Menopause
More research needed to understand link between brain fog and menopause, expert says
Brain fog in menopause is common but still poorly understood, with researchers calling for more work to explain the link and how best to support women.
For a new perspective article published in The Lancet Obstetrics, Gynaecology, & Women’s Health, researchers based in the UK and Australia reviewed the evidence on menopause-related cognitive symptoms. They found that symptoms such as forgetfulness, reduced concentration and brain fog are common during the menopause transition, but are still poorly recognised and under-researched.
More than two-thirds of women report difficulties with memory or concentration over the menopause transition. Multiple factors may contribute to these cognitive symptoms, including hormonal changes, sleep disturbances and psychological and psychosocial stress. Yet, because cognitive symptoms are not widely discussed, they can cause considerable worry, with some fearing they are signs of dementia or undiagnosed neurodevelopmental conditions.
The review paper emphasises that overall cognitive performance for women experiencing menopause-related brain fog typically remains within expected ranges and, importantly, that cognitive symptoms are not linked to an increased risk of dementia.
Professor Aimee Spector of UCL Division of Psychology and Language Sciences, co-author on the paper, said: “Cognitive symptoms such as forgetfulness and ‘brain fog’ are incredibly common during menopause, yet they are often overlooked. Our findings highlight just how complex menopause-related cognitive symptoms are, and how much we still don’t know about what drives them. More targeted research is essential if we are to identify which biological, psychological or lifestyle factors contribute most, and what types of support or treatment are likely to be effective.”
The authors argue that clinicians can play a key role in understanding and validating women’s experiences by asking about the duration of cognitive symptoms, impacts on day-to-day functioning and any other medical or psychosocial factors that could be contributing to cognitive symptoms.
The review also discusses a range of approaches that may ease cognitive symptoms, such as improving sleep quality, engaging in regular aerobic exercise and eating a balanced diet. There is also little but promising research into the impact of psychological therapies targeting cognitive symptoms, with a recent meta-analysis of three cognitive behavioural therapy-based studies showing significant improvements in memory and concentration. The evidence is more mixed for the benefits of hormone therapy on cognitive symptoms during menopause.
The authors identify cognitive symptoms as a major area of unmet need in menopause research. They call for a unified definition of menopause-related cognitive changes and for prospective, longitudinal studies that can track women from pre- to post-menopause. Better understanding of the biological, psychological and social factors that contribute to cognitive symptoms will be crucial for developing effective treatments.
Lead researcher Dr Caroline Gurvich of Monash University said: “There’s a lot of pressure to use objective measures of cognitive decline, like a memory test, for example, in a clinical trial, but the key symptom of brain fog is a subjective experience. So having a definition that acknowledges the key cognitive symptom is critical.”
This is not without precedent – we already use subjective or self-report measures for depression, anxiety and other mental health conditions with great success.
Dr Gurvich said the proposed definition would also validate women’s individual experiences while empowering them through the reassurance that any objective decline in their cognitive ability is subtle.
She added: “This is a decrease in cognitive or learning efficiency, not functionality or capacity. For many women, the perception they are losing capacity is what drives them to stop work or lose the confidence to live fulfilling lives during and after menopause. I hear all the time from women who have gone through menopause that validation would have made a significant difference to their resilience and the approach they took to living with menopause.”
Co-author Professor Martha Hickey of the University of Melbourne and Royal Women’s Hospital said: “Our analysis of the best available research shows that many women experience some degree of cognitive symptoms, such as brain fog, during the menopause transition.”
“But there’s a lack of long-term data, which means that there’s a gap in our knowledge about how the brain fog symptom develops and changes from peri-menopause to after menopause ends. It’s a real gap in our understanding.”
Professor Spector added: “We increasingly see women, typically at the peak of their careers, losing confidence in the workplace, often translating to leaving work or reducing work hours. Having simple strategies to support and retain them at work is also a broader economic issue.”
Abdominal obesity may lead to worse menopause symptoms, including forgetfulness, irritability and night sweats, a new study suggests.
The findings point to a possible link between fat stored around the waist and more severe midlife symptoms.
Researchers said waist-to-height ratio could help identify women who may benefit from more targeted support.
Dr Monica Christmas is associate medical director for The Menopause Society.
Christmas said: “Unintended weight gain during the menopause transition, especially in the midsection, is one of the most commonly reported complaints, with the most significant gains experienced in the years leading up to the final menstrual period and a couple of years after.
“This not only affects self-image but also imposes negative health risks and, as the study highlights, is associated with higher prevalence and severity of menopause symptoms.”
The study used data from more than 1,100 women who took part in the Study of Women’s Health Across the Nation.
Abdominal obesity is a build-up of fat around the waist. It often includes visceral fat, which is deep, active fat surrounding internal organs.
This type of fat releases inflammatory proteins and toxic fatty acids that can contribute to insulin resistance, cardiovascular disease, high blood pressure and a higher risk of some cancers.
Insulin resistance means the body does not respond properly to insulin, the hormone that helps control blood sugar.
The Menopause Society said abdominal obesity is estimated to affect more than 60 per cent of menopausal women.
As oestrogen levels fall during menopause, women tend to store more fat around the waist rather than the hips, even if their overall weight does not change.
The researchers noted that obesity patterns and menopause symptom burden can vary by region, but research into the effect of abdominal obesity on these symptoms remains limited.
They also said earlier studies have mainly looked at single symptoms, rather than how symptoms connect with each other.
In this study, researchers used network analysis, a method that looks at how symptoms are linked, to compare symptom patterns in women with and without abdominal obesity.
They identified abdominal obesity using waist-to-height ratios, which compare waist size with height and can be used as a simple measure of health risk linked to body fat around the middle.
