Migraines In Women: How Hormones Influence Neurological Health
For those who have not experienced a migraine, perhaps it would seem just another headache. But for someone like me who has suffered through migraines that will last over a week even with medication, I can definitely tell you that it's much more. The ache is not confined to the head; it's the whole experience. Nausea, sensitivity to light, and throbs so bad it makes simple tasks unbearable. It also comes with an emotional burden—the loneliness and frustration are pretty unbearable. Through the years, realizing how hormones are also implicated in triggering and exacerbating my migraines has helped change the game in my dealing with these episodes.
Hormonal migraines are caused by fluctuations in estrogen and progesterone, the two main female hormones. These hormones are essential for the reproductive system, regulating menstrual cycles and pregnancy. They also have an effect on brain chemicals, such as serotonin and dopamine, which affect mood and pain perception. When hormone levels fluctuate, such as during menstruation, pregnancy, or menopause, they can destabilize the pathways in the brain, causing migraines.
According to Dr. Shivananda Pai, Consultant Neurology, migraines are more than a neurological disorder. "Migraines represent a complex interplay of genetic, environmental, and hormonal factors. In women, hormonal fluctuations are a critical trigger that amplifies sensitivity to pain," he explains. Hormonal headaches are particularly challenging because they are influenced by multiple life stages, from puberty to post-menopause. Common causes include:
Estrogen, often called the "hormone of femininity", does more than regulate reproductive functions. It is a powerful influencer of brain health. Estrogen modulates the activity of neurotransmitters like serotonin, which regulates mood and pain perception, and dopamine, associated with reward and pleasure.
During stages of hormonal stability, like in pregnancy's latter months, women may have fewer migraines because of the steady elevation of estrogen. However, a sudden downfall in estrogen destabilizes these chemicals in the brain, sending a heightened sensitivity for migraine triggers.
The most common form of hormonal migraines is menstrual migraines, which occur in response to the steep decline in estrogen levels just before menstruation. These are typically more intense and less responsive to standard treatment. The timing of these migraines provides clear evidence of the role hormones play in neurological health.
Pregnancy is a rollercoaster of hormones. Although many women experience relief from migraines as a result of the constantly elevated levels of estrogen, some women, particularly in the first trimester, worsen. This individual variability is a characteristic of hormonal migraine triggers.
Hormonal treatments, such as oral contraceptives and HRT, have had mixed reviews regarding their use in managing migraine. Some women fare better with the stabilization the treatment provides, whereas others suffer worsening symptoms. This will depend on the nature and dose of the hormones used.
For most women, menopause brings relief from their migraines. The decline in frequency and severity often accompanies stability in hormone levels. Even so, the susceptibility remains with some towards other forms of triggers including stress and sleep deprivation, not to forget diet-related factors and continues the saga of migraines well after the menopausal stages.
The relationship of hormones to neurological health goes beyond migraines. Hormonal changes have profound effects on a woman's brain in general.
Mood Disorders: Estrogen helps stabilize mood by regulating serotonin. Its decline at menopause increases the risk of mood swings and depression.
Neurodegenerative Diseases: Estrogen is neuroprotective, stimulating the growth and repair of brain cells. Its absence in post-menopausal women has been associated with an increased risk of Alzheimer's disease and cognitive decline.
Multiple Sclerosis (MS): Hormonal cycles may affect the course of MS, a disease that occurs more frequently in women than in men. Estrogen's anti-inflammatory effects provide transient protection during pregnancy, reducing relapse rates in women with MS.
"The intricate interplay between hormones and neurological health underscores the need for gender-specific treatment approaches," says Dr. Pai.
While hormonal changes are inevitable, several strategies can help manage migraines effectively:
Understanding your menstrual cycle can help identify patterns and predict when migraines might occur. This knowledge allows for preventive measures, such as scheduling medications or adjusting lifestyle habits.
Working with a neurologist or gynecologist can help develop a personalized treatment plan. Options might include hormonal therapies, triptans, or preventive medications tailored to your specific needs.
A well-balanced diet, regular exercise, and stress management are all integral parts of managing migraines. For instance, magnesium-rich foods and hydration can help reduce the frequency and severity of attacks.
For people with severe or frequent migraines, preventive medications, such as beta-blockers or CGRP inhibitors, may be prescribed. These medications stabilize brain activity and therefore reduce the chances of migraine during hormonal fluctuations.
Techniques like yoga, meditation, and biofeedback can enhance wellness and reduce the debilitating effects of stress-one of the most common migraine triggers.
Research that was once in its embryonic stage continues to shed more light on the role of hormones in migraines and other neurological conditions. Further breakthroughs in genetic testing might enable doctors to predict, at least in a way, how an individual would react to hormonal therapies. The importance of gender-specific approaches is gradually being realized, which involves differentiating between the plight of women with migraines from others.
As Dr. Pai puts it, "Empowering women with knowledge about the hormonal underpinnings of migraines can lead to better, more personalized care. With the right strategies, migraines can be effectively managed, allowing women to lead fuller, healthier lives.
Migraines are not headaches; they are a complex neurological condition that deeply impacts the lives of millions of women. Understanding the role of hormones in triggering and exacerbating migraines is a vital step toward better management and relief.
Awareness, proactive care, and advances in medical research can help women regain their lives from the grip of hormonal migraines. Whether tracking cycles, adopting healthier habits, or seeking tailored medical care, every step taken toward understanding and managing migraines is a step toward empowerment.
Dr Shivananda Pai is a Consultant Neurology at KMC Hospital Dr B R Ambedkar Circle in Mangalore, India.
Brandes JL. The Influence of Estrogen on Migraine: A Systematic Review. JAMA. 2006;295(15):1824–1830. doi:10.1001/jama.295.15.1824
Sacco S, Ricci S, Degan D, Carolei A. Migraine in women: the role of hormones and their impact on vascular diseases. J Headache Pain. 2012 Apr;13(3):177-89. doi: 10.1007/s10194-012-0424-y. Epub 2012 Feb 26. PMID: 22367631; PMCID: PMC3311830.
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An international team of researchers has developed an artificial intelligence (AI)-based tool that can significantly improve care for glaucoma -- a leading cause of irreversible blindness worldwide, according to a study published in The Lancet Primary Care journal today.
Researchers led by those from the University of Lisbon in Portugal found that the AI-based screening tool halved the number of unnecessary referrals for glaucoma.
The study, released during the Glaucoma Awareness Week, also showed an accuracy level at par with human eye doctors.
"The high accuracy at excluding people without glaucoma is especially important, as false alarms can lead to unnecessary hospital visits, patient anxiety, and added strain on healthcare services," the researchers said.
According to the researchers, AI-based screening could:
The study was carried out at a single screening center in Lisbon, Portugal, in 2023.
The experts screened 671 adults aged 55-65 for glaucoma via the AI tool, analyzing images of the eyes. The images were then independently graded by six glaucoma experts.
The AI-tool:
While modelling studies suggest that screening could substantially reduce glaucoma-related visual impairment and blindness, barriers include the need for specialised diagnostic equipment and trained personnel, particularly in low- and middle-income countries, and the intrinsically low positive predictive value of screening tests.
In such a scenario, the new study showed that "AI may provide a more viable option than population-wide screening", which may seem impractical.
Glaucoma is a chronic disease that affects an estimated 80 million individuals globally, according to the World Glaucoma Association.
It is a progressive, degenerative disorder of the optic nerve that produces characteristic visual field damage.
The disease stems from a long asymptomatic phase, resulting in substantial underdiagnosis and delayed treatment.
Even in high-income countries, up to 50 percent of individuals with glaucoma remain undiagnosed, frequently presenting moderate to advanced disease at first detection.
By the year 2040, it is estimated that there will be 22 million individuals worldwide who are blind from glaucoma.
When to see a doctor for glaucoma:
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In adults, long periods of sleep deprivation has been linked to problems such as weakened immunity, weight gain, depression, and an increased risk of dementia. However, scientists are now paying closer attention to how sleep affects the brain much earlier in life.
However, a new University of North Carolina School of Medicine study suggests that disrupted sleep during early childhood may interfere with key stages of brain development and asl well as increase the risk of developing autism.
Sleep plays a crucial role in helping these synapses form and strengthen. During sleep, the brain organizes and stabilizes these neural connections, shaping the foundation for future brain function. If sleep is repeatedly disrupted during this delicate stage of development, the process may be affected.
Frequent waking or sleep disturbances could interfere with how these neural connections are formed, potentially influencing behavior and cognitive abilities later in life.
“The unique effects of sleep loss during development are largely unexplored,” Diering said. “Our data show that babies and children are more vulnerable to the negative effects of sleep disruption. We also found that sleep loss during this crucial period of time can negatively interact with underlying genetic risk for autism spectrum disorder.”
Sleep problems are already known to be common in people with autism. In fact, sleep disruption has been reported in more than 80 percent of individuals with autism spectrum disorder. However, researchers have long debated whether these sleep issues are a cause of the disorder or a consequence of it. Understanding how sleep interacts with brain development could help scientists detect autism earlier and potentially develop new treatment strategies.
In earlier work conducted in 2022, researchers examined how sleep disruption during early life might interact with genetic factors linked to autism. Using mouse models, they disrupted sleep during the third week of life, a developmental stage roughly comparable to ages one to two in humans.
The study found that sleep disruption during this period produced long lasting behavioral changes. Male mice that were genetically vulnerable to autism showed deficits in social behavior later in life. These results suggested that sleep disruption during critical stages of development may interact with genetic risk factors in ways that shape long term behavior.
To investigate further, researchers studied how developing and adult mice respond differently to sleep deprivation.
Using specially designed housing systems equipped with sensitive sensors, scientists tracked the animals’ breathing and movement. This allowed them to determine when the mice were awake and when they were asleep.
The researchers observed that adult mice were able to compensate for lost sleep. After experiencing sleep deprivation, the adults increased their sleep later during their normal active period. This process, known as sleep rebound, allowed them to recover some of the lost rest.
Younger mice behaved very differently. They showed no sleep rebound at all, meaning they did not compensate for the sleep they had lost. This finding suggests that younger brains may be far more vulnerable to the effects of sleep disruption.
The consequences were also visible in cognitive performance. Sleep deprived young mice performed poorly on learning and memory tasks, while adult mice were significantly more resilient after losing sleep.
The results showed that sleep deprivation in young mice significantly altered the formation of synapses. These changes were not seen in adult mice. “This now provides one of the largest and most comprehensive datasets to examine the molecular effects of sleep loss across the lifespan,” Diering said.
“Development is not something that one can go back and do again,” Diering said. “Sleep is important for the entire life and especially during development. Understanding what we know now will place greater emphasis on understanding sleep issues in ASD and could lead to an important therapeutic avenue to treat ASD and other developmental conditions.”
The findings highlight an important message for parents and caregivers. During early childhood, healthy sleep patterns may play a critical role in shaping the brain for years to come.
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Using amphetamines, cocaine and cannabis can significantly increase your risk of having a brain stroke particularly among younger adults, according to a new University of Cambridge analysis
The findings highlight how recreational drug use may contribute to a preventable health risk, especially among people under the age of 55.
Megan Ritson, a stroke genetics researcher at the University of Cambridge and lead author said the results provide strong evidence linking certain drugs to stroke risk.
“These findings provide compelling evidence that drugs like cocaine, amphetamines, and cannabis are causal risk factors for stroke,” Ritson noted.
A stroke occurs when blood flow to part of the brain is interrupted. This can happen when a blood vessel becomes blocked by a clot, known as an ischemic stroke, or when a blood vessel bursts and causes bleeding in the brain, known as a hemorrhagic stroke. Both types can lead to serious brain damage and can be life threatening.
When researchers combined data from eight previous studies, they found that recreational amphetamine use was associated with more than double the risk of stroke across all adult age groups. For individuals under the age of 55, the increase was even greater. In this group, amphetamine use was linked to nearly triple the risk of stroke compared with people who do not use the drug.
Across all age groups, the analysis found that amphetamine use increased the risk of ischemic stroke by 137 percent and hemorrhagic stroke by 183 percent. These figures reflect relative risk, meaning the probability of stroke is higher among users compared with non users.
The analysis showed that cocaine use nearly doubled the risk of stroke of any kind and more than doubled the risk of hemorrhagic stroke. Additional genetic investigations were conducted alongside the main analysis to better understand whether the relationship might be causal rather than simply linked to other lifestyle factors.
Eric Harshfield, a genetic epidemiologist at the University of Cambridge, said the findings suggest the drugs themselves may play a direct role. “Our analysis suggests that it is these drugs themselves that increase the risk of stroke, not just other lifestyle factors among users,” Harshfield said.
Among people under the age of 55, cannabis use was linked to a 14 percent increase in stroke risk. Although the increase is lower than that associated with stimulant drugs, researchers say it remains important because cannabis is widely used.
The researchers also note that many of the studies included in the analysis relied on participants reporting their own drug use. Because of this, other lifestyle factors could potentially influence the results. Further research will be needed to better understand the biological mechanisms involved and how different patterns of drug use may affect stroke risk. Still, scientists say the evidence now available provides an important foundation for future public health strategies.
“These findings give us stronger evidence to guide future research and public health strategies,” Ritson said.
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