Key Takeaways
Maintaining cognitive health after 55 requires a multi-faceted approach combining physical activity, proper nutrition, mental stimulation, and healthy lifestyle habits to keep mind active over 55, preserve independence, and reduce dementia risk.
• Exercise regularly for brain protection: Aim for 150 minutes weekly of moderate activity plus strength training twice weekly to boost hippocampus size and improve cognitive function.
• Follow Mediterranean diet patterns: Emphasize leafy greens, fatty fish, berries, and olive oil to reduce Alzheimer's risk by up to 29% and slow cognitive decline.
• Engage in challenging mental activities: Learn new skills like photography or languages rather than simple puzzles to build cognitive reserve and delay dementia onset by up to 5 years.
• Prioritize quality sleep and social connections: Get 7 hours nightly and maintain active social engagement to reduce dementia risk by 38% and keep your brain functioning optimally.
• Consider targeted supplements wisely: Omega-3 fatty acids (1,000-2,000mg daily) and vitamin D show promise, but focus on addressing deficiencies rather than universal supplementation.
The most effective approach combines multiple strategies rather than relying on single interventions. Research shows that following 4-5 healthy behaviors can reduce Alzheimer's risk by 60% compared to following just one or none. One in 14 people over 65 have dementia in the UK, rising to one in six for those over 80. These figures highlight why learning to keep mind active over 55 has become vital for maintaining independence and quality of life. Cognitive health was a top priority in 55% of adults, yet many remain unsure about strategies that work. This piece explores evidence-based approaches for how to keep brain healthy. It covers physical activity and nutrition, along with methods for keeping mind active in old age that can help protect cognitive function in later years.
Why keep mind active over 55 matters after 55
Natural changes in brain function with age
Brain volume begins to shrink when people reach their 30s or 40s. The rate of shrinkage increases around age 60 [1]. The prefrontal cortex, cerebellum and hippocampus show the most dramatic losses, which worsen in advanced age [1]. These structural changes affect how the brain processes information and forms new memories.
Neurons themselves undergo important alterations. They shrink and retract their dendrites, the branching structures that receive electrical signals from other brain cells [1]. The myelin sheath that wraps around axons deteriorates and slows communication between neurons [2]. Synaptic connections drop as well, which affects learning and memory more than the structural changes themselves [1].
Chemical messenger production declines with age. Older brains blend less dopamine, and fewer receptors remain available to bind this neurotransmitter [1]. Studies have found that 60- and 70-year-olds with mild cognitive impairment had reduced serotonin levels in their brains [1].
Common cognitive changes include slower word recall and name retrieval [3]. Older adults may find multitasking more difficult and experience mild decreases in attention [3]. Working memory, knowing how to hold information like phone numbers or passwords temporarily, starts declining as early as age 30 [1]. Processing speed and problem-solving abilities also decrease [1].
But aging brings positive cognitive changes as well. Many studies show older adults have larger vocabularies and greater knowledge of word meanings than younger people [3]. The aging brain becomes better at detecting relationships between diverse information sources and capturing broader points of view. It also understands global implications of specific issues [2]. This is the foundation of wisdom.
The connection between mental activity and independence
Independence among older adults refers to individual autonomy in meeting daily needs such as eating, dressing and showering, along with the right to choose [4]. Cognitive function affects this independence directly. Decreased cognitive abilities can cause dependence on others in activities of daily living, reduce quality of life and damage health [4].
Mental activity preserves the capacity to perform both simple activities of daily living (BADLs) and instrumental activities of daily living (IADLs). BADLs include fundamental self-care tasks, while IADLs involve more complex activities like managing finances and medications. Cognitive programs strengthen independence in IADLs by improving internal locus of control, participation and problem-solving skills [4].
Research on interventions to improve independence identified effective approaches. Participation in social activities, intergenerational activities and volunteering proved beneficial [4]. Friendship programs, continuing education and self-management activities also helped. Computer use showed positive results. High social engagement, including visiting with neighbors and volunteer work, was associated with better cognitive health in later life [4].
How lifestyle choices affect cognitive health
Lifestyle factors exert powerful effects on brain aging. An NIA-funded study of almost 3,000 older adults showed that healthy lifestyle factors had important benefits. People who engaged in four or five behaviors had a 60% lower risk of developing Alzheimer's compared to those who followed one or none [3]. These behaviors included physical activity, not smoking, not drinking heavily and following Mediterranean-style diet. Mentally stimulating activities also played a role. Those who followed two or three activities had a 37% lower risk [3].
