# Ageing: What is Normal? ## Healthify (Health Navigator) | Healthify He Puna Waiora **Source:** [https://healthify.nz/health-a-z/a/ageing-what-is-normal](https://healthify.nz/health-a-z/a/ageing-what-is-normal) **Capture Date:** 2026-06-07 --- ## Overview Ageing involves gradual changes to the body and mind. Some changes are a normal part of growing older, while others may signal an underlying health condition that should be checked. This page explains the typical age-related changes across different body systems and helps distinguish "normal ageing" from "when to seek advice." --- ## Cardiovascular System (Heart and Blood Vessels) ### Normal Age-Related Changes - **Stiffening of blood vessels:** Arteries naturally become less elastic over time, which causes blood pressure (especially systolic — the top number) to rise gradually. - **Heart muscle changes:** The heart wall thickens slightly, and the heart's left ventricle may become slightly stiffer. The heart rate at rest tends to stay the same, but the maximum heart rate during exercise decreases. - **Reduced exercise tolerance:** It takes longer for the heart rate to increase with activity and to return to normal after activity. This is normal — you may feel more winded during activity than when younger. ### When to See a Doctor - **New or worsening chest pain, tightness, or discomfort** — not a normal part of ageing. - **Shortness of breath** that comes on with minimal activity or at rest. - **Palpitations** — feeling your heart racing, fluttering, or skipping beats, especially if this is new or frequent. - **Dizziness or fainting** — especially when standing up (postural hypotension may be normal to a degree, but fainting is not). - **Swollen ankles or legs** that are not related to a known injury. - **Blood pressure that is consistently above 140/90 mmHg** — not normal; needs management. --- ## Bones, Joints and Muscles ### Normal Age-Related Changes - **Bone density loss:** Bones naturally become less dense — especially in women after menopause due to reduced oestrogen. This increases the risk of osteoporosis and fractures. - **Joint stiffness and wear:** Cartilage thins and loses elasticity. Joints may be less flexible and may creak or pop. Some mild aching after activity is normal. - **Muscle loss (sarcopenia):** Muscle mass and strength decrease progressively from around age 30, accelerating after 60. This contributes to reduced strength, balance, and mobility. - **Height loss:** People typically lose 2–5 cm in height over their lifetime due to spinal disc compression and postural changes. - **Slower movement:** Reaction time slows and movements may be less coordinated. ### When to See a Doctor - **Sudden or severe joint pain** — especially after a fall or injury. - **Joint swelling, redness, or warmth** — may indicate inflammation or infection. - **Morning stiffness lasting longer than 30 minutes** — may indicate arthritis (e.g., rheumatoid arthritis). - **Difficulty standing up from a chair** without using your arms, or difficulty climbing stairs. - **A fall** (even if not injured) — indicates underlying muscle weakness or balance problems. - **Loss of more than 2–3 cm in height** over a short period, or developing a curved spine (kyphosis / dowager's hump) — may indicate spinal fractures due to osteoporosis. --- ## Digestive System ### Normal Age-Related Changes - **Slower digestion:** Food moves through the digestive tract more slowly. The stomach empties more slowly. - **Reduced stomach acid production:** The stomach produces less acid, which can affect absorption of certain nutrients (especially vitamin B12, calcium, and iron). - **Reduced bowel motility:** The colon is less efficient, which can lead to **constipation** — a common complaint in older adults. - **Reduced sense of taste and smell:** Taste buds decrease in number and sensitivity. The sense of smell also declines, which can reduce appetite. - **Feeling full sooner:** The stomach does not relax as much when food enters, so you may feel full after smaller meals. ### When to See a Doctor - **Unexplained weight loss** — losing weight without trying is not normal and should be investigated. - **Difficulty swallowing (dysphagia)** — coughing or choking when eating or drinking. - **Blood in stools** (bright red or black/tarry) — never normal. - **Persistent change in bowel habits** — new or worsening constipation, diarrhoea, or change in stool calibre. - **Persistent abdominal pain** or bloating. - **Vomiting** — especially if it is recurrent. --- ## Bladder and Urinary System ### Normal Age-Related Changes - **Bladder capacity decreases:** The bladder holds less urine, so you may need to urinate more frequently (especially at night — nocturia). - **Bladder muscles weaken:** The bladder may not empty fully, and you may have a weaker urine stream. - **Reduced kidney function:** Kidneys become less efficient at filtering waste and concentrating urine. - **Women (post-menopause):** Reduced oestrogen can cause thinning of urethral lining, increasing the risk of urinary tract infections (UTIs) and urgency. - **Men:** Prostate enlargement (benign prostatic