Understanding and Caring for Your Body as It Ages
Updated: Sep 28
So, What Are We Looking at Here?
Caring for your body as it ages begins with understanding the physical changes that occur over time and the evidence‑based strategies that help support long‑term wellness.
Aging is the process of everything — every cell, every system, every habit, every experience. It’s not a single event but a lifelong shift in how the body repairs, adapts, and responds to the world. What we’re really looking at is change: slow, steady, universal, and deeply human. Aging isn’t just about wrinkles or birthdays; it’s the biology of time, the psychology of identity, and the culture we’re all trying to keep up with.
As the years unfold, the world’s complexity and the passage of time leave their quiet imprint on us — not unkindly, but in the way a life fully lived does.
By the time we are 60, we’ve lived more than half a million hours — we have spent our time absorbing the world, learning from it, and being shaped by it. Over those years, our inner child settles into an adult shaped by growth, joy, sorrow, and change. We become more emotionally mature, able to see both the yin and the yang in ourselves and in others. We have seen and felt the sunshine, the soft gray patter of the rain, and the cold of winter — when we marveled at the unique design of every snowflake.
As we reflect on our lives, we begin to identify our deepest values. We acknowledge what we’ve done well — and where we’ve stumbled — and we come to accept all of it. We explore our worth — to ourselves, to the people we love, and to society. We come to see our capabilities, our strengths, and our talents more clearly. And as we age, we also come to know our limitations, which naturally grow with age. We can resist them, or we can accept and work with them, sometimes even discovering new abilities we didn’t realize we had. Maslow called this deepening self‑understanding “self‑actualization” — the gradual process of becoming more fully ourselves. As we grow into ourselves, we also come to understand something else about life: the people around us change too.
We walk a long path, and along the way some people travel beside us for a short time, some stay with us for many years, and some leave far sooner than we ever imagined. Each one shapes us, even after they’re gone.
At this time in our lives, we have the freedom and opportunity to reinvent ourselves, guided by the long history of our own lived experience. And as we deepen our integrity and empower ourselves, we become a source of strength for the generations who follow.
The Aging Population is Growing in the US
We have an aging society. In 2025, there were nearly 64 million people in the US over 65. This makes up 18.4 percent of the population. In 2030, estimates of those over 65 years are 73.7 million (1)(2)
Longevity, or the ability to live a long life, depends on many factors. Modern medicine plays a partial role, but it is only one factor in the story of longevity. Genetics also plays a role, shaping certain health traits and tendencies we carry through life. The experiences we’ve had throughout our lives, the environments we grew up in, and the lifestyle choices we have made (and continue to make) all shape how long we live and our quality of life.
Our Culture Shapes Aging — “Plastics."
Our culture in the United States can be hard on aging people. While many societies honor their elders, ours often views aging through a harsher lens. Much of our media reinforces the idea that “young is good and old is bad.” So people try to alter their facial features — their “lifelines,” the map of the roads they’ve traveled — along with their breasts and bellies. In 2022, Americans spent more than 26 billion dollars on both minor and major plastic surgery (3). Why? Most of these procedures weren’t done for health reasons, but because our society glorifies a narrow, youthful ideal of beauty. Too often, these surface traits are valued more than experience, wisdom, and the inherent beauty of age.
A Deeper Truth About Aging
While many people may achieve a youthful, more “attractive” look, the rest of the body is often overlooked. Wanting to look good is completely understandable, but nurturing your mind, body, spirit, and overall well‑being is equally, if not more, important. On its own, plastic surgery can’t do all the work. As we grow older, we often rely less and less on outside approval and more on the inner strength and confidence that come from greater self‑awareness.
We inherit certain conditions — allergies, vision problems, high blood pressure, high cholesterol, some types of arthritis, some cancers, and tendencies toward migraines, thyroid issues, or osteoporosis. While we can’t erase these, many can be minimized so they become far less debilitating as we age.
There are also conditions we can often avoid altogether — including type 2 diabetes, many obesity‑related problems, some mental health challenges, lung diseases such as COPD and smoking‑related cancers, certain skin cancers, and others — simply by changing our habits and environment.
Why You Should Care
The pages ahead explore the changes our bodies experience as we age — and the. You can change things and live a healthier and happier life.