The POINTER study gave strong evidence for combined interventions. Participants ages 60 to 79 spent two years on an intensive regimen. They did aerobic exercise four times weekly and followed Mediterranean diet adherence. Online cognitive training, mandatory social activities and monitoring of blood pressure and blood sugar were also part of the program. These participants got cognitive function scores like people one to two years younger [5].
Physical activity shows particular promise. Older adults with higher levels of physical activity showed slower rates of cognitive decline than less active peers [3]. Staying connected through social activities and community programs supports cognitive function similarly. Regular internet calls helped lower the risk of cognitive decline and social isolation [4]. Reading books and magazines, playing board games and visiting museums all help reduce cognitive decline risk [6]. Playing musical instruments also contributes to this reduction.
Physical activity and exercise for brain health
Physical exercise promotes cognitive brain health and counteracts many effects of cognitive aging [4]. Research shows that exercising for at least 52 hours produces improved cognitive performance in older adults with and without cognitive impairment [4]. Processing speed, attention, executive function and global cognition show the most consistent improvements [4].
Types of exercise that support cognitive function
Aerobic exercise offers most important advantages for brain health. Walking stands as the most used mode and accounts for over half of aerobic activities in cognitive studies [4]. Moderate-intensity aerobic exercise three days a week can boost hippocampus size by 2%, enough to offset one to two years of age-related brain changes [7]. Aerobic training increases gray and white matter volume, boosts blood flow and improves memory function [5].
Resistance training provides benefits beyond muscle strength. A 12-week program increased cognitive capacity by 19% in elderly women [8]. Adults aged 55 and older with mild cognitive impairment who performed twice-weekly weight training for six months showed healthier brain neurons and less shrinkage in regions that Alzheimer's disease affects [8]. Strength exercises may prevent cognitive decline through mechanisms with insulin-like growth factor 1 and homocysteine reduction [9].
Mind-body exercises combine mental focus with physical movement. Tai chi practitioners who trained for 12 weeks demonstrated greater multitasking ability and increased activity in the prefrontal cortex, where higher-level thinking occurs [4]. Yoga participants aged 55 and older who completed a 12-week program showed improvements in verbal memory and visual-spatial memory [4]. Dancing reduced dementia risk by 76% in one landmark study, twice as much as reading [4].
Combined aerobic and resistance training produces superior results compared to either mode alone [10]. This dual approach improves global cognitive function and episodic memory among healthy older adults [10].
How much physical activity you need
Adults aged 65 and older need at least 150 minutes of moderate-intensity physical activity a week, or 75 minutes of vigorous-intensity activity, or an equivalent combination [5][5]. Moderate intensity means you can still talk but not sing during the activity. Vigorous intensity means you cannot say more than a few words without pausing for breath [7].
Muscle-strengthening activities with major muscle groups should occur on two or more days a week [5][5]. Balance activities belong in the routine at least twice a week to maintain physical function [5]. Examples include walking heel-to-toe or standing from a sitting position [5].
Research shows the average effective exercise dose spans one hour per session, three times a week, for 60 hours distributed over 25 weeks [4]. Sessions averaging 56 minutes prove beneficial [4]. The total length of intervention in hours associates with improved cognitive performance [4].
Some physical activity beats doing none at all [5]. Adults who cannot meet full recommendations should do whatever physical activity their abilities and conditions allow [5].
Starting an exercise routine after 55
Medical clearance comes first. People who have not exercised for some time, or who have medical conditions or concerns, should speak to a GP before they begin [7]. Adults over 60, especially when you have those who are inactive or managing pre-existing health conditions, need a complete physical examination before starting any routine [11].
Start slow and build up, whether you begin a new exercise or return after a long break [8]. Think about adding movement into everyday activities, such as parking farther from the shop, using stairs instead of elevators or doing wall sits while brushing teeth [4]. These moments accumulate over time [4].
Proper preparation lowers injury risk. Warm up before exercise with shoulder rolls, twists for the spine and marching in place for the lower body [8]. Make sure equipment works and wear appropriate, well-fitting shoes for the activity and weather conditions [8]. Stay well-nourished and hydrated [8]. Take it easy in very hot or very cold weather [8].
