Menopause

Menopause is a natural biological transition that marks the end of a woman's reproductive years. It is defined as the point in time when a woman has gone 12 consecutive months without a menstrual period, occurring because the ovaries have gradually stopped releasing eggs and producing the hormones oestrogen and progesterone. In Singapore, the average age of menopause is around 49 to 50 years, though the transition can begin naturally anywhere from the late 30s to the early 60s.

Menopause is not a disease, but it is also far more than “the end of periods.” The hormonal shifts involved affect nearly every system in the body — from mood, sleep and skin, to bone density, cardiovascular health and long-term metabolic risk. Because these effects can begin years before periods actually stop, and continue for years afterwards, many women experience a wide range of physical and emotional changes without realising they are connected to the same underlying transition.

The Stages of Menopause

Menopause is not a single event but a gradual process that unfolds in three recognised stages. Understanding which stage you are in helps guide expectations around symptoms, screening and treatment.

1. Perimenopause: The transitional phase leading up to menopause, typically beginning 4 to 10 years beforehand as oestrogen levels start to fluctuate and decline. Periods often become irregular, and symptoms such as hot flushes, night sweats and mood changes may begin. Perimenopause can last several months to several years and ends with the final menstrual period.
2. Menopause: A single, defined point in time — reached once a woman has gone 12 consecutive months without a period. At this stage, the ovaries have essentially stopped releasing eggs and produce very little oestrogen and progesterone.
3. Postmenopause: The years following menopause, lasting for the rest of a woman's life. Many acute symptoms such as hot flushes gradually ease during this stage, although some women continue to experience them for a decade or more. Because oestrogen remains persistently low, the risk of osteoporosis and cardiovascular disease rises during postmenopause, making ongoing health monitoring important.
4. Premature or Early Menopause: Menopause that occurs before age 40 (premature) or between 40 and 45 (early), affecting a smaller proportion of women. It may occur naturally, or be brought on by surgery, chemotherapy, radiotherapy or certain autoimmune conditions. Because it results in a longer period of low oestrogen exposure, it carries a higher long-term risk of osteoporosis and heart disease, and often warrants closer specialist management.

Symptoms of Menopause?

Symptoms of menopause vary widely between women in type, number and severity — some women experience very few symptoms, while others find them significantly disruptive to daily life. Symptoms typically begin during perimenopause and may persist, to varying degrees, into postmenopause.

Physical Symptoms

• Irregular periods, or periods that become heavier, lighter, longer or shorter than usual
• Hot flushes — a sudden sensation of heat spreading across the face, neck and chest
• Night sweats and disrupted sleep
• Vaginal dryness, discomfort during intercourse, and reduced libido
• Frequent urination or increased urinary tract infections
• Dry skin, eyes or mouth, and thinning hair
• Mood swings
• Dry skin, eyes or mouth
• Breast tenderness, joint stiffness and muscle aches
• Weight gain, particularly around the abdomen, and a slower metabolism
• Headaches or migraines that change in pattern or frequency
• Palpitations, or an awareness of the heartbeat

Emotional and Cognitive Symptoms

• Mood swings, irritability, anxiety or low mood
• Difficulty concentrating or a sense of “brain fog”
• Reduced motivation, fatigue or low energy
• Loss of confidence or changes in self-image

It is worth emphasising that no two women experience menopause the same way, and the presence — or absence — of any particular symptom does not indicate whether menopause is progressing normally. Any symptom that is significantly affecting your quality of life is a reasonable and valid reason to seek medical advice, regardless of how “typical” it may seem.

What Causes Menopause

Menopause happens because the ovaries — the organs that store a woman's lifetime supply of eggs — gradually run out of viable eggs and reduce their production of oestrogen and progesterone. This is a natural, expected part of ageing for every woman who has ovaries, but the timing and experience of it can be influenced by several factors:

• Natural ageing: The most common cause. Egg supply and ovarian hormone production decline gradually with age, typically becoming significant from the mid-to-late 40s onward.
• Osteoporosis: During the first few years after menopause, you may lose bone density quickly. This increases your risk of osteoporosis.
• Medical treatments: Chemotherapy and pelvic radiotherapy can damage the ovaries and bring on menopause earlier than it would otherwise occur, sometimes temporarily and sometimes permanently.
• Primary ovarian insufficiency (POI): A condition in which the ovaries stop functioning normally before age 40, sometimes linked to genetic factors, autoimmune disease, or with no identifiable cause at all.

Whatever the underlying trigger, the physical experience of menopause — hot flushes, mood changes, sleep disruption and long-term health effects — arises from the same core mechanism: a decline in circulating oestrogen and its wide-reaching effects on the brain, bones, heart, skin and urogenital tissues.

Factors That Influence the Onset and Severity of Menopause

While menopause is a universal experience for women, several factors can affect when it begins and how significant the symptoms are:

• Family history: The age at which your mother or sisters went through menopause is often a reasonably strong predictor of your own timing.
• Smoking: Women who smoke tend to reach menopause one to two years earlier than non-smokers, and may experience more intense hot flushes.
• Reproductive and surgical history: Hysterectomy (even with the ovaries preserved), oophorectomy, and never having been pregnant are all associated with earlier menopause.
• Cancer treatment: Chemotherapy and radiotherapy to the pelvic region can bring on menopause earlier, sometimes suddenly.
• Autoimmune and chronic conditions: Certain autoimmune diseases, thyroid disorders and epilepsy have been linked to earlier onset of menopause.
• Body weight: Both very low and very high body weight can influence oestrogen levels and the timing or severity of symptoms.
• Ethnicity and genetics: Population studies suggest some variation in average age of onset and symptom profile across different ethnic groups, though individual variation remains the largest factor.

Long-Term Health Risks Associated with Menopause

The decline in oestrogen that defines menopause has effects that extend well beyond the immediate symptoms, raising the risk of several long-term health conditions if not actively managed:

• Cardiovascular disease: Oestrogen has a protective effect on the heart and blood vessels. After menopause, the risk of high blood pressure, unfavourable cholesterol levels, and heart disease rises to approach that of men of the same age.
• Osteoporosis: Bone density can decline rapidly in the first five to ten years after menopause, as oestrogen plays a key role in maintaining bone strength. This significantly increases the risk of fractures later in life.
• Genitourinary syndrome of menopause: Thinning and reduced elasticity of vaginal and urinary tract tissues can cause ongoing dryness, discomfort, recurrent urinary tract infections and urinary incontinence.
• Weight and metabolic changes: Many women experience a shift in fat distribution towards the abdomen and a slower metabolism, increasing the risk of insulin resistance and type 2 diabetes.
• Mood and cognitive health: Some women are more vulnerable to anxiety or depressive symptoms during the menopausal transition, and ongoing research is examining links between menopause and long-term cognitive health.

These risks can be meaningfully reduced through a combination of lifestyle measures, appropriate screening, and medical treatment if suitable, which is why proactive management of menopause matters well beyond symptom relief alone.

How Menopause Is Diagnosed

In most women over 45, menopause is diagnosed based on symptoms and menstrual history alone, without the need for blood tests. Investigations become more useful in specific situations — such as when symptoms occur before age 45, when the diagnosis is unclear, or when ruling out other conditions that mimic menopausal symptoms.

• Clinical History: The most effective treatment for hot flushes, night sweats and vaginal dryness, and also protective against bone loss. Available as tablets, patches, gels or sprays, with oestrogen given alone or combined with progesterone depending on individual circumstances. Suitability is assessed on a case-by-case basis, weighing benefits against individual risk factors.
• Follicle-Stimulating Hormone (FSH) and Oestrogen: Blood tests that measure hormone levels; FSH typically rises and oestrogen falls as ovarian function declines. Most useful in women under 45 or those with an unclear clinical picture, since hormone levels can fluctuate during perimenopause.
• Thyroid-Stimulating Hormone (TSH): A blood test to rule out thyroid conditions, which can cause symptoms — such as irregular periods, fatigue and mood changes — that closely resemble menopause.
• Bone Density Scan (DEXA): Recommended for women at higher risk of osteoporosis, including those with early or premature menopause, to establish a baseline and guide bone health management.
• Cardiovascular Risk Assessment: Blood pressure, cholesterol and blood glucose screening, since cardiovascular risk changes significantly around the menopausal transition.

Living Well Through Menopause: Practical Steps

Alongside any medical treatment, a number of everyday measures can help ease symptoms and protect long-term health during and after the menopausal transition:

• Manage hot flushes: Dress in layers and breathable fabrics, keep your environment cool, and identify and limit personal triggers such as caffeine, alcohol or spicy food.
• Prioritise sleep: Keep a consistent sleep schedule, limit caffeine and alcohol in the evening, and address night sweats early, as poor sleep can worsen mood and concentration.
• Strengthen your pelvic floor: Regular pelvic floor (Kegel) exercises can meaningfully improve urinary symptoms and support vaginal and bladder health.
• Eat for bone and heart health: A diet rich in calcium, vitamin D, fruits, vegetables and whole grains, with limited saturated fat, sodium and added sugar, supports both bone density and cardiovascular health.
• Stay physically active: Weight-bearing and resistance exercise helps preserve bone density and muscle mass, supports a healthy weight, and has been shown to improve mood and sleep quality.
• Avoid smoking and limit alcohol: Both can worsen hot flushes, accelerate bone loss, and increase cardiovascular and cancer risk.
• Look after your mental health: Stress-reduction techniques, staying socially connected, and seeking support for mood changes are just as important as managing physical symptoms.
• Keep up with screening: Continue with recommended cervical, breast and general health screening through and after menopause, as recommended by your doctor.