Skip to main content
Jennifer Lopez shines in balloon-sleeved blouse at American Music Awards.
Emma Stone at the Annual Actor Awards event.
Salma Hayek in a lavender gown at the Breakthrough Prize Ceremony.

Health

Doctors Say Avoiding These 6 Common Lifestyle Habits Can Help Lower Risk Of Alzheimer’s And Dementia: Poor Sleep, More

April 23, 2026 by Faith Geiger
shefinds | Health
Featured image

Your habits play just as much a role in your cognitive wellbeing as they do in your physical health. Unfortunately, some of the most common habits can take a serious toll on your brain over time, leading to a higher risk of cognitive issues like Alzheimer’s and dementia. From the foods you eat each day to your sleep patterns and even the time you spend (or don’t spend) with loved ones, seemingly small decisions can have a large impact in the long run.

To learn more about the worst lifestyle choices that could be hindering your brain health, we spoke to Dr. Sanjai Thankachen, Medical Director at New Leaf Detox, and Dr. Clint Salo, a board-certified psychiatrist at The Grove Recovery Community. They warn against sedentary lifestyles, social isolation, poor sleep, and more. Find all of their expert insight below.

house unit img
Women Are Swapping Their Boring Water For This Ice Pop Electrolyte Mix!
Image from SHEfinds

1. Lack Of Mental Stimulation

Just like muscles, the brain benefits from regular challenges. When daily routines become too repetitive and mentally unstimulating, cognitive flexibility may gradually decline.

"Finally, a lack of mental stimulation can gradually reduce cognitive flexibility," Salo notes. "The brain benefits from challenge and novelty, and repetitive routines without engagement can limit that stimulation."

So, there you have it: that daily crossword puzzle can go a long way.

Image from SHEfinds

2. Sedentary Lifestyle

You likely know that being a couch potato is a bad idea for your physical health, but did you know how much of an impact avoiding physical activity can have on your brain function?

"Sedentary routines are another common pitfall," Salo says. "Physical activity increases blood flow to the brain and supports neurological health, while prolonged inactivity can contribute to both anxiety and cognitive slowing."

So get out there and get active with some simple exercises!

Image from SHEfinds

3. Social Isolation

Humans are naturally social, and regular interaction plays a meaningful role in maintaining cognitive health. Spending time with your loved ones is actually important—and even necessary—for lasting brain health.

"Social isolation can also affect cognitive health," Salo explains. "Strong social interaction stimulates multiple areas of the brain, while isolation is associated with higher stress and increased risk of cognitive decline."

So, take some time to talk to a friend today!

Image from SHEfinds

4. Constant Multitasking

In a world filled with notifications and endless to-do lists, multitasking might feel like the best way to tackle everything on your plate. However, constantly switching between tasks can be exhausting for your brain and take a toll on your cognitive health.

"Many people underestimate how much constant multitasking strains the brain," says Dr. Clint Salo, a board-certified psychiatrist at The Grove Recovery Community. "Frequent task switching increases cognitive fatigue and reduces the brain’s ability to retain and process information."

Image from SHEfinds

5. Chronic Sleep Disruption

Getting inconsistent or insufficient sleep does more than leave you feeling groggy in the morning. As it turns out, it can interfere with critical brain processes that support long-term cognitive health.

"Chronic sleep disruption is one of the most overlooked contributors to cognitive decline," explains Dr. Sanjai Thankachen, Medical Director at New Leaf Detox. "During sleep the brain clears metabolic waste and resets key neurological systems. When sleep is consistently shortened or irregular, those processes become less efficient."

This is just one reason it's important to prioritize good sleep hygiene with healthy bedtime habits.

Image from SHEfinds

6. Prolonged Stress

Stress is unavoidable, but when it becomes chronic, it can do a lot of damage to your brain. When you're under too much stress for too long, your memory and emotions can take a serious hit.

"Prolonged stress can also have a cumulative effect on the brain," Thankachen says. "When stress hormones remain elevated for long periods, they can impact areas of the brain involved in memory and emotional regulation."

Making consistent efforts to manage stress can do wonders for your overall wellbeing.

Author:

Freelance Writer

Faith Geiger is a New York-based writer and editor. When she's not covering the latest in health and wellness for SheFinds, she spends her time watching reality TV with her roommates, browsing used bookstores, and enjoying live music. You can reach Faith at faithkgeiger@gmail.com.

Person eating a nutritious lunch, smiling.
Enjoying spearmint tea for potential skin benefits.
Frustrated older woman touching her head in stress.
Woman holding her chest in pain, looking distressed.
Different types of bread displayed on a wooden table.
Woman holding her head, appearing stressed or in pain.
Woman experiencing joint pain while sitting on a couch.
Dunkin' Donuts, Chick-fil-A, and Starbucks logos on display.
Woman adding sugar to a steaming cup of aromatic coffee.
Wooden board with bagels, blueberries, and butter arranged nicely.
Pouring vitamin D into palm for health.
Comparison of cooking spray and olive oil in kitchen setting.
Older woman taking her daily supplements with water.
Top view of Brazilian dish featuring rice, beans, and chicken.
Close-up of a handful of colorful supplements.
Checking time on a watch while enjoying breakfast meal.
Pouring supplement powder into a glass for a drink.
Jennifer Lopez exercising in stylish activewear outdoors.
Tired woman enjoying coffee break while relaxing at home.
Display of deli meats, sandwiches, and hot dog products.
Person eating a nutritious lunch, smiling.
Enjoying spearmint tea for potential skin benefits.
Frustrated older woman touching her head in stress.
Woman holding her chest in pain, looking distressed.
Different types of bread displayed on a wooden table.
Woman holding her head, appearing stressed or in pain.
Woman experiencing joint pain while sitting on a couch.
Dunkin' Donuts, Chick-fil-A, and Starbucks logos on display.
Woman adding sugar to a steaming cup of aromatic coffee.
Wooden board with bagels, blueberries, and butter arranged nicely.
Pouring vitamin D into palm for health.
Comparison of cooking spray and olive oil in kitchen setting.
Older woman taking her daily supplements with water.
Top view of Brazilian dish featuring rice, beans, and chicken.
Close-up of a handful of colorful supplements.
Checking time on a watch while enjoying breakfast meal.
Pouring supplement powder into a glass for a drink.
Jennifer Lopez exercising in stylish activewear outdoors.
Tired woman enjoying coffee break while relaxing at home.
Display of deli meats, sandwiches, and hot dog products.