Menopause without obvious symptoms: is it normal or not?

Many women experience menopause without significant hot flashes, night sweats, or other typical complaints. This is considered normal and reflects individual characteristics of neuroendocrine regulation, sensitivity to changes in estrogen levels, and the width of the thermoregulatory "comfort zone." The absence of significant sensations does not mean that age-related changes are not occurring in the body. Menopause is a biological milestone, and symptoms can range from none to severe. [1]

According to large cohort studies, vasomotor symptoms are reported by approximately 60-80% of women, while 20-40% experience minimal discomfort. The proportion of women without hot flashes varies depending on the stage of the menopause transition, body weight, smoking status, and psychoemotional factors. Variability between studies is explained by survey methodology, ethnic composition, and observation time. [2]

It's important to understand that "asymptomatic" often means the absence of complaints that interfere with daily life. Hidden changes, such as accelerated bone mineral loss in late premenopause and early postmenopause, occur regardless of the presence of hot flashes. Therefore, prevention and age-appropriate screening remain relevant even in the presence of complete subjective well-being. [3]

Menopause is a time to "reassess your health plans": managing cardiovascular risk factors, strengthening bone mass, discussing contraception during menopause, and refining your screening schedule. All of this is equally important whether you have symptoms or not. [4]

Definitions and diagnostics without relying on complaints

Menopause is a date established retrospectively after 12 months of absence of menstruation without any other cause. The transition to menopause includes early and late perimenopause, when cycles become irregular and then cease. For diagnosis in women over 45 years of age, clinical criteria based on the menstrual calendar are usually sufficient; laboratory tests are not required. [5]

Follicle-stimulating hormone, estradiol, and especially anti-Müllerian hormone tests are not recommended for routine verification of menopause in women over 45 years of age due to significant intra- and inter-cycle variability. Exceptions include atypical cases and suspected premature ovarian failure, when laboratory testing is performed on a targeted basis. [6]

If a woman is taking combined hormonal contraception or a progestogen-only method, menstrual markers of menopause may be masked. In such situations, the woman's age, duration of amenorrhea, type of contraception, and individual risk factors are taken into account; if necessary, gradual withdrawal and observation are carried out. The decision is made by a physician, taking into account guidelines on contraception for women over 40. [7]

A special case is premature ovarian failure before age 40. Here, hormonal therapy is indicated until the average age of natural menopause to reduce long-term risks, even if there are no complaints. This is fundamentally different from the care of a healthy woman at the usual age of menopause without symptoms. [8]

Epidemiology of "silent" menopause

The frequency of absence of vasomotor symptoms varies at different stages of the transition to menopause. Hot flashes are less common in early perimenopause, then peak in late perimenopause and the first years after the last menstrual period. Even during the period of maximum risk, the proportion of women without pronounced symptoms remains significant. [9]

The likelihood of hot flashes is influenced by body weight, smoking, and psycho-emotional factors. Being overweight and smoking increase the risk of frequent and severe hot flashes, while quitting smoking and controlling weight reduce the likelihood of symptoms. These factors partially explain why some women experience a "quiet" menopause. [10]

Cultural and behavioral differences are also important: sleep habits, stress levels, physical activity, and diet are associated with the severity of complaints in observational studies. However, even with favorable behavior, symptoms may not occur simply due to individual neurovegetative sensitivity. [11]

The absence of hot flashes does not automatically protect against age-related adverse outcomes. Accelerated bone loss in late perimenopause begins approximately 1 year before the last menstrual period and continues for about 3 years, after which it slows. This is a universal process that occurs regardless of subjective sensations. [12]

Why there may be no symptoms

The neuroendocrine theory explains hot flashes by a narrowing of the "thermoneutral" zone of the hypothalamus due to decreased estrogen levels and the activity of neurons producing kisspeptin, neurokinin B, and dynorphin. If the individual's thermoregulatory zone remains wider, and the vasodilation and sweating thresholds are less sensitive, symptoms may not occur. [13]

Metabolic and behavioral factors modify the risk. High body weight, smoking, and severe somatic anxiety increase the likelihood of hot flashes, while physical activity and smoking cessation reduce it. This is partly due to the effect on vascular reactivity and central thermoregulatory mechanisms. [14]

Genetic differences and age at last menstruation also influence the symptom phenotype. In observational studies, hot flashes vary in duration and severity, and in some women, they remain at a level of "near zero" throughout the entire observation period. This supports the existence of a persistent asymptomatic variant. [15]

It's important to distinguish between the absence of symptoms and "tolerance." A woman may not complain if they are rare and don't interfere with her life, but preventative medical care is still indicated. Individual counseling about the risks of cardiovascular disease and osteoporosis is recommended for all middle-aged women. [16]

What could be dangerous about the “asymptomatic” variant?