Age‑Related Changes and What We Can Do About Them
The body is an incredibly well-oiled machine; however, living is a lot of work: It is no surprise that, with time, things do get a bit rusty. Continued use, genes, and the environment lead to chemical and cellular instability.
As years go by, parts of the body change and tend to decline. This includes the cardiovascular system, respiratory system, ears, eyes, nose, and throat; the digestive and genitourinary tracts; the endocrine, musculoskeletal, neurologic, and immune systems. Even the normal microbiome — the organisms that live on and in your body to protect you — can and does change.
Along with these physiologic changes, psychological changes also occur.
All of the cells in our body work together inside a background of extracellular fluid. As this fluid changes with age, it affects how our tissues repair, how hydrated our skin feels, how flexible our joints are, and even how strong our immune system stays.
Understanding Your Body Helps Support Healthier Outcomes in the Future
Aging is a transition we can move through with confidence when we understand what’s happening inside our bodies. When we recognize how our inner environment naturally changes over time, we gain the knowledge and motivation to support our energy, mobility, and vitality at every stage of life.
Understanding the microcosm of your body’s inner environment helps explain the basis of the aging process — and shows that it’s not just your imagination.
Your Body Is Made Up of About 3 Trillion Cells
Your body’s inner environment changes with age, and it starts at the cellular level.
First, your body is made up of about 30 trillion cells. These cells work together to repair damage, replace worn‑out cells, eliminate waste, support growth, and maintain healthy skin, blood, and the gut lining. They also make energy and carry out everyday tasks your body needs to stay healthy.
Healthy cells are essential for keeping the body functioning well. Many specialized cells divide year after year, but this division gradually slows as we age — and in some cell types, it eventually stops altogether. When cell division slows or stops, the body’s ability to repair damage and renew tissues declines, threatening optimal function.
Extracellular Fluid: The Environment Your Cells Depend On
Collagen is often talked about in skincare and wellness, but its role inside the body is far more important than most people realize.
Extracellular fluid is the fluid that surrounds and bathes your cells. It carries nutrients, oxygen, and signaling molecules your cells need to function.
Why it matters: This fluid environment contains one of the most important substances found outside your cells — collagen.
Collagen is the body’s main structural protein. It gives tissues their shape, strength, elasticity, and ability to repair. As we age, collagen production decreases, and existing collagen fibers become weaker, fragmented, disorganized, and lower in quality.
You see this on the outside as sagging skin and wrinkles. But collagen loss also affects the inside of the body: it weakens bones and ligaments, slows wound healing, reduces blood vessel resilience, and thins the gut lining.
Collagen isn’t the only extracellular substance that declines with age. Other key components — such as elastin (responsible for stretch and recoil), hyaluronic acid (responsible for hydration and cushioning), and proteoglycans (responsible for shock absorption and tissue support) — also diminish or change in quality over time. Together, these age‑related changes weaken the body’s structure and function, especially in the skin, joints, blood vessels, and connective tissues.
This is why taking care of your body becomes more important over time. It’s simply part of the journey — a reminder that our focus must be on keeping our minds and bodies well and strong so we can continue to feel our best. As an old familiar saying goes, “To every thing there is a season, and a time to every purpose under heaven.” Aging is one of those seasons — and understanding it leaves us better equipped to handle the future.
The Changes That Come With Time
Body Changes With Age: Understanding and Caring for Your Body as It Ages
Organs and Systems of the Body
As we age, changes occur not only in our skin and joints but also within the body’s major organs and internal systems like the heart and lungs. These changes with aging influence how we feel, how we function, and how resilient we are over time. Understanding these helps us recognize what aging really means and how to navigate it with confidence.
The following addresses changes in the heart, lungs, eyes, ears, nose, and throat (EENT system); the gastrointestinal system; the genitourinary system; the neurological and endocrine system; and other changes people face as they age. Each section also discusses ways to protect against and prevent problems, and steps you can take to improve things, conventional and otherwise.
The following addresses support and, hopefully, helps you build a mindset of resilience, determination, and the power to forge ahead into the future with little doubt.
Read About These Changes and What You Can Do
The Heart: Changes Over Time - Understanding these changes and how to prevent and even improve your circulation
How Your Lungs Change Over Time - Understanding these changes and how to prevent and even improve your breathing
Learn about ways to optimize your lung function to maintain it and possibly improve it- with approaches like breathing exercises, supplements, and medication in:
