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BMJ Group


Air pollution linked to higher risk of infertility in men

A Danish study found long-term exposure to air pollution and road traffic noise increases the risk of infertility in both men and women. Men exposed to higher levels of PM2.5 had a 24% increased risk of infertility, while women over 35 years old exposed to louder road traffic noise had a 14% increased risk.

SourceBMJ Group·JournalThe BMJ·TypeObservational study·DateSep 4, 2024

Women, Black people, and disadvantaged less likely to get heart surgery in England

Research published in the journal Heart found that women, Black people, and those from low-income households are less likely to be offered heart surgery than men, White people, and affluent individuals. When they do receive surgery, they are more likely to die within a year. The study highlights the need for prompt action to tackle the...

SourceBMJ Group·JournalHeart·TypeData/statistical analysis·DateSep 3, 2024

Certain diabetes drugs might prevent dementia

A large observational study found that sodium-glucose cotransporter-2 (SGLT-2) inhibitors used to treat type 2 diabetes may prevent dementia, with a 35% reduced risk of developing the condition compared to dipeptidyl peptidase-4 (DPP-4) inhibitors. Longer treatment duration was also associated with greater benefits.

SourceBMJ Group·TypeObservational study·DateAug 28, 2024

Just 1-2 cigarettes/day before or during pregnancy linked to major newborn health problems

Research published in the Journal of Epidemiology & Community Health found that even light smoking of 1-2 cigarettes a day before or during pregnancy significantly increases the risk of major newborn health issues. The study analyzed data from over 12 million mother-infant pairs and found that women who smoked had higher risks of neona...

SourceBMJ Group·JournalJournal of Epidemiology and Community Health·TypeObservational study·DateAug 20, 2024

Lack of purpose and personal growth may precede mild cognitive impairment

A study published in the Journal of Neurology Neurosurgery & Psychiatry suggests that psychological wellbeing noticeably declines 2-6 years before mild cognitive impairment (MCI) diagnosis. Key findings include lower levels of purpose and personal growth among participants with MCI, even without apparent cognitive impairment.

SourceBMJ Group·JournalJournal of Neurology Neurosurgery & Psychiatry·TypeObservational study·DateAug 13, 2024

‘Symptom triggered’ testing can pick up early stage aggressive ovarian cancer in 1 in 4 of those affected

Researchers analyzed data from 1741 women diagnosed with high-grade serous ovarian cancer and found that symptom-triggered testing can lead to diagnosis of low-disease spread cases. In most cases, complete surgical removal of the cancerous tissue was possible, challenging the assumption that symptoms always signal advanced disease.

SourceBMJ Group·JournalInternational Journal of Gynecological Cancer·TypeData/statistical analysis·DateAug 13, 2024

Sugary drink intake by children and adolescents increased by almost a quarter between 1990 and 2018

The study found that sugary drink intake among children and adolescents increased by an average of 23% from 1990 to 2018, with the largest increases seen in sub-Saharan Africa. The global average intake was 3.6 standard servings per week, with significant variations by region, age, sex, parental education, and rural vs urban residence.

SourceBMJ Group·JournalThe BMJ·TypeObservational study·DateAug 7, 2024

Reducing child poverty in England would significantly boost child health and narrow health inequalities

Reducing child poverty in England between now and 2033 would significantly boost child health, cut infant deaths, children in care, hospital admissions, and childhood nutritional anaemia. The most deprived regions, especially in the North East, stand to benefit the most.

SourceBMJ Group·JournalJournal of Epidemiology and Community Health·TypeComputational simulation/modeling·DateAug 6, 2024

Lettuce may be just as good as dock leaf for easing nettle sting symptoms

A small comparative study found that rubbing a lettuce leaf on a nettle sting may provide similar relief to using a dock leaf. The cooling and soothing effect of sap evaporation from the crushed leaf is thought to be responsible for this effect, which may work just as well without any treatment.

SourceBMJ Group·JournalEmergency Medicine Journal·TypeRandomized controlled/clinical trial·DateJul 29, 2024

65 million Americans now own firearms for protection, suggests survey

The study found that 79% of gun owners cited protection as the primary reason for owning a firearm, with increasing numbers of women and minority ethnic backgrounds citing this reason. Gun ownership has become predominantly motivated by protection, appealing to demographics beyond traditional firearm owners.

SourceBMJ Group·JournalInjury Prevention·TypeObservational study·DateJul 25, 2024

Resistance exercise ‘activity breaks’ at night may improve sleep length

A small comparative study found that regular 3-minute resistance exercises every half hour for 4 hours can increase sleep duration by an average of 27 minutes compared to prolonged sitting. The study suggests that evening exercise may not adversely impact sleep quality, but further research is needed.

SourceBMJ Group·JournalBMJ Open Sport & Exercise Medicine·TypeRandomized controlled/clinical trial·DateJul 16, 2024

Active commuting linked to lower risks of mental and physical ill health

A large-scale study published in the BMJ Group found that commuters who cycle or walk to work have lower risks of mental and physical ill health compared to those who don't. Cyclists were associated with a 47% lower risk of death from any cause, while pedestrian commuters had an 11% lower risk of hospital admission for any cause.

SourceBMJ Group·JournalBMJ Public Health·TypeObservational study·DateJul 16, 2024

‘Unhealthy’ gut microbiome patterns linked to heightened risk of death after organ transplant

Research found that unhealthy gut microbiome patterns are associated with a heightened risk of death after solid organ transplant. The analysis revealed that the more the gut microbiome patterns diverge from those of the general population, the more likely they are to die sooner after their procedure. High numbers of certain bacterial ...

SourceBMJ Group·JournalGut·TypeObservational study·DateJul 9, 2024