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Researchers at McMaster University have found a rich new record of vitamin D deficiency, one that resides in the teeth of every person and remains viable for hundreds of years or more. The team of anthropologists has determined that looking into the microscopic structure of teeth opens a window into the lives and challenges of people who lived hundreds of years ago, and whose only record is their skeletal remains.

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Ten risk factors that can be modified are responsible for nine of 10 strokes worldwide, but the ranking of those factors vary regionally, says a study of 26,000 people worldwide led by researchers of McMaster University, and published by The Lancet.

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New research from McMaster University is challenging traditional workout wisdom, suggesting that lifting lighter weights many times is as efficient as lifting heavy weights for fewer repetitions. It is the latest in a series of studies that started in 2010, contradicting the decades-old message that the best way to build muscle is to lift heavy weights.

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The research team conducted a systematic review that analyzed 30 observational studies that enrolled 20,000 women undergoing surgery for breast cancer. Analysis of this data suggested that disruption of sensory nerves in the axilla (armpit) as lymph nodes are removed is associated with the development of chronic pain.

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Children who are thumb-suckers or nail-biters are less likely to develop allergic sensitivities. If they have both ‘bad habits’, they are even less likely to be allergic to such things as house dust mites, grass, cats, dogs, horses or airborne fungi.

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Researchers at McMaster University have established a way to harness DNA as the engine of a microscopic “machine” they can turn on to detect trace amounts of substances that range from viruses and bacteria to cocaine and metals.

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The study,examined 29 trials assessing the effects of unhealthy food and beverage marketing and analyzing caloric intake and dietary preference among more than 6000 children. Researchers found that the marketing increased dietary intake and influenced dietary preference in children during or shortly after exposure to advertisements.

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The peat bogs of the world, once waterlogged repositories of dead moss, are being converted into fuel-packed fire hazards that can burn for months and generate deadly smoke, warns a McMaster researcher who documents the threat – and a possible solution ¬– in a paper published today in the journal Nature Scientific reports.

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Exercise may have some surprising benefits for seniors who experience rapid muscle loss and muscle injury and loss as they age. Researchers at McMaster University have found that physical activity can help retain, even repair and regenerate damaged muscle in the elderly. The findings challenge what is generally seen as an inevitable fact of life: that muscle atrophy and damage cannot be completely repaired in old age and in some cases lost altogether.

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Although the results of prior research appeared to be mixed, these new studies found a highly consistent reduction in capacity to delay gratification in relation to both clinical conditions.

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New research into the ringing-ear condition known as tinnitus indicates an alarming level of early, permanent hearing damage in young people who are exposed to loud music, prompting a warning from a leading Canadian researcher in the field.

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A dietary supplement containing a blend of thirty vitamins and minerals—all natural ingredients widely available in health food stores—has shown remarkable anti-aging properties that can prevent and even reverse massive brain cell loss, according to new research from McMaster University. It’s a mixture scientists believe could someday slow the progress of catastrophic neurological diseases such as Alzheimer’s, ALS and Parkinson’s.

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It is a galactic challenge, to be sure, but Gwendolyn Eadie is getting closer to an accurate answer to a question that has defined her early career in astrophysics: what is the mass of the Milky Way?

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Extremely low birth weight (ELBW) babies who survive are more likely to be disadvantaged in employment, income, self-esteem, marriage and more by the time they reach their 30s. A longitudinal study has followed the ELBW survivors born between 1977 and 1982.

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A large worldwide study has found that, contrary to popular thought, low-salt diets may not be beneficial and may actually increase the risk of cardiovascular disease (CVD) and death compared to average salt consumption.

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Children with autism have a wide range of ability to talk with other people, but it has been difficult to group children by their specific skills. Now researchers at the CanChild Centre for Childhood Disability Research at McMaster University have developed an autism classification system that defines levels of social communications ability among those with autism spectrum disorder (ASD).

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Proposed rule changes by Major League Baseball, designed to speed up the game by reducing time between pitches, could lead to a spike in arm injuries as players have less time to recover between throws, say researchers who have analyzed the impact of fatigue.

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The team studied a group of children and teens ages 10 to 17 who were in lifestyle management programs – either for weight management or lipid disorders. The study looked at whether the videogame habits of the group had an impact on sleep habits, obesity and cardio-metabolic health.

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A team of researchers led by McMaster University’s Charu Kaushic has revealed for the first time how estradiol, a female sex hormone present during the menstrual cycle and found in oral contraceptives, may work to protect women against sexually transmitted viral infections.