Weight-bearing exercises such as walking strengthen leg muscles and preserve bone health to prevent osteoporosis [8]. Cycling and swimming benefit general health but are not weight-bearing, so include some weight-bearing exercise as well [8]. Exercises that improve flexibility help counter the stiffness that age develops [8].
Diet and nutrition to keep your brain healthy
Nutrition choices influence brain aging just as much as physical activity. Research on dietary patterns reveals specific eating approaches that protect cognitive function and reduce dementia risk in people over 55.
Mediterranean diet for cognitive health
The Mediterranean diet has shown protective effects against cognitive decline in multiple studies. High adherence to this eating pattern reduced the risk of mild cognitive impairment by 25% and Alzheimer's disease by 29% [9]. Older adults who followed a Mediterranean-style diet had 35% lower risk of scoring poorly on cognitive tests. Even moderate adherence showed 15% lower risk [12].
This dietary pattern originated in Mediterranean Basin countries and centers on plant-based foods that are minimally processed, seasonal and grown in the region [9]. Fresh fruit appears on the table every day, with olive oil serving as the main fat source. Fish, seafood, poultry and dairy products are consumed in low-to-moderate amounts. The diet has regular but moderate wine consumption, zero to four eggs per week, and sparing amounts of sweets and red meat [9].
Research shows adherence to the Mediterranean diet improves specific cognitive domains. Studies found better episodic memory and working memory among those with high adherence compared to the lowest group [9]. A Spanish trial with over 400 cognitively healthy volunteers at high cardiovascular risk showed better cognitive outcomes by a lot in intervention groups following the Mediterranean diet [13]. The diet may reduce cognitive decline by lowering oxidative stress. Olive oil plays a protective role against Alzheimer's risk in particular [9].
Foods that support brain function
Certain foods deliver nutrients that support brain health in a direct way. Leafy greens such as kale, spinach and broccoli contain vitamin K, lutein, folate and beta carotene, which research suggests may slow cognitive decline [5]. These vegetables also provide folate that improves memory by decreasing inflammation and improving blood circulation [14].
Fatty fish ranks among the most beneficial brain foods. Salmon, cod and pollack provide omega-3 fatty acids linked to lower blood levels of beta-amyloid, the protein forming damaging clumps in Alzheimer's brains [5]. Eating fish at least twice per week supports cognitive function [5]. Walnuts offer alpha-linolenic acid for those who avoid fish, an omega-3 fatty acid that improves cognitive test scores [5].
Berries contain flavonoids, natural plant pigments that help improve memory. Women who consumed two or more servings of strawberries and blueberries per week delayed memory decline by up to 2.5 years [5]. Blueberries provide anthocyanin and other flavonoids that may improve brain function [14].
Coffee and tea are a great way to get benefits beyond short-term alertness. Higher caffeine consumption was associated with better scores on mental function tests [5]. Research indicates caffeine might help solidify new memories [5]. Whole grains provide complex carbohydrates that deliver a steady glucose supply to brain cells, which cannot store excess glucose [14].
Hydration and brain performance
Water intake affects cognitive performance in older adults. Women need 2 to 2.7 liters per day, while men require 2.5 to 3.7 liters, though individual needs vary based on activity level and medication use [7]. The European Food Safety Authority recommends 2.0 liters for women and 2.5 liters for men aged 14 to 70 years [8].
Lower hydration levels were associated with decreased scores on tasks measuring motor speed, sustained attention and working memory among women [15]. Overhydration may be as detrimental as dehydration for cognitive performance in older adults [15]. Reduced hydration status was linked to greater reductions in global cognitive function over a two-year period in older adults with metabolic syndrome [8].
Older adults face increased dehydration risk due to blunted thirst signals and lower body water reserves from reduced muscle mass. Medications with diuretic effects add to this risk [8]. Water-rich foods such as melon, oranges, berries, lettuce and cucumbers contribute to hydration alongside beverages [7].
Brain supplements for adults over 55
Supplements marketed for brain health fill pharmacy shelves throughout the UK, yet evidence for their cognitive benefits varies considerably. Older adults can make informed choices by understanding which supplements show promise and which lack support.
