Tim Newman
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Keen on science, nature, heavy metal, and dinosaurs. Twin dad. Senior News Editor at medicalnewstoday.com (views are my own).
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Articles by Tim Newman
More dream sleep linked to lower risk of 83 diseases, including diabetes Original
Share on Pinterest Not just more sleep, but longer dream sleep is linked to a lower disease risk, a new study suggests. Maskot/ Getty Images A new large-scale study investigates the associations between sleep duration and disease risk. Participants wore wrist accelerometers for 1 week to assess not only their sleep duration, but also how long they spent in different phases of the sleep cycle.
More dream sleep linked to lower risk of 83 diseases, including diabetes
Not just more sleep, but longer dream sleep is linked to a lower disease risk, a new study suggests. Maskot/ Getty Images A new large-scale study investigates the associations between sleep duration and disease risk. Participants wore wrist accelerometers for 1 week to assess not only their sleep duration, but also how long they spent in different phases of the sleep cycle.
Death by mutation: Attempts to extend life will eventually hit the brick wall of accumulating damaged cells
2026 Credibility and Reputation Report The GLP is committed to full transparency. Download the report. Global Gene Editing Regulation Tracker Our interactive GLP global map explains the status of each country’s regulations for human and agricultural gene editing and gene drives. GLP 2021 Annual Report The GLP is committed to full transparency. Download our 2021 Annual Report. Tim Newman | Medical News Today | August 12, 2026 XLinkedInFacebookRedditBlueskyThreadsSMS Image: Michael S.
Humans could survive up to 194 years without major diseases, study suggests Original
Share on Pinterest Have scientists discovered a new limit for human life span? DMP/ Getty Images A new paper investigates how the slow accumulation of certain mutations in DNA affects human life span. Called somatic mutations, they begin accumulating in cells from birth. The study shows that mutations in certain cell types, such as neurons, may be a key factor in defining a human’s maximum possible age.
Humans could survive up to 194 years without major diseases, study suggests
Have scientists discovered a new limit for human life span? DMP/ Getty Images A new paper investigates how the slow accumulation of certain mutations in DNA affects human life span. Called somatic mutations, they begin accumulating in cells from birth. The study shows that mutations in certain cell types, such as neurons, may be a key factor in defining a human’s maximum possible age.
Dementia: New WHO guidelines show how to prevent up to 45% of cases
Lifestyle changes are crucial to dementia prevention, new WHO guidelines state. Image credit: Me 3645 Studio/ Getty Images The World Health Organization (WHO) has released a second edition of its guidelines on reducing the risk of dementia and cognitive decline. According to the authors, up to 45% of dementia cases globally could be delayed or even prevented.
Dementia: New WHO guidelines show how to prevent up to 45% of cases Original
Share on Pinterest Lifestyle changes are crucial to dementia prevention, new WHO guidelines state. Image credit: Me 3645 Studio/ Getty Images The World Health Organization (WHO) has released a second edition of its guidelines on reducing the risk of dementia and cognitive decline. According to the authors, up to 45% of dementia cases globally could be delayed or even prevented.
Brain cell changes may explain why Parkinson's affects more men than women Original
Parkinson’s disease affects males more often than females, and a new study sheds light on why this might be. The study concludes that genetic changes in brain cells may provide a clue. In particular, the researchers conclude that epigenetic changes based on an individual’s genetic makeup might be particularly important. Better understanding sex differences in Parkinson’s disease will hopefully help scientists understand the condition and design more effective treatments.
Brain cell changes may explain why Parkinson's affects more men than women
Parkinson’s disease affects males more often than females, and a new study sheds light on why this might be. The study concludes that genetic changes in brain cells may provide a clue. In particular, the researchers conclude that epigenetic changes based on an individual’s genetic makeup might be particularly important. Better understanding sex differences in Parkinson’s disease will hopefully help scientists understand the condition and design more effective treatments.
Large psilocybin dose briefly improved dementia in case study: What to know
‘Magic mushrooms’ helped a woman with advanced dementia but is psilocybin a good idea? Image credit: Maskot/Getty Images A new case study describes the reversal of symptoms in a woman with advanced Alzheimer’s disease after taking magic mushrooms. The findings hint that psilocybin may temporarily relieve symptoms, at least for some people. However, experts call for caution and larger studies. This is not an open-and-shut case, and the paper only outlines one patient’s story.
Large psilocybin dose briefly improved dementia in case study: What to know Original
Share on Pinterest ‘Magic mushrooms’ helped a woman with advanced dementia but is psilocybin a good idea? Image credit: Maskot/Getty Images A new case study describes the reversal of symptoms in a woman with advanced Alzheimer’s disease after taking magic mushrooms. The findings hint that psilocybin may temporarily relieve symptoms, at least for some people. However, experts call for caution and larger studies. This is not an open-and-shut case, and the paper only outlines one patient’s story.
8 common food additives linked to high blood pressure in new study
Could food preservatives increase the risk of high blood pressure? Stefania Pelfini la Waziya/Getty Images A new study involving more than 100,000 participants concludes that certain food preservatives could harm cardiovascular health. The researchers identify eight preservatives that are linked to hypertension (high blood pressure). They also concluded that one additive was specifically associated with cardiovascular disease.
8 common food additives linked to high blood pressure in new study Original
Share on Pinterest Could food preservatives increase the risk of high blood pressure? Stefania Pelfini la Waziya/Getty Images A new study involving more than 100,000 participants concludes that certain food preservatives could harm cardiovascular health. The researchers identify eight preservatives that are linked to hypertension (high blood pressure). They also concluded that one additive was specifically associated with cardiovascular disease.
Trump Reclassifies State-Licensed Medical Cannabis, but It’s Not Legal Just Yet
Share on Pinterest Flowers, also known as buds, grow at the top of a mature marijuana plant on a farm owned and operated by Qualla Enterprises, LLC in Cherokee, NC. Image credit: Charlotte Observer/Getty Images An executive order signed by the Trump administration reclassifies medical cannabis as a less dangerous drug. Although this does not legalize cannabis under federal law, it marks a significant shift in policy.
Could probiotics, dietary changes help protect brain health as we age?
Probiotics, dietary changes may support cognitive function as we age, a new review concludes. Design by MNT; Photography by Guido Mieth/Getty Images & Peter Meade/Getty Images A new review investigates whether influencing the makeup of the gut microbiome can improve brain health. Specifically, it focuses on probiotics, prebiotics, dietary changes, and fecal microbiota transplants (FMT). The authors conclude that modulating the gut microbiome may slow cognitive decline and improve brain health.
Could probiotics, dietary changes help protect brain health as we age? Original
Share on Pinterest Probiotics, dietary changes may support cognitive function as we age, a new review concludes. Design by MNT; Photography by Guido Mieth/Getty Images & Peter Meade/Getty Images A new review investigates whether influencing the makeup of the gut microbiome can improve brain health. Specifically, it focuses on probiotics, prebiotics, dietary changes, and fecal microbiota transplants (FMT).
Could the gut be driving age-related memory loss?
Could the vagus nerve be key to reversing age-related memory loss? VILevi/Getty Images A study in mice concludes that age-related loss in memory function may be driven by changes in the gut microbiome. This effect is mediated by sensory neurons in the gut that contact the brain via the vagus nerve. The scientists identified a mechanism by which gut-brain signals can impair memory formation in the hippocampus.
Could the gut be driving age-related memory loss? Original
Share on Pinterest Could the vagus nerve be key to reversing age-related memory loss? VILevi/Getty Images A study in mice concludes that age-related loss in memory function may be driven by changes in the gut microbiome. This effect is mediated by sensory neurons in the gut that contact the brain via the vagus nerve. The scientists identified a mechanism by which gut-brain signals can impair memory formation in the hippocampus.
Will doctors be able to catch diabetes earlier, years before symptoms start?
Understanding how each person’s biology changes over time may be key to preventing diseases like diabetes, according to new research. Lisa Schaetzle/Getty Images A newly published perspective article examines the future of preventive healthcare enabled by technological advances. The authors argue that multiple relatively minor factors converge to cause serious chronic conditions such as heart disease, type 2 diabetes, and dementia.
