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Life Stages and How We Change As We Get Older

Why do you change as you get older? Many people think that as humans get older, they become set in their ways – and stop changing and growing as individuals. But is that really true? What causes these changes as we get older, and is it a good or bad thing? Below, I reveal the life stages that developmental psychologists say you can expect to experience and, more importantly, how to make the most of each of these stages so that you can thrive. Furthermore, I describe some physical changes that happen with aging and how to slow their onset.

How to Be Robustly Healthy – both Mentally and Physically

People change as they get older for a variety of reasons.

We accumulate memories as we get older, and those memories can affect how we see the world and how we interact with people.

Additionally, our hormone levels change as we get older, leading to different feelings and moods.

And finally, our interests and hobbies often change as we get older – we may no longer want to do the things we used to do or may find new interests. All of these factors together create a person who is different at every stage in life.

The trick to living a fulfilling life – filled with adventure, satisfaction, joy, and meaning – is to embrace each of these life stages and maximize the learning potential within each stage.

What Are the Life Stages?

Psychologist Erik Erickson established eight life stages. The last two stages – middle adulthood and late adulthood – are recognized as prime opportunities to experience feelings of accomplishment and well-being.

Scientists acknowledge that there can be both losses and gains in cognition in the last two life stages. Though information processing abilities may decline, crystallized intelligence that draws upon experience and knowledge may improve.

life stages

One of the Life Stages: Middle Adulthood

Middle adulthood, which begins around 40, is for many people the prime earning years.

At this life stage, some people have acquired the social skills and professional aptitude necessary to have a robust career.

Ideally, during middle adulthood, you’re able to position yourself so that:

  • You can enjoy those with whom you work.
  • You can find aspects of your job interesting while also having opportunities for independence and advancement.

Additionally, this life stage presents an opportunity to enjoy family life – either with biological family or family-of-choice – and deepening friendships.

One of the Life Stages: Late Adulthood

As a person enters their sixties, they are in a life stage within which they can evaluate their contributions to the world so far. They can ask themselves honestly:

  • Have my actions made more of a positive difference in the world?
  • Have my actions made more of a negative difference in the world?
  • If I were to die today, what would my overall legacy be?

Late adulthood presents an opportunity to be brutally honest with one’s self and to live life with increased integrity and compassion by creating a legacy of kindness and benefit to humankind.

two mature adults over fifty and fit and firm
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Why Do We Change As We Get Older?

People change as they get older because of specific biological and psychological events.

One major reason is that people have different memories as they get older.

For example, someone in their 20s may remember specific details about a party from ten years ago. In comparison, someone in their 70s may remember the general feeling of the party but not any specific details.

  1. Our brains change as we get older.
  2. We learn new things and form new memories.
  3. Our hormones change, which can affect our moods and emotions.
  4. Our physical abilities change, making some activities harder than before.
  5. We develop different interests and hobbies.
  6. We see the world differently as we gain more experience.

Life Stages: Our Bodies Change As We Get Older

As we get older, our bodies go through a lot of changes.

We start to lose muscle mass, our skin becomes less elastic, our hair becomes thinner and begins to turn gray, our posture becomes rounded, and our memories start to fade.

But why does this happen?

One of the biggest reasons is that our hormone levels fluctuate as we get older:

  • The testosterone level in men starts to decline around age 30, leading to muscle loss and decreased bone density.
  • In women, menopause typically occurs around age 51, accompanied by a sharp decrease in estrogen levels. This can cause hot flashes, night sweats, and vaginal dryness.

It’s important to stay active and engaged in activities that we enjoy so that we can continue to lead fulfilling lives.

As we get older, our bodies change. We may not be as fast or as strong as we once were. We may lose some of our hair, get wrinkles, or experience skin conditions. But these physical changes are only a part of aging. Just as significantly, we also change mentally and emotionally.

Life Stages: Our Minds Change As We Get Older

Our outlooks and passions shift as we age.

For example, we may become less interested in working out and more interested in reading or traveling.

Our memories tend to become less reliable as we get older.

We may forget things more easily, and it may take us longer to learn new information.

This is because the part of the brain that stores memories declines in function as we age.

Another reason for mental and emotional changes is that our hormones change as we get older.

For example, levels of the hormone estrogen decrease in women after menopause, which can lead to hot flashes, sleep problems, and mood swings. Likewise, levels of the hormone testosterone decrease in men as they age, which can lead to fatigue and a decreased sex drive. This can affect a person’s appetite, mood, and energy levels.

