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Global warming could be linked to increased risk of breast, ovarian and cervical cancers

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Scientists have found that global warming in the Middle East and North Africa is making breast, ovarian, uterine, and cervical cancer more common and more deadly. 

The rise in rates is small but statistically significant, suggesting a notable increase in cancer risk and fatalities over time.

“As temperatures rise, cancer mortality among women also rises – particularly for ovarian and breast cancers,” said Dr Wafa Abuelkheir Mataria of the American University in Cairo, first author of the article in Frontiers in Public Health.

“Although the increases per degree of temperature rise are modest, their cumulative public health impact is substantial.”

An unhealthy environment

Climate change isn’t healthy. Rising temperatures, compromised food and water security, and poor air quality all increase the burden of disease and death worldwide. Natural disasters and the strain of unanticipated weather conditions also disrupt infrastructure, including healthcare systems.

When it comes to cancer, that can mean people are more exposed to risk factors like environmental toxins and are less likely to receive a prompt diagnosis and treatment. This combination of factors could lead to a major rise in the incidence of serious cancers, but quantifying it is difficult.

To investigate the effects of climate change on women’s cancer risk, the researchers selected a sample of 17 Middle Eastern and North African countries: Algeria, Bahrain, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Qatar, Saudia Arabia, Syria, Tunisia, United Arab Emirates, and Palestine.

These countries are seriously vulnerable to climate change and are already seeing striking temperature rises. The researchers collected data on the prevalence and mortality of breast cancer, ovarian cancer, cervical cancer, and uterine cancer, and compared this information with changing temperatures between 1998 and 2019.

“Women are physiologically more vulnerable to climate-related health risks, particularly during pregnancy,” said co-author Dr Sungsoo Chun of the American University in Cairo.

“This is compounded by inequalities that limit access to healthcare. Marginalised women face a multiplied risk because they are more exposed to environmental hazards and less able to access early screening and treatment services.”

Running the numbers

The prevalence of the different cancers rose by 173 to 280 cases per 100,000 people for every additional degree Celsius: ovarian cancer cases rose the most and breast cancer cases the least.

Mortality rose by 171 to 332 deaths per 100,000 people for each degree of temperature rise, with the greatest rise in ovarian cancer and the smallest in cervical cancer.

When the researchers broke this down by country, they found that cancer prevalence and deaths rose in only six countries – Qatar, Bahrain, Jordan, Saudia Arabia, the United Arab Emirates, and Syria.

This could be due to particularly extreme summer temperatures in these countries, or other factors which the model couldn’t capture. The rise was not uniform between countries: for instance, the prevalence of breast cancer rose by 560 cases per 100,000 people for each degree Celsius in Qatar, but only 330 in Bahrain.

Although this shows that increased ambient temperature is a probable risk factor for these cancers, it also suggests that temperature has a different effect in different countries – so there are likely to be other factors modifying risk. For instance, increased heat could be associated with higher levels of carcinogenic air pollution in some places.

“Temperature rise likely acts through multiple pathways,” said Chun.

“It increases exposure to known carcinogens, disrupts healthcare delivery, and may even influence biological processes at the cellular level. Together, these mechanisms could elevate cancer risk over time.”

Risk factors

Higher prevalence could also reflect improvements in cancer screening. However, better screening would be expected to result in fewer deaths, as early-stage cancer is easier to treat. But both death rates and prevalence rose, suggesting that the driving factor is exposure to risk factors.

“This study cannot establish direct causality,” cautioned Mataria.

“While we controlled for GDP per capita, other unmeasured factors could contribute. Nonetheless, the consistent associations observed across multiple countries and cancer types provide compelling grounds for further investigation.”

This research also underlines the importance of considering climate-related risks in public health planning.

“Strengthening cancer screening programs, building climate-resilient health systems, and reducing exposure to environmental carcinogens are key steps,” said Chun.

“Without addressing these underlying vulnerabilities, the cancer burden linked to climate change will continue to grow.”

Wellness

Elimination of cervical cancer in EU an ‘achievable goal’, report finds

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Cervical cancer elimination in the EU is becoming achievable as HPV vaccination coverage rises, a new report says.

As Europe marks European Immunisation Week 2026, the European Centre for Disease Prevention and Control said progress in human papillomavirus vaccination is continuing across the EU and European Economic Area.

All EU and European Economic Area countries now recommend HPV vaccination for adolescent girls and boys as part of their immunisation programmes, marking a major step forward in Europe’s cancer prevention efforts.

Bruno Ciancio, head of unit, directly transmitted diseases and vaccine preventable diseases at the European Centre for Disease Prevention and Control, said: “The elimination of cervical cancer in the EU/EEA is becoming an achievable goal, thanks to the HPV vaccination programmes.

“The progress we are seeing across Europe demonstrates what can be accomplished when countries invest consistently in effective immunisation strategies.

“We are closely monitoring this progress and actively supporting countries to accelerate uptake and move faster towards cervical cancer elimination.”

According to the report, three EU and European Economic Area countries, Iceland, Portugal and Norway, have reached the 2024 EU Council Recommendation target of 90 per cent HPV vaccination coverage among girls by the age of 15.

Fifteen years after HPV vaccination programmes were introduced in Europe, a growing body of evidence confirms the vaccine is highly effective in preventing cervical cancer.

Large-scale studies from Sweden, the Netherlands and Denmark, as well as other parts of the world, have shown significant reductions in HPV infections and precancerous lesions, which are abnormal cell changes that can develop into cancer if left untreated, alongside falling cervical cancer rates among vaccinated women.

Since 2020, European countries have reported a decreased incidence of cervical cancer among vaccinated women.