Omega-3 fatty acids and fish oils
Omega-3 polyunsaturated fatty acids form much of the brain's structure. Brain weight has approximately 50-60% lipids, of which 35% consists of omega-3 fatty acids [16]. DHA accounts for roughly 40% of total fatty acids in the brain, while EPA has less than 1% [16]. This structural importance suggests why omega-3 intake matters for cognitive health.
Research shows omega-3 supplementation can improve specific cognitive functions. One study providing 900 mg of DHA daily found participants performed better on memory and learning tests after 24 weeks [11]. DHA supplementation quadrupled serum DHA concentrations and was associated with better paired associate learning scores [16]. Women with higher omega-3 levels had larger total brain volumes eight years later, with the effect equivalent to preserving one to two years of brain health [17].
Long-term omega-3 users showed a 64% lower Alzheimer's risk compared to nonusers [18]. Dietary DHA intake was associated with a 27% decreased dementia risk and 24% decreased Alzheimer's risk [18]. But benefits appear most pronounced if you start supplementation during early stages of cognitive decline rather than established dementia [11].
Fish oil supplements typically contain EPA and DHA in varying ratios. Taking 1,000-2,000 mg of omega-3 fatty acids daily provides a reasonable starting point, safely below the 3,000 mg upper limit set by US authorities [11].
B vitamin complex (B6, B12, and folate)
B vitamins influence cognitive health through the homocysteine pathway, yet supplementation evidence remains mixed. Folate intake below recommended daily allowance was associated with doubled risk of cognitive impairment [19]. By age 75-80, 40% of people have diminished knowing how to absorb food-bound B12, leading to nerve health decline in the spine and brain [20].
B12 deficiency produces symptoms easily confused with dementia. These include tiredness, trouble concentrating and memory problems [9]. Testing for B12 deficiency requires measuring methylmalonic acid and homocysteine levels, not just plasma B12 [20]. The Framingham Heart Study showed that elevated homocysteine predicted brain atrophy and higher dementia risk [20].
Despite these associations, a meta-analysis of vitamin B supplementation found no significant overall effect on preventing cognitive decline in healthy people [21]. The evidence suggests B vitamins may help those with existing deficiencies or elevated homocysteine rather than serving as universal preventive supplements.
Vitamin D supplements
Vitamin D deficiency affects 23% of UK adults severely and 40.4% inadequately [12]. Vitamin D receptors exist throughout the brain and are associated with neuroprotection and anti-inflammatory effects [12]. People with severe vitamin D deficiency are 120% more likely to develop dementia over six years [12].
But supplementation studies provide less clear benefits. Research on people with mild to moderate deficiency found vitamin D supplementation did not result in cognitive benefits [12]. The evidence indicates supplementation may help those with severe deficiency but remains unproven for mild deficiencies [12]. The NHS recommends everyone in the UK take 10 micrograms (400 IU) of vitamin D daily between October and early March due to low UV levels [9].
How to choose quality supplements in the UK
Purchasing supplements requires careful attention to source and quality. Reputable suppliers include local chemists, pharmacies and established supermarkets rather than unknown internet companies [5]. Products should display clear labeling with ingredient amounts and expiry dates [5]. Supplements in the UK must be labeled as "food supplement" and comply with specific regulations [14].
Check that supplements provide dosages aligned with NHS guidelines without exceeding daily recommended amounts [9]. Third-party testing, Good Manufacturing Practice certification and transparent ingredient sourcing indicate quality products [22]. Avoid products making dramatic health claims, as reliable UK brands focus on supporting health rather than promising quick fixes [22]. Always consult a GP before starting supplements, especially when you have medications or managing health conditions [5].
Mental stimulation and keeping mind active in old age
Mental stimulation through challenging activities builds cognitive reserve that helps the brain function better despite age-related changes. Diverse cognitive tasks strengthen neural pathways and support independence.
Learning new skills and hobbies
Complex new skills produce measurable cognitive improvements. Adults aged 60 to 90 who learned digital photography or quilting showed wide-range memory improvement compared to those doing simpler activities like crossword puzzles [23]. A musical instrument improves memory and cognitive function while reducing depression [10]. A new language delays age-related cognitive decline, even when learned in adulthood [23]. The process activates the prefrontal and parietal lobes and requires effort that strengthens thinking and judgment [24].
