Menopause is a natural part of life, yet for many women the changes come as a surprise.
Suddenly the body no longer works quite the way it used to. Sleep quality declines. Weight becomes harder to influence even though diet and exercise are unchanged. Energy does not last as long. Mood swings more than usual. Memory feels less sharp and recovery takes longer. Many women wonder what is happening. The answer is that the body is going through one of the largest biological changes since puberty.
Menopause is not only about menstruation and fertility. As levels of estrogen and progesterone change, almost every organ system in the body is affected. Muscles, the skeleton, the brain, the heart, blood vessels, metabolism, skin and mucous membranes are all affected to varying degrees.
At the same time, menopause is not something to fear. On the contrary, this period can be seen as an opportunity to invest in your future health. Research shows that the choices we make in the years around menopause, meaning the point one year after your final period, can influence the risk of osteoporosis, cardiovascular disease, metabolic ill health, loss of function and reduced quality of life decades later. More recent research also suggests that menopause coincides with biological changes that may influence biological aging, which makes this period particularly important from a preventive health perspective.11
The aim of this guide is to help you understand what is happening in the body, why it is happening and, above all, what you can do yourself to feel as well as possible through this important phase of life.
What is the menopause transition?
The climacteric, the period most people refer to simply as menopause, is the phase when the ovaries gradually reduce their production of sex hormones. The change does not happen overnight. In most women the process unfolds over several years before menstruation stops completely.
The phase before the final menstrual period is called perimenopause. During this phase hormone levels begin to fluctuate more than before. Periods can become irregular and many women experience their first symptoms, such as hot flashes, sleep problems, mood swings or brain fog.
Menopause is defined as the point in time when twelve months have passed since the final menstrual period. After that comes postmenopause, which covers the rest of life. In Sweden, menopause occurs on average at around 51 years of age, although there is wide individual variation.
It is also important to understand that hormones do not simply decline in a steady line. During perimenopause, estrogen levels can swing sharply up and down. It is often these hormonal roller-coasters that lie behind many of the complaints women experience during the transition years.1
Hormones affect the whole body
Most people think of estrogen as a hormone that governs fertility and menstruation. In reality, estrogen acts more like a communication system for the entire body. Estrogen receptors are found in most of the body's organs and tissues, so when hormone levels change, many functions are affected at the same time. This is why menopause can produce a combination of symptoms that, at first glance, do not seem to belong together:
- Hot flashes.
- Sleep disturbances.
- Brain fog.
- Mood changes.
- Reduced energy.
- Joint pain.
- Dry mucous membranes.
- Changes in body composition.
All of these symptoms can be different expressions of the same biological process.1 For some women the changes are relatively mild. For others, they affect work, relationships and quality of life significantly.
Muscle is your most important organ for healthy aging
When we think about muscle, many people picture strength or appearance. From a health perspective, muscle is far more important than that. Muscle is the body's largest organ for metabolism. It helps regulate blood sugar, supports the skeleton, improves balance and reduces the risk of falls later in life.
After menopause, many women gradually lose both muscle mass and strength. The change often happens slowly and is therefore hard to notice in everyday life. Many women first notice that recovery becomes slower, or that the body no longer responds to training the way it used to.3
The good news is that muscle is one of the body's most trainable organs. Regular strength training is therefore one of the most effective investments you can make in your future health. Two to three strength sessions per week focused on the body's large muscle groups produce significant effects on strength, metabolism, bone density and quality of life, even in older individuals.15
For the best results, the body also needs enough protein. A useful target for many women is to aim for around 25 to 30 grams of protein per meal and to spread protein intake evenly across the day.
Think of your muscles as your biological pension savings. The more you invest today, the greater the return later in life.
The skeleton is the silent organ
Unlike muscles and joints, the skeleton rarely gives any clear warning signals. Many women therefore do not notice that bone density is declining until the first fracture occurs.
Estrogen plays an important role in preserving the strength of the skeleton. When hormone levels fall, the breakdown of bone tissue increases and bone density gradually begins to decline.4 The fastest bone loss often occurs during the first years after menopause.
This does not mean that osteoporosis is inevitable. On the contrary, there is a great deal you can influence. Strength training, regular loading of the skeleton, sufficient protein intake, optimal vitamin D levels and hormone therapy during menopause are some of the most important factors for preserving a strong skeleton.
Your bone density during menopause is also shaped by the peak bone density you reached in your younger years, which depends partly on physical activity and diet. Because bone density cannot be judged from the outside, it can be valuable to have a bone density scan with DEXA around the time of menopause, particularly if you have a family history of osteoporosis or other risk factors, for example being underweight or undergoing long-term corticosteroid treatment.
The effect on the heart and blood vessels
Before menopause, women generally have a lower risk of cardiovascular disease than men of the same age. After menopause, this difference gradually narrows. Blood pressure can rise. Blood lipids change. Insulin sensitivity declines and fat is more often stored around the abdomen rather than around the hips and thighs.5
This does not mean that heart disease is inevitable. On the contrary, this is a period when preventive measures can have a very large effect. Monitoring blood pressure, blood sugar and blood lipids including ApoB, as well as inflammatory markers, is important. It allows changes to be detected early, long before they lead to a heart attack, stroke or other serious cardiovascular events.
Regular physical activity, strength training, sleep optimization, stress management and a nutrient-dense diet are some of the most important tools for protecting the heart during and after menopause.
The effect on the brain
Many women describe feeling more forgetful, less focused or experiencing a sense of mental sluggishness during menopause. This is often called brain fog. For many women these changes can be frustrating, especially for those who were previously used to juggling many things at once.
Research shows that the hormonal changes affect the brain's energy supply and signaling. Studies have also shown that the brain undergoes measurable changes in structure, networks and energy metabolism during the transition to menopause.6,7,8
For the great majority of women, the difficult symptoms are temporary. At the same time, the brain is strongly influenced by sleep, stress, physical activity and recovery. Improvements in these areas therefore often lead to noticeable improvements in concentration, memory and mental energy as well.
Sleep is the foundation of all recovery
Sleep is one of the most important factors for long-term health. During sleep the brain recovers, the immune system is strengthened and the body repairs itself. Sleep is not a luxury. It is a biological necessity.
Unfortunately, sleep problems are one of the most common symptoms during menopause. For some women it is hot flashes and night sweats. For others, the brain simply has a harder time settling down. The result is often poorer energy, increased hunger, lower stress tolerance and impaired concentration.9,10
Some of the most effective measures are:
- Regular sleep and wake times.
- Daylight early in the morning.
- Limited caffeine in the afternoon.
- A cool bedroom.
- Regular physical activity.
- Hormone therapy with estrogen and progesterone.
Metabolism and weight
Many women find that they suddenly gain weight even though they eat and exercise the same way as before. This is not imagination. When estrogen levels fall, the body's metabolism changes. Fat is more often stored around the abdomen, muscle mass decreases and insulin sensitivity declines.2,10
This means the body responds differently to the same lifestyle. The solution, however, is rarely to eat less and exercise more. Instead, it is about prioritizing the factors that have the greatest effect on metabolism:
- Strength training.
- Enough protein, around 30 grams per meal.
- Sleep, at least 7 hours of quality sleep per night.
- Stress management.
When these factors are working well, it becomes considerably easier to preserve weight, muscle mass and energy levels.
What does the research say about hormone therapy during menopause?
For many years, hormone therapy was a controversial subject following the publication of the American WHI study in 2002. Today, most experts in hormone therapy agree that few things have done more harm to women's health over the past 20 years than the misinterpretations of that study's results, both in the press and among the responsible researchers.
After re-analysis of the study data, combined with evidence from a range of other studies, hormone therapy has seen a resurgence. Modern research shows that hormone therapy is a safe and effective option for most women with menopausal symptoms when treatment is started at the right time and after an individual medical assessment.12,13,14 Hormone therapy is the most effective treatment for hot flashes and night sweats and can also help preserve bone density. When treatment is started at the right time, research suggests it may also have beneficial effects on long-term cardiovascular and brain health in some women.12,13,14
That said, hormone therapy during menopause is not the only path to staying healthy and vital into older age. Lifestyle factors play an enormous role, and ultimately it is a personal choice.