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Obesity, non-alcoholic fatty liver disease (NAFLD) and type-2 diabetes have become much more prevalent in the last decade and reduce quality of life and life expectancy. The team will be examining how agricultural and food processing practices may affect brown fat activity directly or indirectly - toxicants such as pesticides or herbicides and food ingredients such as artificial sweeteners or high fructose corn syrups

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Discovery provides a serious advantage in determining how to maximize blood stem cells in therapeutics and could help ease current stem cell shortages.

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Researchers at McMaster University have found that a single minute of very intense exercise produces health benefits similar to longer, traditional endurance training. The findings put to rest the common excuse for not getting in shape: there is not enough time.

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Chemistry researchers have managed to coax molecules known as tellurazole oxides into assembling themselves into cyclic structures – a major advance in their field that creates a new and promising set of materials.

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Opioids are highly addicting and liable for abuse. Methadone maintenance treatment is the most common intervention for those with drug addiction, but relapse is common, with 46% of patients continuing to use illicit opioids during or after the methadone treatment

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Arthroscopic hip surgeries have replaced open surgeries as the go-to cure for femoroacetabular impingement (FAI). The number of such procedures increased 18-fold in the U.S. within a decade. The evidence to date on whether hip arthroscopy works is not conclusive.

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As scientists step up their search for other life in the universe, two astrophysicists are proposing a way to make sure we don’t miss the signal if extraterrestrial observers try to contact us first.

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Scientists have sequenced the entire mitochondrial genome of the ancient glyptodont, a giant, strange mammal and ancestor of the modern-day armadillo, which first appeared approximately 4 million years ago, roaming the Earth until its extinction during the Ice Age.

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Bullying is common, with up to one-third of children worldwide facing peer victimization, and extremely low birth weight children are even more likely to be victims. ELBW children may be at risk for being bullied because of poor motor abilities, more anxiety and struggles at school, the study says.

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Researchers at McMaster University have established a connection between a person’s ability to maintain a firm grip and having the self-control to finish their schoolwork.

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A provocative study by evolutionary biologists at McMaster University takes on one of Charles Darwin’s central ideas: that males adapt and compete for the attention of females because it is the females who ultimately choose their mates and the time of mating.

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Researchers at McMaster University have uncovered significant new evidence in the quest for the elusive goal of gaining muscle and losing fat, an oft-debated problem for those trying to manage their weight, control their calories and balance their protein consumption.

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An international team of researchers has uncovered new information about the Black Death in Europe and its descendants, suggesting it persisted on the continent over four centuries, re-emerging to kill hundreds of thousands in Europe in separate, devastating waves.

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Mothers of teens with food allergies are more likely than the kids themselves to report that the youth have emotional and behavioural problems.

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Research indicates anti-bacterial strategies need to be tailored to the age of the patient. Aging is accompanied by a chronic state of low-level inflammation -- sometimes called ‘inflamm-aging’

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A multi-disciplinary team of researchers has developed a new diagnostic test that makes it possible for patients to quickly determine if they are infected with an illness, using a simple paper test sensitive enough to detect markers of various illnesses using minute amounts of blood, sweat, or other biological material.

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Researchers detail how they have been able to fingerprint myelodysplastic syndromes (MDS), a state for blood cells that turns into acute myeloid leukemia (AML) cancer in approximately 30% of patients

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Researchers analysed the impact of 14 obesity predisposing genes and found that physical activity can blunt the genetic effect of FTO, the major contributor to common obesity, by up to 75 per cent.

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Researchers have discovered half a dozen new species of the African clawed frog, and added back another to the list of known species, in the process uncovering striking new characteristics of one of the most widely studied amphibians in the world.

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Researchers found that very low water pressure was an acceptable, low-cost alternative for washing out open fractures, and that the reoperation rate was higher in the group that used soap.

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By redirecting resources and streamlining the processes that govern refugee admissions to Canada, the federal government can and should dramatically increase the number of refugees admitted, says a McMaster University expert.

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Bleeding complications present the most common risk for patients taking blood thinners. Without an antidote, there is no way to quickly reverse the effects of a blood thinner in emergency situations.

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More than half (52%) of women and a third (38%) of men reported doctor-prescribed painkillers as their first contact with opioid drugs, a family of drugs which include prescription medicines such OxyContin and codeine, as well as illicit drugs such as heroin.