How tech advances may aid prevention Original
Share on PinterestUnderstanding how each person’s biology changes over time may be key to preventing diseases like diabetes, according to new research. Lisa Schaetzle/Getty Images A newly published perspective article examines the future of preventive healthcare enabled by technological advances. The authors argue that multiple relatively minor factors converge to cause serious chronic conditions such as heart disease, type 2 diabetes, and dementia.
Common anti-seizure drug may help prevent Alzheimer’s plaques
Could a decades-old anti-seizure drug help prevent Alzheimer’s disease? mrs/Getty Images A new study suggests that a decades-old drug may help slow Alzheimer’s disease progression. The research involved animal models, human neurons, and brains from people at a high risk of developing Alzheimer’s. Specifically, the drug reduced the buildup of Alzheimer’s-related proteins in neurons.
Anti-seizure drug helps reduce amyloid buildup in brain Original
Share on PinterestCould a decades-old anti-seizure drug help prevent Alzheimer’s disease? mrs/Getty Images A new study suggests that a decades-old drug may help slow Alzheimer’s disease progression. The research involved animal models, human neurons, and brains from people at a high risk of developing Alzheimer’s. Specifically, the drug reduced the buildup of Alzheimer’s-related proteins in neurons.
Destructive peddlers of health misinformation: Disinformed experts
GLP Policy & Performance Review, 2024 The GLP is committed to full transparency. Download the report. Global Gene Editing Regulation Tracker Our interactive GLP global map explains the status of each country’s regulations for human and agricultural gene editing and gene drives. GLP 2021 Annual Report The GLP is committed to full transparency. Download our 2021 Annual Report.
Destructive peddlers of health misinformation: Culture wars
GLP Policy & Performance Review, 2024 The GLP is committed to full transparency. Download the report. Global Gene Editing Regulation Tracker Our interactive GLP global map explains the status of each country’s regulations for human and agricultural gene editing and gene drives. GLP 2021 Annual Report The GLP is committed to full transparency. Download our 2021 Annual Report.
Destructive peddlers of health misinformation: AI chatbots
GLP Policy & Performance Review, 2024 The GLP is committed to full transparency. Download the report. Global Gene Editing Regulation Tracker Our interactive GLP global map explains the status of each country’s regulations for human and agricultural gene editing and gene drives. GLP 2021 Annual Report The GLP is committed to full transparency. Download our 2021 Annual Report.
3 differences that may affect weight, muscle Original
Share on PinterestA person’s biological clock and chronotype, as well as their lifestyle habits, may influence their health in the long run. Raymond Forbes LLC/Stocksy According to a new review, understanding your biological clock and chronotype might help you build muscle and lose weight more effectively. Working with, rather than against, your chronotype — such as being a night owl or an early bird — could increase performance and support metabolic health.
Why women may have better heart health than men as they age Original
Share on PinterestA new study finds that men tend to develop cardiovascular disease earlier than women. FG Trade/Getty Images A new study examines differences in heart disease risk between males and females. The researchers find that an increased risk in males begins much earlier in adulthood than expected. More surprisingly, this effect was still present after controlling for other factors, such as the protective nature of female sex hormones.
Men may develop cardiovascular disease earlier in life than women
A new study finds that men tend to develop cardiovascular disease earlier than women. FG Trade/Getty Images A new study examines differences in heart disease risk between males and females. The researchers find that an increased risk in males begins much earlier in adulthood than expected. More surprisingly, this effect was still present after controlling for other factors, such as the protective nature of female sex hormones.
Night owls may have a higher cardiovascular risk: Here's why
Late sleepers may have a higher cardiovascular risk but is it all bad news? Image credit: Westend61/Getty Images A new study focuses on the health impacts of being more active in the evening and going to bed later. In other words, a ‘night owl.’ Focusing on heart health, the authors conclude that, compared with non-night owls, they have an increased risk of cardiovascular disease. The authors also drill down into the lifestyle factors that drive this increase in risk.
Night owls face higher risk, study says Original
Share on PinterestLate sleepers may have a higher cardiovascular risk but is it all bad news? Image credit: Westend61/Getty Images A new study focuses on the health impacts of being more active in the evening and going to bed later. In other words, a ‘night owl.’ Focusing on heart health, the authors conclude that, compared with non-night owls, they have an increased risk of cardiovascular disease. The authors also drill down into the lifestyle factors that drive this increase in risk.