Even in the complete absence of complaints, accelerated bone resorption occurs: in late premenopause, the average rate of loss of mineral density in the lumbar spine reaches approximately 1.6-2.3% per year, in the hip region - about 1.0% per year. The early years after the last menstruation are most vulnerable. [17]

With the transition to menopause, the cardiometabolic profile changes: the likelihood of arterial hypertension, lipid metabolism disorders, and insulin resistance increases. This is a reason to systematically review your lifestyle and monitoring plan, even if you have never experienced hot flashes. [18]

Genitourinary syndrome of menopause may develop gradually and not cause any discomfort for a long time, but over time it leads to dryness, discomfort, and recurrent urinary tract infections. Topical estrogens are prescribed as symptoms appear, regardless of the presence of hot flashes. [19]

A separate risk group includes women with premature ovarian failure. In this case, the absence of complaints does not negate the need for replacement therapy until the age of natural menopause to prevent fractures and reduce cardiometabolic risks. [20]

When to Call the Doctor: Red Flags

A doctor should be consulted if abnormal uterine bleeding occurs after a long pause, pelvic pain, sudden weight loss, or persistent fatigue of unknown origin occurs. These symptoms require the exclusion of organic pathology. [21]

"Red flags" also include a fracture with minimal trauma, decreased height, severe back pain, or postural deformities—possible manifestations of osteoporosis and vertebral compression fractures. Even in the absence of hot flashes, this is a compelling reason to evaluate bone mineral density. [22]

It's worth discussing a routine schedule of preventive screenings: blood pressure measurement, lipid profile, blood glucose, mammography based on age and risk factors, and colorectal cancer screening. Specific intervals depend on national projects and personal risk. [23]

In cases of prolonged amenorrhea up to 40 years of age, repeated milk leakage from the mammary glands, severe hot flashes in combination with weight loss or symptoms of hyperthyroidism, a targeted assessment of hormonal status and exclusion of secondary causes of amenorrhea is required. [24]

Contraception during the transition period without symptoms

Fertility is maintained until 12 months have passed since the last menstrual period. Women under 50 are advised to continue contraception for 24 months after their last menstrual period, and women 50 and older are advised to continue contraception for 12 months. If in doubt, consider your age and the method of contraception. [25]

Most women can stop using contraception at age 55, as the chances of conceiving spontaneously after this age are extremely low. This guideline applies regardless of residual irregular bleeding, but it's best to discuss the decision with your doctor. [26]

A copper intrauterine system inserted after age 40 can be used until menopause. A levonorgestrel-containing system inserted after age 45 is often used until age 55, taking individual factors into account. When using estrogen-containing contraceptive regimens, bleeding regularity does not reflect the onset of menopause. [27]

Menopausal hormone therapy is not a method of contraception. If contraception is needed and symptoms are treated, the physician will select compatible regimens, including topical estrogens for urogenital symptoms as indicated. [28]

Screening and prevention: what's important even without complaints

Even during a "silent" menopause, bone risk should be routinely assessed. Osteoporosis screening is recommended for all women 65 years and older, as well as for women under 65 with clinically assessed elevated risk. The choice of method and the interval for repeat testing are determined individually. [29]

Strength and balance training, adequate protein and calcium in the diet, and sufficient vitamin D levels according to national recommendations are helpful in reducing the risk of fractures. Preventive calcium and vitamin D supplementation, without deficiency, does not replace exercise training and is not a universal measure for fracture prevention. [30]

A cardiovascular assessment includes blood pressure, lipid profile, body weight, waist circumference, and behavioral factors. Menopause is a convenient entry point for lifestyle changes: smoking cessation, a diet rich in whole foods, and regular physical activity. [31]

Age-specific cancer screenings remain relevant: mammograms every two years from 40 to 74 years for those with average risk, as well as colorectal cancer screening from 45 to 75 years using a selected method according to local guidelines. For those with high risk, the intervals and starting age are adjusted at the physician's discretion. [32]

Menopausal hormone therapy in the absence of symptoms

In the absence of complaints, initiating systemic menopausal hormone therapy for the prevention of chronic diseases is not recommended. According to the Prevention Expert Group, the use of estrogen with progestin or estrogen alone in women after hysterectomy does not provide a net preventive benefit at the population level. [33]

A different rule applies to premature ovarian failure. Here, hormone replacement therapy is indicated until the average age of natural menopause, even if there are no symptoms, as it reduces the risk of fractures and adverse cardiovascular outcomes. [34]

If urogenital symptoms develop over time, topical estrogens are indicated to reduce dryness and dysuria. Topical forms are not considered a prophylactic against systemic diseases, but they are effective for localized manifestations and can be used long-term under medical supervision. [35]

In the case of severe vasomotor complaints, systemic therapy remains the most effective method, especially when initiated within the first 10 years after the last menstruation in healthy women without contraindications. In the absence of complaints, there is no proven preventive role for systemic therapy. [36]

Table 1. Terms and practical criteria

Term	Working definition	What is it for?
Premenopause	Regular cycles before irregularity began	Basic reference point
Transition to menopause	The appearance of irregularity in the cycle, then a pause	Period of maximum variability
Menopause	12 months without menstruation for no other reason	The date is set retrospectively
Early postmenopause	The first years after the last menstruation	Peak bone loss and parts of metabolic shifts
Premature ovarian failure	Loss of function before age 40	Special algorithm and replacement therapy
Source: Guidelines for the management of menopause and premature ovarian failure. [37]

Table 2. How often do symptoms occur?