What matters is that decisions are made on the basis of knowledge and truth, not fear, together with a doctor who understands menopause and modern hormone therapy.
What can you do yourself?
There is a great deal you can do yourself to create the best possible conditions for health during and after menopause.
- Do heavy strength training two to three times per week.
- Prioritize strength training over cardio alone. Both are important, but strength training matters in particular for muscle mass, bone density and metabolism during and after menopause.
- Prioritize sleep and recovery.
- Eat enough protein at every meal.
- Be physically active every day. Even a few minutes can make a difference.
- Monitor important health markers such as blood pressure, blood sugar, blood lipids and inflammatory markers.
- Work actively to reduce whatever causes you stress.
- Discuss hormone therapy with a doctor who has the expertise and takes the time to understand your symptoms.
Small changes carried out consistently over time often produce greater effects than short, intense efforts.
Summary
Menopause is not a disease. It is a natural biological transition that marks the beginning of a new phase of life. At the same time, this period involves significant changes in the body's hormonal environment, which affects muscles, the skeleton, the brain, the heart, metabolism and sleep.
Knowledge makes it possible to act in time. With the right lifestyle, regular follow-up and individually tailored treatment, most women can not only feel well through menopause but also build stronger conditions for a long, active and healthy life.
- Davis SR, Lambrinoudaki I, Lumsden M, et al. Menopause. Nat Rev Dis Primers. 2015;1:15004. PubMed
- Greendale GA, Sternfeld B, Huang M, et al. Changes in body composition and weight during the menopause transition. JCI Insight. 2019;4(5):e124865. PubMed
- Maltais ML, Desroches J, Dionne IJ. Changes in muscle mass and strength after menopause. J Musculoskelet Neuronal Interact. 2009;9(4):186–197. PubMed
- Compston JE, McClung MR, Leslie WD. Osteoporosis. Lancet. 2019;393(10169):364–376. PubMed
- Maas AHEM, Rosano G, Cifkova R, et al. Cardiovascular health after menopause transition, pregnancy disorders, and other gynaecologic conditions: a consensus document. Eur Heart J. 2021;42(10):967–984. PubMed
- Brinton RD, Yao J, Yin F, Mack WJ, Cadenas E. Perimenopause as a neurological transition state. Nat Rev Endocrinol. 2015;11(7):393–405. PubMed
- Mosconi L, Berti V, Quinn C, et al. Sex differences in Alzheimer risk: Brain imaging of endocrine vs chronologic aging. Neurology. 2017;89(13):1382–1390. PubMed
- Mosconi L, Berti V, Dyke J, et al. Menopause impacts human brain structure, connectivity, energy metabolism, and amyloid-beta deposition. Sci Rep. 2021;11(1):10867. PubMed
- Joffe H, Crawford S, Economou N, et al. A gonadotropin-releasing hormone agonist model demonstrates that nocturnal hot flashes interrupt objective sleep. Sleep. 2013;36(12):1977–1985. PubMed
- Mauvais-Jarvis F, Clegg DJ, Hevener AL. The role of estrogens in control of energy balance and glucose homeostasis. Endocr Rev. 2013;34(3):309–338. PubMed
- Levine ME, Lu AT, Chen BH, et al. Menopause accelerates biological aging. Proc Natl Acad Sci USA. 2016;113(33):9327–9332. PubMed
- Manson JE, Aragaki AK, Rossouw JE, et al. Menopausal hormone therapy and long-term all-cause and cause-specific mortality: The Women's Health Initiative randomized trials. JAMA. 2017;318(10):927–938. PubMed
- Hodis HN, Mack WJ. The timing hypothesis and hormone replacement therapy: a paradigm shift in the primary prevention of coronary heart disease in women. J Am Geriatr Soc. 2013;61(6):1011–1018. PubMed
- The 2022 Hormone Therapy Position Statement of The North American Menopause Society Advisory Panel. Menopause. 2022;29(7):767–794. PubMed
- Beckwée D, Delaere A, Aelbrecht S, et al. Exercise interventions for the prevention and treatment of sarcopenia. A systematic umbrella review. J Nutr Health Aging. 2019;23(6):494–502. PubMed