hyperplasia or BPH) is very common — causes frequency, urgency, and a weaker stream. ### When to See a Doctor - **Pain or burning when urinating** — may be a UTI or other infection. - **Blood in urine** — never normal. - **Incontinence** that is new, worsening, or affecting quality of life — especially if you are leaking urine when coughing, sneezing, laughing (stress incontinence) or having a sudden, overwhelming urge to urinate (urge incontinence). - **Difficulty starting urination** or a very weak stream (men) — may indicate prostate issues. - **Getting up to urinate more than twice a night** on a regular basis, especially if disrupting sleep. - **Frequent UTIs** — more than 2–3 per year. --- ## Memory and Cognitive Changes ### Normal Age-Related Changes It is a common misconception that "senior moments" are always the start of dementia. Many cognitive changes are part of normal ageing. **What is normal:** - **Slower processing speed:** It takes longer to learn new information, react, and respond. This is called cognitive slowing and is very common. - **Working memory declines:** The ability to hold information in mind for a short time while doing something else (e.g., remembering a phone number while dialling) — this declines with age. - **Episodic memory:** You may be slower to recall a specific event or detail (e.g., "what did I have for breakfast yesterday?") but with time or cues it comes back. - **Tip-of-the-tongue moments:** Difficulty retrieving names or specific words — very common and normal. - **Prospective memory:** Remembering to do something in the future (e.g., take medication at a certain time, attend an appointment) — mildly declines with age. - **Divided attention:** It is harder to do two things at once (e.g., walking and talking, cooking while watching TV). **What is preserved (holds well with age):** - **Semantic memory:** General knowledge, vocabulary, and understanding of concepts — this holds steady or even improves with age (crystallised intelligence). - **Procedural memory:** Memory for how to do things (tying shoes, driving, making tea) — well preserved. - **Wisdom and experience:** The ability to use accumulated knowledge to make decisions and solve problems — often improves with age. - **Emotional regulation:** Older adults tend to have better emotional stability and positivity (the "positivity effect"). ### When to See a Doctor - **Memory loss that disrupts daily life** — forgetting important appointments, getting lost in familiar places, asking the same question repeatedly. - **Difficulty learning or remembering new information** beyond normal slowing. - **Changes in language** — difficulty following a conversation, finding common words, or understanding what is said. - **Disorientation** — losing track of time, place, or person (not knowing the day, month, or year). - **Personality or behaviour changes** — becoming withdrawn, irritable, anxious, or suspicious. - **Poor judgement** — making unsafe decisions, falling for scams, neglecting personal hygiene. - **Difficulty managing finances** — trouble paying bills, counting money, or making simple calculations. --- ## Eyes and Vision ### Normal Age-Related Changes - **Presbyopia (age-related farsightedness):** The lens of the eye becomes less flexible, making it harder to focus on close objects. This typically starts around age 40–45. - **Reduced pupil size and slower adaptation:** The pupils become smaller and react more slowly to changes in light. It takes longer to adjust when moving from light to dark (e.g., entering a cinema) or vice versa. - **Need for more light:** You need brighter light to read and see details clearly. - **Dry eyes:** Tear production decreases, leading to dry, gritty, or irritated eyes — especially common in women after menopause. - **Reduced colour discrimination:** Colours, especially blues and greens, may appear less vibrant. - **Floaters:** Small specks or strands in the vision are common and usually harmless — but a sudden increase can be serious. ### When to See a Doctor - **Sudden vision loss** in one or both eyes — emergency. - **Flashes of light or a sudden shower of new floaters** — may indicate retinal detachment. - **Blurred or distorted vision** — straight lines appearing wavy (may indicate macular degeneration). - **Loss of peripheral vision** — tunnel vision (may indicate glaucoma). - **Pain in the eye with redness and nausea** — may be acute angle-closure glaucoma (emergency). - **Difficulty seeing well enough to drive** — especially at night. - **Hazy or cloudy vision** — may be cataracts. - **Regular eye exams:** Recommended every 1–2 years from age 65. --- ## Ears and Hearing ### Normal Age-Related Changes - **Presbycusis (age-related hearing loss):** Gradual, progressive hearing loss, especially for **high-frequency sounds** (e.g., birds singing, children's voices, consonants like 's', 'f', 'th'). - **Difficulty hearing in noisy environments:** Background noise is harder to filter out, making conversations difficult in restaurants, parties, or group settings. - **Tinnitus:** Ringing, buzzing, or hissing in the ears is common (affects about 1 in 3 older adults). It is often mild and not bothersome. ### When to See a Doctor - **Hearing loss that affects daily life** — turning up the TV too loud, asking people to repeat themselves, avoiding social situations. - **Sudden hearing loss** in one ear — needs urgent assessment. - **Discharge from the ear** — may indicate infection. - **Pain in the ear** — not normal. - **Tinnitus that is new, one-sided, or pulsatile (throbbing in time with your heartbeat).