The researchers concluded that women with abdominal obesity had both a higher prevalence and greater severity of a range of symptoms, as well as a distinct symptom network structure.
In particular, women with abdominal obesity reported a higher prevalence and greater severity of dizziness, hot flashes and night sweats than women without abdominal obesity.
Sleep disturbances and palpitations were also reported more often in women with abdominal obesity. Palpitations are feelings of a fast, fluttering or pounding heartbeat.
The researchers said assessment of abdominal obesity using waist-to-height ratios may help stratify women who are likely to benefit from targeted, network-based interventions rather than isolated symptom management.
Christmas said: “Educating women early about healthy lifestyle interventions to prevent midlife weight gain is key to improving mental and physical well-being during a tumultuous time frame.”
Perimenopause may offer a key window to spot heart disease risk earlier, with women in the transition twice as likely to have low heart health scores, new research suggests.
The findings suggest the transition to menopause could be an important time to reassess risk and prompt lifestyle changes.
Garima Arora is senior author of the study and professor of medicine in the division of cardiovascular disease at the University of Alabama at Birmingham.
Arora said: “Mid-life women should think of the perimenopausal period as a ‘window of opportunity.’
They should be proactive and not wait until they reach menopause to start checking their blood pressure, cholesterol and blood sugar levels.
“Women should talk with their health care team about their reproductive status and any changes they are experiencing. It may be the perfect time to get a baseline for their heart health.”
The analysis included 9,248 women aged 18 to 80 who took part in the National Health and Nutrition Examination Survey between 2007 and 2020.
Researchers used Life’s Essential 8, a heart health score developed by the American Heart Association. It measures diet, physical activity, tobacco use, sleep, blood pressure, cholesterol, body weight and blood sugar on a 100-point scale.
Median scores fell as women moved through reproductive stages, from 73.3 out of 100 in premenopausal women to 69.1 in perimenopausal women and 63.9 in postmenopausal women.
Among the individual Life’s Essential 8 measures, diet consistently had the lowest scores and continued to decline across all reproductive stages.
After accounting for age, perimenopausal women were twice as likely to have a low overall score as premenopausal women.
They were also 76 per cent more likely to have a low cholesterol score and 83 per cent more likely to have a low blood sugar score.
The researchers said fluctuations in oestrogen levels during perimenopause may contribute to lower cardiovascular health because they may affect cholesterol, insulin resistance, blood pressure and weight management.
Insulin resistance means the body does not respond properly to insulin, the hormone that helps control blood sugar.
Sleep duration scores remained high across all reproductive stages, despite perimenopausal women reporting difficulty sleeping, suggesting sleep quality may be more affected than sleep length.
Amrita Nayak, lead author of the study and research fellow in the division of cardiovascular disease at the University of Alabama at Birmingham, said the findings highlight a point where risk may begin to rise.
She said: “Our analysis highlights that perimenopause, women’s reproductive transition period to menopause, is the critical time when the increase in cardiovascular risk seems magnified.
“When we compared women’s LE8 scores to the premenopausal baseline, the perimenopausal group was the first to show a significant jump in the odds of having low heart health.”
Arora added that nutrition could be an important area for early intervention.
“Nutrition can be a central factor for early and proactive intervention.
“Focusing on heart-healthy habits early, especially getting regular exercise and following a healthy eating plan like the DASH diet with a focus on lowering salt can help improve cardiovascular health for perimenopausal women in the years to come.”
Stacey E. Rosen, volunteer president of the American Heart Association, who was not involved in the study, said the findings underline the need to consider women-specific risk factors across life stages.
“This research highlights yet another aspect of the unique factors that increase a woman’s risk of cardiovascular disease throughout the stages of her lifespan.
“Significant health changes during pregnancy, perimenopause and menopause make it particularly important to pay close attention to increases in health risk factors during those times.
“I encourage women to talk with their primary care and specialty health care teams to learn about early detection and modification of traditional and ‘female-specific’ risk factors.
“Women can take proven steps to improve their cardiovascular health at all ages.”
The researchers said the next step is to follow women over several years to track hormone levels and heart health, which may help clarify the long-term impact of perimenopause and how lifestyle changes could reduce risk.
Osteoporosis may raise the risk of death in postmenopausal women by up to 47 per cent, a new study suggests.
The findings point to an inverse relationship between femoral bone mineral density and mortality risk, especially within certain ranges.
Femoral bone mineral density is the amount of mineral in the thigh bone, which is often measured to assess bone strength and osteoporosis risk.
Dr Monica Christmas is associate medical director for The Menopause Society.
She said: “Osteoporosis often remains a silent threat after menopause, despite its profound effect on women’s lives—from loss of height, poor balance, and reduced mobility to disfigurement, pain, and even premature death.
“Early screening and preventive measures, including a calcium-rich diet (preferably from food sources), regular weight-bearing exercise, and hormone therapy when appropriate, can significantly improve bone health and reduce risks not only of fractures but also cardiovascular disease, certain cancers, and dementia.
“It’s time we bring this conversation to the forefront.”
In the study involving nearly 3,000 postmenopausal women, bone mineral density at four femoral sites was assessed using dual-energy x-ray absorptiometry, a scan commonly used to measure bone strength and fracture risk.
The analysis found that mortality risk was significantly higher when femoral bone mineral density reached the osteoporotic threshold or when osteoporotic fractures were present.
After full adjustment, osteoporosis was associated with a 47 per cent increased risk of mortality.
A stronger inverse association between increased bone mineral density and mortality risk was seen within specific ranges, suggesting bone mineral density could serve as a prognostic marker of wider health.
The relationship appeared especially notable within the range of 0.46 to 0.71 g/cm² for total femur bone mineral density.
Previous research has shown that postmenopausal women face a significantly higher risk of death within one year of hip or vertebral fractures.
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