Studies from Sweden, Denmark and the UK show that early administration of the vaccine increases its full protective potential.

A Swedish study suggested that vaccinating girls before their 17th birthday reduced the incidence of cervical cancer by 88 per cent.

An additional six-year follow-up found a sustained reduction in cervical cancer risk and a population-level decline in invasive cervical cancer incidence after HPV vaccination.

The report showed that vaccination programmes and health system design are critical factors in reaching high levels of HPV vaccination coverage.

Evidence from across Europe showed that school-based vaccination programmes are particularly effective and tend to reach higher levels of coverage among both girls and boys.

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Mental health

Poor mental health, poverty and pollution significantly raise women’s heart failure risk – study

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Poor mental health, poverty and pollution can raise women’s heart failure risk, with up to one in four cases potentially preventable, a study has found.

UK Biobank data from more than 230,000 women suggest that depression, socioeconomic hardship and exposure to polluted environments are linked to a significantly higher risk of heart failure in women.

Heart failure happens when the heart becomes too weak or too stiff to pump blood effectively around the body.

High blood pressure, high cholesterol, smoking and diabetes are among the better-known risk factors often targeted in public health campaigns.

Peige Song from China’s Zhejiang University and her team found that living in polluted areas, having poor mental wellbeing, facing socioeconomic deprivation and experiencing chronic inflammatory conditions such as lupus, in which the immune system attacks the body’s own tissues, make women more prone to heart failure.

These risks, however, are often overlooked.

The researchers found that mental wellbeing, environmental exposures, socioeconomic circumstances and reproductive history together contributed almost as much risk for heart failure as all well-known risk factors combined.

The study also found that risk rises with socioeconomic hardship and chronic inflammatory conditions such as lupus or rheumatoid arthritis, approaching the impact of conventional risk factors.

Song said: “[The study] is a call to redefine prevention in women’s cardiovascular health, integrating biological, psychosocial and structural determinants into a unified, equitable approach.

“One in four heart-failure cases in women could be prevented if all under-recognised risk factors were eliminated, assuming causal relationships.”

While completely eliminating all risks is not realistic, Song said “even partial reductions through better mental health services, social equity policies and environmental regulations could yield significant public health benefits”.

Catherine Pirkle, a women’s health specialist at the University of Hawaiʻi at Mānoa in the US, who was not involved in the study, said: “These calculations show convincingly that under-recognised and female-specific risk factors contribute significantly to heart failure in women, independently of the well-established ones.”

Song said: “It’s important to understand that heart health is influenced by more than just blood pressure or cholesterol.

“Factors like mental wellbeing, reproductive milestones and socioeconomic conditions all matter. Awareness and advocacy for comprehensive, gender-sensitive care are key.”

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News

Resistance training has preventative effects in menopause, study finds

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Resistance training improves hip strength, balance and flexibility during menopause and may also improve lean body mass, research suggests.

A study of 72 active women aged 46 to 57 found those who completed a 12-week supervised programme saw greater gains than those who kept to their usual exercise routines.

None of the participants were taking hormone replacement therapy.

The supervised, low-impact resistance exercise programme focused on strength at the hip and shoulder, dynamic balance and flexibility.

Participants used Pvolve equipment, including resistance bands and weights around the hips, wrists and ankles, and also lifted dumbbells of varying loads.

Women in the resistance training group showed a 19 per cent increase in hip function and lower-body strength, a 21 per cent increase in full-body flexibility and a 10 per cent increase in dynamic balance, meaning the ability to stay stable while moving.

Those in the usual activity group did not show any significant improvements.

Previous studies have assessed the decline in lower limb strength and flexibility during menopause, but this is said to be the first study to compare the effect of resistance training on muscle strength and mass before, during and after menopause.

This was done by including participants in different phases of menopause rather than following the same participants over a long timeframe.

Francis Stephens, a researcher at the University of Exeter Medical School in the UK, said: “These results are important because women appear to be more susceptible to loss of leg strength as they age, particularly after menopause, which can lead to increased risk of falls and hip fractures.

“This is the first study to demonstrate that a low-impact bodyweight and resistance band exercise training programme with a focus on the lower limbs, can increase hip strength, balance, and flexibility.

“Importantly, these improvements were the same in peri- and post-menopausal females when compared to pre-menopausal females, suggesting that changes associated with menopause do not mitigate the benefits of exercise.”

Although one of the researchers sits on Pvolve’s clinical advisory board, the researchers said the company did not sponsor the study or influence its results.

Stephens added that any progressive resistance exercise training focused on lower-body strength is likely to yield the same results.

He said: “The important point is for an individual to find a type of exercise, modality, location, time of day etc., that is enjoyable, sustainable, and improves everyday life.

“The participants in the present study reported an improvement in ‘enjoyment of exercise,’ and some are still using the programme since the study finished.”

Kylie Larson, a women’s health and fitness coach and founder of Elemental Coaching, who was not involved in the study, said the results were compelling.

She said: “This is particularly exciting for those that tend to think of menopause as ‘the end’. The study proves that if you incorporate strength training you can still make improvements to your muscle mass and strength, which will also have a positive ripple effect to your ability to manage your body composition.

“In addition, staying flexible and being able to balance are both keys to a healthy and functional second half of life.”

Participants in the study did four classes a week for 30 minutes each session, but Larson said even half that amount of strength training can go a long way, particularly if you emphasise progressive overload, which means gradually increasing muscle challenge through more weight.

Larson said: “Gradually increasing the challenge is what drives real change.

“Lifting heavier over time is what builds strength, protects your bones, and keeps your body resilient through menopause and beyond.”

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