Social engagement and connection
Social activities deliver powerful protection against cognitive decline. The least socially active older adults developed dementia around age 87, roughly five years earlier than the most socially engaged, who developed it around age 92 [13]. Frequent social activity associates with a 38% reduction in dementia risk and 21% reduction in mild cognitive impairment risk [13]. Volunteering reduces dementia likelihood substantially [25]. Religious event attendance and community leadership positions also lower ADRD risk [25].
Brain training activities that work
Evidence on brain training shows mixed results. Three sessions of at least 30 minutes weekly led to small improvements in thinking and memory [26]. But improvements proved task-specific and didn't transfer to untrained activities [26]. Challenging games like chess and strategy-based video games show more promise than marketed brain training apps [24].
Reading and cognitive challenges
Those who read twice or more weekly reduce long-term cognitive decline risk at every education level [27]. The activity activates multiple brain networks at once and strengthens language, attention, memory and imagination [28]. Fiction reading for eight weeks improved both working memory and long-term memory more than verbal puzzles [28]. Crossword puzzles may delay memory decline onset [10].
Sleep, stress management and other lifestyle factors
Beyond diet and exercise, several lifestyle factors influence how you keep your mind active over 55.
Getting quality sleep for brain repair
Inadequate sleep accelerates brain aging [29]. Poor sleep quality makes brains appear one year older than actual age [15]. Seven hours per night is the optimal amount for cognitive performance and mental health in middle age and beyond [30]. Sleep duration that's too short or too long impairs cognitive abilities like processing speed, visual attention, memory and problem-solving skills [30]. Consistent sleep schedules matter as much as duration. You maintain cognitive performance when you go to bed and wake at the same times each day [31].
Managing stress levels
Chronic stress may rewire the brain and affect memory function [32]. Ongoing stress releases cortisol that causes brain cell dysfunction and atrophy [33]. You protect brain health when you manage stress through exercise and mindfulness, preventing these damaging effects [33].
Avoiding smoking and limiting alcohol
Smoking increases dementia risk by 30-50% [34]. Cognitive decline slows when you quit smoking, even in later life [35]. Recent evidence suggests any level of alcohol consumption increases dementia risk, which goes against earlier beliefs about protective effects of moderate drinking [36]. The NHS recommends no more than 14 units weekly spread across three days.
Regular health check-ups
NHS Health Checks screen for conditions affecting brain health, yet less than half of eligible adults attend [8]. Regular monitoring helps identify and manage risk factors early, supporting prevention efforts to keep your mind active in old age.
Conclusion
Keeping your mind active after 55 requires a complete approach rather than relying on a single strategy. As shown above, physical activity, Mediterranean-style eating and mental challenges all contribute to cognitive health. Combined interventions produce better results than isolated efforts. Research shows up to 60% lower dementia risk among those following multiple healthy behaviors.
Supplements may help address specific deficiencies, but lifestyle factors remain the foundation of brain health. Quality sleep, stress management and regular health monitoring complete the picture. The strategies outlined here are practical ways to protect cognitive function and maintain independence well into later years. Start with small changes today rather than waiting for symptoms to appear.
FAQs
Q1. What hobbies can help slow down brain aging after 55? Activities like playing musical instruments, dancing, creating art, and learning new skills such as digital photography or quilting have been shown to improve memory and cognitive function. These engaging hobbies activate multiple brain regions and build cognitive reserve that helps protect against age-related decline.
Q2. How much sleep do I need for optimal brain health after 55? Seven hours per night is the optimal amount for cognitive performance and mental health in middle age and beyond. Both too little and too much sleep can impair cognitive abilities including memory, processing speed, and problem-solving skills. Maintaining a consistent sleep schedule by going to bed and waking at the same times daily also supports brain function.
Q3. What daily habits support brain resilience as we age? Key daily habits include getting quality sleep, managing stress effectively, maintaining social interactions, engaging in regular exercise, learning new things, and following a healthy diet. Research shows that combining multiple healthy behaviors can reduce dementia risk by up to 60% compared to following just one or none.
Q4. Does alcohol consumption affect dementia risk? Recent evidence suggests that any level of alcohol consumption may increase dementia risk, challenging earlier beliefs about protective effects of moderate drinking. The NHS recommends limiting intake to no more than 14 units weekly, spread across at least three days.