** - **Hearing test:** Recommended if you or your family notice hearing difficulties. Hearing aids can significantly improve quality of life. --- ## Sleep ### Normal Age-Related Changes - **Lighter sleep:** You spend less time in deep sleep (slow-wave sleep) and more time in lighter stages of sleep. This means you wake more easily. - **More frequent night waking:** Waking 1–2 times per night to use the toilet is normal. - **Early waking:** You may wake up earlier and feel less able to sleep in. - **Reduced total sleep time:** You may need slightly less sleep than in earlier adulthood (though 7–8 hours is still the average). - **More time to fall asleep:** It may take 15–30 minutes to fall asleep — this is normal. ### When to See a Doctor - **Difficulty falling asleep** (taking more than 30–45 minutes most nights) or **staying asleep** (waking for long periods and unable to get back to sleep). - **Daytime sleepiness** that interferes with daily activities — falling asleep during meals, conversations, or while driving. - **Loud snoring with pauses in breathing** — may indicate sleep apnoea, which is common in older adults and increases the risk of heart disease, stroke, and cognitive decline. - **Restless legs or jerking movements** that disrupt sleep. - **Using sleep medications** (prescription or over-the-counter) regularly — these are not a long-term solution and can increase fall risk. --- ## Skin ### Normal Age-Related Changes - **Thinner skin:** Skin becomes thinner, more fragile, and less elastic. It bruises more easily. - **Dry skin:** Oil glands produce less oil, leading to dry, itchy skin. This is worse in winter and with frequent hot showers. - **Age spots (lentigines):** Flat, brown spots on sun-exposed areas (face, hands, arms). - **Wrinkles** are a normal part of ageing, caused by cumulative sun exposure, genetics, and loss of collagen. - **Slower wound healing:** Cuts and scrapes take longer to heal. ### When to See a Doctor - **A mole or spot that changes** in size, shape, colour, texture, or that bleeds — check for skin cancer (especially basal cell carcinoma, squamous cell carcinoma, or melanoma). - **A sore that does not heal** within 4 weeks. - **Unexplained rash or itch** that is persistent. - **Skin infections** — redness, swelling, warmth, or pus. --- ## General Advice for Healthy Ageing - **Stay physically active** — aim for at least 30 minutes of moderate activity most days. - **Eat well** — balanced diet with plenty of vegetables, fruit, lean protein, whole grains, and calcium-rich foods. - **Stay socially connected** — loneliness and social isolation are harmful to both physical and mental health. - **Keep your mind active** — reading, puzzles, learning new skills, and staying engaged in hobbies. - **Get regular health checks** — blood pressure, cholesterol, blood glucose, vision, hearing, dental, bone density. - **Review medications annually** — ask your GP or pharmacist if all medications are still needed. - **Get vaccinated** — annual flu, COVID-19 boosters, shingles vaccine, pneumococcal vaccine. - **Don't smoke** and **limit alcohol** to no more than one standard drink per day. - **Stay up to date with cancer screening** — breast, cervical, prostate, colorectal (bowel screening). - **Plan ahead** — consider advance care planning, enduring power of attorney, and will. --- ## Summary of Key Facts | Body System | Normal Ageing Changes | When to Seek Advice | | ------------------------ | ------------------------------------------------------------- | --------------------------------------------------------- | | **Cardiovascular** | Arteries stiffen, BP rises slightly, slower exercise recovery | Chest pain, shortness of breath, palpitations, fainting | | **Bones/joints/muscles** | Bone density loss, joint stiffness, muscle loss (sarcopenia) | Severe pain, swelling, falls, significant height loss | | **Digestive** | Slower digestion, constipation, reduced taste/smell | Weight loss, swallowing difficulty, blood in stools | | **Bladder/urinary** | Smaller bladder capacity, weaker stream, nocturia | Pain/burning, blood, incontinence, trouble starting | | **Memory/cognition** | Slower processing, working memory decline, tip-of-tongue | Daily disruption, disorientation, personality changes | | **Preserved cognition** | Semantic memory, procedural memory, wisdom | — | | **Eyes** | Presbyopia, dry eyes, need for more light, slower adaptation | Sudden vision loss, flashes, floaters, distortion | | **Ears** | High-frequency hearing loss, tinnitus (mild) | Sudden loss, discharge, pain, social withdrawal | | **Sleep** | Lighter sleep, more waking, earlier rising | Chronic insomnia, daytime sleepiness, snoring with pauses |