Observations While Traveling Down the Road of Aging

Month: September 2024

How Aging Affects Memory, Intelligence, and Wisdom

September 2024

By Richard Fleming

Photo courtesy of Dominic Kurniawan Suryaputra

(In this post, I am not addressing cognitive problems from dementia, which are sad and crushing. My focus is on what happens in the course of “normal” aging.)

To be honest, there are often times when I don’t feel “older but wiser.” Older, yes. Wiser, not so much. And I think many seniors feel similarly.

So what does the cute phrase which sits atop this blog really mean?

To understand, it may be useful to look at how memory, intelligence, and wisdom evolve and as we grow old. These three characteristics are closely interconnected. But they are also distinct. The normal aging process produces changes in all three.

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Let’s start with memory. All seniors begin to have trouble remembering things. It happens to all of us to varying degrees. And the problem typically tends to worsen as we grow older.

Using myself as an example, I tend to forget names. I often have trouble recalling past events, like where we went on vacation two years ago. Or the location I celebrated my 60th birthday. Or where I put the stapler. Or why I walked upstairs to the bedroom this morning. These small gaps are frustrating, but pretty much inevitable with increasing age. Sometimes I can dig up the missing information by concentrating and thinking really hard about what I’m missing. But at other times it is more likely to come back if I stop trying and just wait for the missing information to pop into my head.

The memory problems of seniors stem from the same aging processes that affect all organs in our body. Cellular debris from normal metabolism accumulates, making neural connections less efficient. Neurons (our brain cells) shrink and their connections to each other slowly fray. Although the metaphor is inaccurate in many ways, I view my brain as a fixed-capacity hard drive. The storage capacity filled up at age 60 or so, and any new incoming information requires some existing data be deleted. I keep looking for a way to defrag my hard drive to increase its storage capacity, but so far no luck. If anyone has ideas, I welcome them.

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Moving on to intelligence, this brain function relies on a good memory. But it involves more than simply being able to recall facts and data. Intelligence is the ability to process information, learn new concepts, and reason through complicated ideas. Because our memory tends to decline over time, it is not surprising our intelligence will follow a similar trajectory. It is hard to be smart when there are things we don’t know or can’t recall.

But for seniors, intelligence is often better preserved and declines more gradually than memory. Why? It is because a lifetime of making decisions can help us reason through complex situations more efficiently. Our brains benefit from years of experience, and this can offset some of the decline in memory.

An example from my own experience: older physicians often make difficult decisions as ably and reliably as younger docs. Young physicians typically have a larger database of facts readily available in their brains. They are more recently trained and their memories are more facile. But older docs can often navigate complicated clinical problems just as quickly as their younger colleagues. Their long years in practice equip them to understand a patient’s situation and arrive at answers more efficiently.

However, time inevitably catches up. As the years accumulate, the complex neural networks in our brains weaken. We begin to lose some of the efficiencies in neural processing that help counter the attrition in our memory. For those of us lucky enough to live into the upper age ranges, our intelligence will sooner or later fray around the edges. And this slippage will continue.

To apply this to my example above, if I were to develop a serious cardiac problem, I would be perfectly comfortable consulting with a cardiologist in her 60s but would be hesitant to see one in her 80s, even though both have great reputations.

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Finally, let’s tackle wisdom. At first glance, wisdom and intelligence may seem identical. Smart people are commonly viewed as both intelligent and wise. But wisdom is not the same as intelligence. Wisdom is more nuanced and complex. Wisdom relies on understanding, empathy, and emotion. It requires good judgment and an ability to anticipate the consequences of decisions. Wisdom emerges from the ability to integrate intelligence into the complicated reality of life.

People can be very intelligent but not very wise. A high school economics teacher might be whip-smart about a range of economic theories but not wise enough to successfully explain them coherently to a classroom of 16 year olds. A politician may be very knowledgeable about a range of policy details but not wise enough to understand the impact of these policies on the real world, short term and long.

Intelligence tends to be detailed and quick. Wisdom tends to be generalized and gradual.

So how is it that seniors can become wiser as they grow older? Though wisdom benefits from memory and intelligence, it is not determined by them. Declines in memory and intelligence do not necessarily lead to less wisdom.

Wisdom requires a richness and depth of experience and understanding. And seniors accumulate these by the bucketful. Over the years, we live through the good and the bad. We see the impact of our decisions on others and ourselves. We live with how the actions of others affect us, our families, and our communities. With time, we tend to gain empathy, understanding, and judgment. We’ve been down many of these same roads before, and we know what lies around the next bend. We see and understand the world differently than when we were young.

And this enables us to gain a higher level of wisdom, even as our bodies and minds age and grow more fallible.

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For seniors, our journeys into and through old age share many features in common. At the same time, each person’s experience is unique. Memory, intelligence, and wisdom do not change uniformly and follow the same time frame for everyone. Many factors impact whether we can grow older and whether we do become wiser. Your results may vary.

Speaking for myself, I am fortunate to still be growing older. I hope to gain more wisdom by living life as fully as possible. And I trust that at some point I will acquire enough wisdom to know how to grow old with perseverance, acceptance, dignity, and grace.

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Signposts of Old Age

September2024

By Richard Fleming

Photo courtesy of Mourad Saadi

I still find it challenging to accept the fact I live in the land of old-age. On the surface, I do not feel that different than 10 years ago, when I was in my early 60s. I wake up, have my morning coffee, read the paper, and embark on my day. Yes, I have some more aches and pains. The joints feel a bit stiff at times. But I have been lucky as far as serious health issues, and I just don’t feel like I’m elderly, an oldster, a dinosaur. I feel like I’m maybe halfway through middle-age.

But it is important to stay grounded in reality. And the reality is this: I am currently older than 90% of the population of the U.S. I don’t have to search an online encyclopedia to know I am a senior in every sense of the word – officially, unofficially, practically, socially, scientifically, medically, and culturally.

I realize, too, that I am seeing an increasing number of signposts which help clarify that I am a citizen of the nation of the old. In case anyone in my generation reading these words may also be in denial, I want to share some of the markers of old-age that I am coming to understand. A person can walk past – or experience – two or three and still be middle-aged, but once you get to four or more, the verdict is in. And there is no appeal.

  • You decide to listen to an oldies station on a streaming service and are surprised it is filled with songs from the 2000s and 2010s.
  • You’re watching a movie whose main characters are Gen Z, and you don’t understand most of the slang they use.
  • Moving your joints creates noises people can hear across the room.
  • You’re always on the lookout for chairs, wherever you are.
  • Young people in the grocery store initially line up behind you, seeing that you are one cart away from the checker. But when they get a good look at you, they switch to a longer line because they assume you will take forever to figure out how to pay for your groceries.
  • Cashiers in stores start telling you how and where to tap your credit or debit card on the terminal before you even get a chance to use the card.
  • Millennials or Gen Z’ers you’re interacting with in public call you “young fella” or “young lady.” And they say these words loud enough for others to hear.
  • You start needing to see the doctor four or more times per year.
  • When you go out for coffee with friends, an increasing proportion of your time is spent talking about medical issues that you and your friends are experiencing.
  • You start accumulating so many prescription medications they require two or even three shelves in the medicine cabinet.
  • You always need the closed captioning turned on when you watch TV.
  • The TV shows you are watching have commercials mostly about wheelchairs, medications, and nearby senior living options. And yes, you still watch broadcast television.
  • You start regretting you do not live in a one-story home.
  • Your weight starts to creep up year by year even though your eating habits have not changed. Human metabolism slows down in old age – a betrayal if there ever was one – meaning we must consume fewer calories to maintain a stable weight.
  • It becomes significantly harder and more energy-draining to babysit your younger grandchildren now than it was to watch your older grandchildren when they were the same age.
  • It takes all day to complete the basic chores and errands required to keep your home functioning. In the past, you could do them all while working full time and raising kids, and still have time for leisure activities.
  • You start paring down your bucket list, as it becomes clear you cannot possibly accomplish all the goals you added to it when you were middle-aged.
  • You start spending more time thinking about how your end-of-life will unfold, and what your legacy will be.
  • Your oldest child turns 50.
  • One of your children becomes a grandparent.
  • Cuddling in bed at night feels as intimate as, well, you know…

Though I have not walked past every one of these markers of old age, I have experienced many. Enough to make my status clear. I am sure this list is not complete and welcome additions if you would like to leave a comment.

These signposts help define the boundary between the lands of middle-age and old-age. This boundary is not a brick wall we abruptly encounter one day on our expedition into the future. We are not middle-aged one day, old-aged the next. There is a zone, a period of transition as we cross from one land into the next.

But they are two separate worlds. And the thing is, once we have entered the realm of the silver-haired, we can never return to the land of the middle years. We may occasionally look back and see that world retreating behind us. We may recall the joys and trials of traversing the realm of middle-age. But we must continue our journey forward, moving further into the land of old-age, where we will discover its unique joys. And its unique trials.

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