Indicator	Grade
Women with hot flashes at different times	60-80%
Women without noticeable hot flashes	20-40%
Peak frequency of tides	Late premenopause and early postmenopause
The influence of body weight and smoking	Increases the risk of severe hot flashes
The role of anxiety	Associated with a higher frequency of symptoms
Source: data from cohort studies and reviews. [38]

Table 3. Red flags during menopause

Situation	What to do
Bleeding after a long pause	See a doctor immediately
Fracture with minimal trauma	Bone mineral density assessment
Severe back pain, loss of height	Exclude compression fractures
Long-term amenorrhea up to 40 years	Rule out premature ovarian failure
Severe systemic symptoms without a clear cause	Search for secondary endocrine disorders
Based on clinical guidelines. [39]

Table 4. Basic prevention for “silent” menopause

Direction	Concrete steps
Bones	Osteoporosis screening by age and risk, strength and balance training
Cardiovascular health	Control of blood pressure, lipids, glucose, smoking cessation
Nutrition	Adequate protein, calcium from food, vitamin D as needed
Urogenital health	Local estrogens for symptoms, hygiene and infection prevention
Preventive administration of hormones	Not indicated for the prevention of chronic diseases without symptoms
Sources: Menopause, Osteoporosis, and Prevention Guidelines. [40]

Table 5. Contraception during the transition period

Age and situation	When to stop
Under 50 years old	24 months after the last menstruation
50 years and older	12 months after the last menstruation
55 years and older	Contraception is usually not required.
Intrauterine methods after 40-45 years	Extended operation is possible depending on the device type
Menopausal hormone therapy	It is not a contraceptive
Based on guidelines for contraception in women over 40 years of age.[41]

Table 6. Age-specific screenings for average risk

Screening	Age	Interval
Mammography	40-74	Every 2 years
Colorectal cancer	45-75	According to the selected methodology in accordance with local regulations
Osteoporosis	65+ and younger with increased risk	According to clinical assessment and method
Sources: Updates on mammography, colorectal cancer, and osteoporosis. [42]

Table 7. Bone loss around menopause

Period	Average rate of mineral density decline
Late perimenopause	About 1.6-2.3% per year in the spine, about 1.0% in the hip
The first years after the last menstruation	Accelerated loss persists, then slows down
Long postmenopausal period	Low but continuing rate of decline
The impact of physical activity	Strength and balance training reduce the risk of falls and fractures
The role of systemic hormonal therapy	It is not prescribed prophylactically without symptoms, with the exception of premature ovarian failure.
Source: observational and clinical data. [43]

Frequently asked questions about "silent" menopause

If there are no hot flashes, should anything be done?
Yes. Prevention and routine screening based on age and risk are necessary. Blood pressure, lipids, glucose, bone risk are checked, and cancer screenings are scheduled. This applies to all women, regardless of symptoms. [44]

Is systemic hormone therapy necessary if there are no complaints?
No, systemic hormones are not recommended for the primary prevention of chronic diseases. The exception is premature ovarian failure, where replacement therapy is indicated until the average age of natural menopause. [45]

What about contraception?
Continue until the age-appropriate criteria for menopause are met. Under 50, continue for 24 months after the last menstrual period; 50 and older, continue for 12 months. Contraception is usually stopped at age 55. Menopausal hormone therapy does not protect against pregnancy. [46]

Is it possible to "overlook" urogenital symptoms forever?
Some women experience minimal or no urogenital symptoms. If dryness or dysuria develops over time, topical estrogens can help, and they can be used long-term under close supervision. [47]

How to strengthen bones and the heart without medication?
Regular strength and balance training, a diet with sufficient protein and calcium, maintaining vitamin D at target levels, weight management, and quitting smoking. Deficiency-free preventative nutritional supplements are not a substitute for exercise. [48]

Key findings

1. "Menopause without symptoms" is a normal option. However, prevention and age-appropriate screening are mandatory for everyone. [49]
2. Systemic hormonal therapy should not be initiated for prophylaxis without complaints. The exception is premature ovarian failure. [50]
3. Contraception is required until the time criteria are met or until age 55. [51]
4. Bones lose minerals even in complete subjective health, so osteoporosis risk assessment and exercise are essential. [52]
5. Screening for cancer and cardiovascular risk remains a priority in all menopausal settings. [53]