As people get older, they typically become less interested in things that used to excite them and more interested in relaxing and calming activities. This shift in interests and hobbies is partly due to changes in the brain itself.

Finally, our interests and hobbies often change as we get older. This is partly due to changes in our mental and emotional state, but it can also be simply due to a desire for new experiences. For example, someone who enjoyed hiking and camping in their youth may prefer gentler activities in their late ages, such as baking or collecting.

We often find ourselves more drawn to activities that reflect who we have become as people – from reading certain types of books to pursuing specific passions or hobbies.

6 Supplements that Have Been Proven to Help Change How We Age in a Positive Way

If you’re already leveraging the life stages to make the utmost of their positive potential, you still might also need to address the downsides of the life stages.

Cancer, heart problems, and strokes are generally the causes of mortality in the modern world. What these three conditions have in common is that they are largely preventable through lifestyle interventions:

In particular, a few foods and supplements have been relentlessly proven by science to be helpful. Here are six of them:


A breakfast of blueberries can improve memory formation and verbal skills – and even decrease blood pressure. These benefits can occur after just six weeks of eating blueberries consistently. According to the research website Examine.com, “Blueberries increase growth factors in the brain, which allows brain cells to grow and have an easier time communicating. This is a rare effect among food products.”

Vitamin D

Did you know that surplus belly fat has been linked to Vitamin D deficiency? Additionally, too-low Vitamin D levels are linked to many age-related diseases, so eating foods with naturally occurring Vitamin D and/or getting sunlight is essential. A blood test with your doctor can reveal your current levels and insight into how much you might need to supplement. Like most supplements, taking too much can be just as bad (or worse) as not getting enough – so supplement strategically.

Vitamin B12

An under-the-tongue Vitamin B12 sublingual spray can be helpful to people over the age of 50 because as we age, it’s more difficult for us to absorb vitamin B12 – the danger of not having enough B12 is anemia and a loss of clear-headed thinking. However, there are certain medical conditions for which B12 supplementation is unwise, so ask your doctor first.


High levels of protein intake are connected to many benefits in people over 50, including longevity.

Suppose you have a challenging time eating enough protein each day – how much you need depends on your genetic structure and your current level of fitness training. In that case, you might want to try unsweetened powders such as whey isolate, hemp, or sprouted brown rice. Aim for 1.5 grams of protein per kilogram of body weight. But if you have any existing medical problems (such as kidney issues), ask your medical doctor first.


Mature people produce less L-carnitine within their bodies, so supplementation might provide some worthwhile benefits – particularly if you’re a fitness enthusiast. Carnitine improves blood flow, encourages better energy use in brain cells, improves muscular control, and aids in fat loss. Carnitine is found within meat but can also be supplemented in capsule form. Ask your doctor about finding the proper dosage to meet your unique needs.


Creatine increases your power output – it improves muscle growth, potency, and repair. It probably also helps with cognition in those of us over the age of 50. Creatine supplementation does cause a bit of water retention, so ask your doctor what the right dose is for you and make sure creatine supplementation doesn’t clash with any of your medications or tax your kidneys.

Within Your Lifetime, You Are Meant to Have Distinct Life Stages

All of these changes that mature adults experience can be difficult at times, but they are ultimately a natural part of growing up and maturing into adulthood.

Ultimately, life stages help us grow and evolve as individuals and experience the richness of life in new ways with every passing year.

It’s important to remember that everyone changes in different ways and at different rates, so don’t worry if you feel like you haven’t hit all these milestones yet.

The most important thing is to stay positive and embrace the new version of yourself – after all, each stage of life has its unique benefits.

It can be particularly helpful to ask yourself:

  • So far, what do I like most about getting older?
  • What do I like least about getting older, and are there any interventions I can do to alleviate those downsides of aging?


Global Aging, National Institute of Aging – https://www.nia.nih.gov/research/dbsr/global-aging

Youth and Vitality Research – https://examine.com/topics/longevity/research/

Understanding Impact of an Aging Society – https://www.nia.nih.gov/about/aging-strategic-directions-research/goal-society-policy

Analysis of Life Satisfaction in Mature Elders – https://populationandeconomics.pensoft.net/article/47192/

Life Stages of Adulthood – https://courses.lumenlearning.com/wmopen-psychology/chapter/reading-adulthood/