Q5. How does social engagement protect cognitive health? Frequent social activity is associated with a 38% reduction in dementia risk and 21% reduction in mild cognitive impairment risk. The least socially active older adults develop dementia around five years earlier than those who are most socially engaged. Activities like volunteering, attending community events, and maintaining regular social connections all contribute to better cognitive outcomes.
References
[1] - https://www.brainfacts.org/thinking-sensing-and-behaving/aging/2019/how-the-brain-changes-with-age-083019
[2] - https://www.health.harvard.edu/mind-and-mood/how-memory-and-thinking-ability-change-with-age
[3] - https://www.nia.nih.gov/health/brain-health/how-aging-brain-affects-thinking
[4] - https://www.aarp.org/health/healthy-living/workouts-for-brain-health/
[5] - https://www.bda.uk.com/resource/supplements.html
[6] - https://www.webmd.com/healthy-aging/what-to-know-about-cognitive-decline-in-older-adults
[7] - https://www.alzdiscovery.org/cognitive-vitality/blog/can-dehydration-impair-cognitive-function
[8] - https://www.alzheimers.org.uk/news/2019-01-03/less-half-take-health-check-could-prevent-dementia
[9] - https://www.which.co.uk/reviews/nutrition-and-supplements/article/vitamin-and-herbal-supplements-explained/vitamin-supplements-you-do-and-dont-need-aKpo97c6Axj0
[10] - https://www.hbrhc.com/blog/brain-exercises-for-seniors
[11] - https://www.healthline.com/nutrition/omega-3-fish-oil-for-brain-health
[12] - https://www.jamda.com/article/S1525-8610(25)00228-2/fulltext
[13] - https://www.alzinfo.org/articles/prevention/social-activities-can-help-keep-the-brain-young/
[14] - https://www.food.gov.uk/business-guidance/food-supplements
[15] - https://news.ki.se/poor-sleep-may-accelerate-brain-aging
[16] - https://pmc.ncbi.nlm.nih.gov/articles/PMC9641984/
[17] - https://www.aan.com/PressRoom/Home/PressRelease/1234
[18] - https://www.sciencedirect.com/science/article/pii/S0002916523463204
[19] - https://pmc.ncbi.nlm.nih.gov/articles/PMC4312724/
[20] - https://medicine.tufts.edu/news-events/news/how-b-vitamins-can-affect-brain-and-heart-health
[21] - https://pmc.ncbi.nlm.nih.gov/articles/PMC7229605/
[22] - https://www.tresible.com/how-to-choose-quality-supplements-in-uk-an-expert-guide/?srsltid=AfmBOooqlPzgSS4AglTk103MkQ7GmvzDNZyy9ZwzxNJV0XGP6hFq8MNi
[23] - https://www.health.harvard.edu/blog/learning-new-skill-can-slow-cognitive-aging-201604279502
[24] - https://theconversation.com/brain-training-games-remain-unproven-but-research-shows-what-sorts-of-activities-do-benefit-cognitive-functioning-240499
[25] - https://pmc.ncbi.nlm.nih.gov/articles/PMC11058077/
[26] - https://www.alzheimers.org.uk/about-dementia/managing-the-risk-of-dementia/additional-treatments-for-dementia-risk/brain-training
[27] - https://pmc.ncbi.nlm.nih.gov/articles/PMC8482376/
[28] - https://www.nationalgeographic.com/health/article/reading-longevity-brain-health
[29] - https://pmc.ncbi.nlm.nih.gov/articles/PMC9084918/
[30] - https://www.cam.ac.uk/research/news/seven-hours-of-sleep-is-optimal-in-middle-and-old-age-say-researchers
[31] - https://www.health.harvard.edu/blog/aging-and-sleep-making-changes-for-brain-health-2019031116147
[32] - https://www.health.harvard.edu/mind-and-mood/protect-your-brain-from-stress
[33] - https://www.psychologytoday.com/gb/blog/alzheimers-hope-the-horizon/201003/stress-the-brain-aging-and-alzheimers-disease
[34] - https://www.alzheimers.org.uk/about-dementia/managing-the-risk-of-dementia/reduce-your-risk-of-dementia/smoking
[35] - https://www.ucl.ac.uk/news/2025/oct/quitting-smoking-even-late-life-linked-slower-cognitive-decline
[36] - https://www.ox.ac.uk/news/2025-09-24-any-level-alcohol-consumption-increases-risk-dementia