Increased AI use may relate to depression, anxiety
Share on PinterestResearch suggests there could be a link between daily AI usage and depressive symptoms. Image credit: Manuel Breva Colmeiro/Getty Images A new study investigates associations between the use of artificial intelligence (AI) and depressive symptoms. They conclude that those who used AI most often were more likely to experience depressive symptoms than those who never used it. Interestingly, their results varied significantly between age groups.
Frequent AI use linked to higher depression rates, study warns
Research suggests there could be a link between daily AI usage and depressive symptoms. Image credit: Manuel Breva Colmeiro/Getty Images A new study investigates associations between the use of artificial intelligence (AI) and depressive symptoms. They conclude that those who used AI most often were more likely to experience depressive symptoms than those who never used it. Interestingly, their results varied significantly between age groups.
Simple tool may help to spot metastatic cancer sooner Original
Share on PinterestA new tool could identify prostate cancer risk earlier and help guide early treatment options. Image credit: Tom Werner/Getty Images Researchers have developed a simple new tool that can identify the risk level of metastatic prostate cancer patients earlier.
New tool can help identify metastatic prostate cancer risk earlier
A new tool could identify prostate cancer risk earlier and help guide early treatment options. Image credit: Tom Werner/Getty Images Researchers have developed a simple new tool that can identify the risk level of metastatic prostate cancer patients earlier.
Many Brazilians live past 110: What are their secrets?
What does it take to become a supercentenarian? Some communities in Brazil may hold the answer. Image credit: heckepics/Getty Images Brazil is home to three of the 10 longest-lived male supercentenarians in the world. A new paper explores why Brazil is home to an unusually high number of long-lived individuals. The authors believe distinct genetic and immunological factors may be driving this effect. The field of longevity is exploding.
Many Brazilians live past 110: What are their secrets?
What does it take to become a supercentenarian? Some communities in Brazil may hold the answer. Image credit: heckepics/Getty Images This article originally appeared on Medical News Today Brazil is home to three of the 10 longest-lived male supercentenarians in the world. A new paper explores why Brazil is home to an unusually high number of long-lived individuals. The authors believe distinct genetic and immunological factors may be driving this effect. The field of longevity is exploding.
Could eating more dark chocolate help slow down biological aging?
Could chocolate be one of the key ingredients to slowing down biological aging? Gillian Vann/Stocksy A new study investigates a compound called theobromine, which is found predominantly in chocolate. Participants with the highest blood levels of this compound had signs that their biological age was advancing more slowly. Although the results are preliminary, experts believe they warrant further exploration. Theobromine is found in cocoa and, to a lesser extent, coffee.
Theobromine in chocolate may help slow down process Original
Share on PinterestCould chocolate be one of the key ingredients to slowing down biological aging? Gillian Vann/Stocksy A new study investigates a compound called theobromine, which is found predominantly in chocolate. Participants with the highest blood levels of this compound had signs that their biological age was advancing more slowly. Although the results are preliminary, experts believe they warrant further exploration. Theobromine is found in cocoa and, to a lesser extent, coffee.
Supplement trio improves social behavior in mice Original
Share on PinterestIn a study in mice, scientists saw autism-related benefits from a mix of three supplements. Olga Pankova/Getty Images A new study in mice finds that a trio of supplements reduces autism-like behaviors in models of autism spectrum disorder. The supplements in question contained zinc, serine, and branch-chain amino acids. The scientists believe that the benefits are derived from promoting communication between brain cells and enhancing synaptic connectivity.
3 supplements help reduce autism-linked behaviors in mouse study
In a study in mice, scientists saw autism-related benefits from a mix of three supplements. Olga Pankova/Getty Images A new study in mice finds that a trio of supplements reduces autism-like behaviors in models of autism spectrum disorder. The supplements in question contained zinc, serine, and branch-chain amino acids. The scientists believe that the benefits are derived from promoting communication between brain cells and enhancing synaptic connectivity.
