS-CoV-2 spread into and within Israel

Harvard Library: Reductions in commuting mobility predict geographic differences in SARS-CoV-2 prevalence in New York City

Science: DNA vaccine protection against SARS-CoV-2 in rhesus macaques