How A Stressful Job Could Keep Your Mind Sharp After Retirement

How A Stressful Job Could Keep Your Mind Sharp After Retirement
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Stressed at work? That might just be a good thing. According to a new study a demanding job that causes you stress today could benefit you in the future.

The study, conducted by the University of Michigan Institute for Social Research, suggests that having a challenging working environment today has the potential to improve a person's memory later in life.

Gwenith Fisher, a faculty associate at the University of Michigan Institute for Social Research and assistant professor of psychology at Colorado State University, explained: "Based on data spanning 18 years, our study suggests that certain kinds of challenging jobs have the potential to enhance and protect workers' mental functioning in later life."

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The research analysed data on 4,182 participants in the U-M Health and Retirement Study who had worked in a wide variety of jobs before they retired. The participants had each had been doing the same type of work for more than 25 years on average.

Each person was interviewed about eight times between 1992 and 2010, starting when they were between the ages of 51 and 61.

The study assessed participants' mental functioning, using standard tests of episodic memory and mental status over the 18 year period. The tests included recalling a list of 10 nouns immediately after seeing it and also after a time delay, and counting backwards from 100 by sevens.

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Foods That Impact Stress
Nuts(01 of12)
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Nuts like walnuts, almonds, pecans and hazelnuts help maintain healthy cortisol levels, says Dr. Doni Wilson, a naturopathic doctor and author of The Stress Remedy. The vitamins in nuts can also help strengthen the immune system, which can be hindered by stress. (credit:Shutterstock)
Fatty Fish(02 of12)
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Wild salmon, mackerel and sardines can all help prevent cortisol from rising, notes Dr. Doni. The omega-3s in these fish are the key to that inhibition, studies have found. (credit:Shutterstock)
Berries(03 of12)
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Cortisol is not all bad — it's most basic use is to help your body react to stress. It's when the cortisol is present in the long term that it's an issue, so the antioxidants and vitamin C in berries like strawberries, blueberries and cranberries can help ensure the hormone level is maintained properly. (credit:Shutterstock)
Leafy Greens(04 of12)
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Spinach, kale, chard and more contain magnesium, which helps muscles relax, and calcium, which is calming, says Dr. Doni. (credit:Shutterstock)
Dark Chocolate(05 of12)
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Dark-chocolate specific antioxidants, or flavonoids, have been shown to actually reduce cortisol specifically, so keep some high-quality chocolate on hand when you know it'll be a tough day. (credit:Shutterstock)
High-Fibre Carbs(06 of12)
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High-fibre carbs like oatmeal and quinoa not only keep you full for longer, but can also increases serotonin for longer periods of time than refined carbs, says Dr. Doni. (credit:Shutterstock)
Green Tea(07 of12)
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Drinking tea can decrease cortisol, increase endorphins and oxytocin, relax muscles, and improve your mood, says Dr. Doni. (credit:Shutterstock)
Protein(08 of12)
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Including protein with every meal — which you should be eating every 3 to 4 hours — can help balance your hormone levels and keep cortisol from spiking and making you more stressed. (credit:Shutterstock)
Salt(09 of12)
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Salt is one of the no-no foods when it comes to feeling stressed — which is exactly why you want that bag of chips so badly. Salt can trigger more cortisol and a boost of serotonin, but then drop off, leaving you feeling worse than you did before. (credit:Shutterstock)
Sugar(10 of12)
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The same goes for sugar, which has an immediate impact on blood sugar levels and can cause quick spikes and drops. (credit:Shutterstock)
Caffeine(11 of12)
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If you're stressed about getting things done, one of your first inclinations is to drink coffee or soft drinks to stay awake and finish. But don't do it first thing in the morning. Since cortisol is released first thing in the morning and is its own "upper" of a sort, studies found it's best to wait until approximately 9:30 a.m. for your coffee — and try to stick to just one. (credit:Shutterstock)
Alcohol(12 of12)
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Like caffeine, alcohol is another beverage we turn to when stressed, to just take a bit of the edge off. The problem is that alcohol also increases cortisol levels, leaving us just as stressed as we were before. (credit:Shutterstock)

Although the differences at the time if retirement were minimal, they grew over time. The study found that people who had worked in jobs with greater mental demands were more likely to have better memories before they retired and more likely to have slower declines in memory after retiring than people who had worked in jobs with fewer mental demands.

"These results suggest that working in an occupation that requires a variety of mental processes may be beneficial to employees," said Jessica Faul, an ISR assistant research scientist.

"It's likely that being exposed to new experiences or more mentally complex job duties may benefit not only newer workers but more seasoned employees as well.

"Employers should strive to increase mental engagement at work and, if possible, outside of work as well, by emphasizing life-long learning activities," she said.

Although the study did consider the formal education and income of each participant, it has been noted that people with higher levels of mental functioning may have picked jobs with more mental demands.

"What people do outside of work could also be a factor," Fisher said. "Some people may be very active in hobbies and other activities that are mentally stimulating and demanding, while others are not."

Fisher's research is published this month in the Journal of Occupational Health Psychology.