Can GLP-1s actually help treat Alzheimer's? Latest trial data
Novo Nordisk has announced the cessation of the Evoke trials, looking at whether GLP-1 drugs could help tackle Alzheimer’s. Image credit: NurPhoto/Getty Images This article originally appeared on Medical News Today Pharmaceutical giant Novo Nordisk recently conducted a large-scale study investigating whether weight-loss drug semaglutide could slow Alzheimer’s progression. Unfortunately, the study was unsuccessful, and the trial was halted early.
Can GLP-1s actually help treat Alzheimer's? Latest trial data
Novo Nordisk has announced the cessation of the Evoke trials, looking at whether GLP-1 drugs could help tackle Alzheimer’s. Image credit: NurPhoto/Getty Images Pharmaceutical giant Novo Nordisk recently conducted a large-scale study investigating whether weight-loss drug semaglutide could slow Alzheimer’s progression. Unfortunately, the study was unsuccessful, and the trial was halted early. However, although more research is needed, the results are not entirely negative.
Novo Nordisk announces trial conclusion
Share on PinterestNovo Nordisk has announced the cessation of the Evoke trials, looking at whether GLP-1 drugs could help tackle Alzheimer’s. Image credit: NurPhoto/Getty Images Pharmaceutical giant Novo Nordisk recently conducted a large-scale study investigating whether weight-loss drug semaglutide could slow Alzheimer’s progression. Unfortunately, the study was unsuccessful, and the trial was halted early. However, although more research is needed, the results are not entirely negative.
New pill reduces 'bad' cholesterol levels by almost 60%
A new study explores the cholesterol-lowering effects of a new drug called enlicitide. Nicole Mason/Stocksy A new study investigates the cholesterol-lowering effects of an experimental drug called enlicitide. The scientists found that it reduces levels of low-density lipoprotein (LDL), or “bad” cholesterol by up to 60%. If these findings are replicated, this drug could be useful for people whose cholesterol levels are resistant to statins and lifestyle changes.
New pill helps lower LDL levels by over 58% Original
Share on PinterestA new study explores the cholesterol-lowering effects of a new drug called enlicitide. Nicole Mason/Stocksy A new study investigates the cholesterol-lowering effects of an experimental drug called enlicitide. The scientists found that it reduces levels of low-density lipoprotein (LDL), or “bad” cholesterol by up to 60%. If these findings are replicated, this drug could be useful for people whose cholesterol levels are resistant to statins and lifestyle changes.
Do antidepressants affect gut health? Experts review the evidence
Growing evidence shows that the gut microbiome is important for immune, digestive, and overall health. Because antidepressants are taken orally, some of the active ingredients may make it to the large intestine, where the majority of microbes live. Medical News Today had spoken to three medical experts to find out more about how commonly prescribed antidepressants could shape and reshape our gut.
What to know, according to experts Original
Share on Pinterest Growing evidence shows that the gut microbiome is important for immune, digestive, and overall health. Because antidepressants are taken orally, some of the active ingredients may make it to the large intestine, where the majority of microbes live. Medical News Today had spoken to three medical experts to find out more about how commonly prescribed antidepressants could shape and reshape our gut.
Are some exercises better than others? Original
Share on Pinterest Osteoarthritis, a condition that affects the joints, is growing increasingly common. Although exercise is a useful lifestyle intervention to ease pain, experts are unsure of the best type of exercise to prescribe. A recent analysis concludes that in patients with osteoarthritis of the knee, aerobic exercise is likely the most beneficial.
What exercises are best for knee osteoarthritis? Study offers clues
Osteoarthritis, a condition that affects the joints, is growing increasingly common. Although exercise is a useful lifestyle intervention to ease pain, experts are unsure of the best type of exercise to prescribe. A recent analysis concludes that in patients with osteoarthritis of the knee, aerobic exercise is likely the most beneficial.
Autism linked to human evolutionary processes in new study
A new study concludes that the speed at which the human brain evolved may help explain why our species experiences autism. According to the authors, certain genes associated with autism are downregulated in humans compared with other species. They argue that autism in humans may be a byproduct of the rapid evolution of human cognitive traits. Although we humans like to think of ourselves as the pinnacle of evolution, that does the rest of the natural world a serious injustice.
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