Hormone Therapy and Health Aging: Brain, Heart and Bone Health

Hormones play an essential role in maintaining health throughout life. Although hormone therapy is often associated with treating menopausal symptoms, the effects of hormones extend far beyond reproductive health.

In both men and women, age-related changes in hormone production can contribute to changes in energy, body composition, sexual function, bone health, and overall well-being. When hormone deficiency is present, appropriate evaluation and treatment may help improve symptoms and address specific health concerns.

Common symptoms associated with low testosterone in men, sometimes referred to asandropauseor colloquially asmanopause, include erectile dysfunction, reduced libido, fatigue, decreased stamina, changes in body composition, and mood changes.

Common symptoms of menopause include hot flashes, night sweats, sleep disturbances, irritability, vaginal dryness, reduced libido, and fatigue.

However,the importance of hormones extends beyond symptom management.Estrogen and testosterone play important roles in maintaining bone density, muscle mass, and other physiological functions. Researchers have also investigated the relationships between hormones and cardiovascular health, cognitive function, and neurodegenerative diseases.

Hormone therapy may be appropriate for certain patients with established hormone deficiencies or specific medical indications. Its benefits and risks depend on the hormones used, the patient's age and medical history, the formulation, and the timing and duration of treatment. Research into the potential benefits of hormone therapy for cardiovascular disease and cognitive decline remains an evolving field.

HORMONES AND BRAIN HEALTH: WHAT DOES THE RESEARCH SHOW?

The relationship between sex hormones and cognitive health has received considerable attention, particularly regarding estrogen, menopause, and Alzheimer's disease.

Estrogen receptors are present throughout the brain, and estrogen influences several processes involved in neuronal function. Researchers have investigated whether the decline in estrogen during menopause may contribute to changes in cognitive function and whether the timing of hormone therapy influences long-term neurological outcomes.

One review reported an association between prior hormone replacement therapy and a substantially lower incidence of Alzheimer's disease:

Read the published review on hormone therapy and Alzheimer's disease.

Related research has also explored the potential importance of when hormone therapy is initiated:

“Early HRT Use Linked to Reduced Risk of Alzheimer's Disease”

These findings are intriguing, but they require careful interpretation. An association between hormone use and a lower incidence of Alzheimer's disease does not establish that hormone therapy prevents the condition. Observational studies can be influenced by differences in health status, treatment selection, and other factors, while clinical trials have not established menopausal hormone therapy as a treatment for preventing dementia.

Nevertheless, understanding how hormonal changes interact with brain health remains an important area of research, particularly as scientists continue to investigate the relationship between the timing of menopause, estrogen exposure, and neurological aging.

ESTROGEN, TESTOSTERONE, AND BONE HEALTH

Bone health is another important consideration when evaluating age-related hormone changes.

Estrogen helps regulate bone remodeling, the continuous process through which old bone is removed and new bone is formed. Following menopause, declining estrogen levels accelerate bone loss and contribute to an increased risk of osteoporosis and fractures.

As described in a review of estrogen and bone health:

Read the published research on estrogen deficiency and postmenopausal bone loss.

This relationship helps explain why menopausal hormone therapy can be an important option for appropriately selected women. In addition to relieving menopausal symptoms, systemic hormone therapy can help prevent bone loss and reduce fracture risk while treatment continues. The decision to use it should account for the patient's age, time since menopause, medical history, and individual risks and benefits.

Testosterone also plays an important role in male skeletal health. Low testosterone can be associated with reduced bone mineral density, decreased muscle mass, and changes in body composition that may affect fall and fracture risk.

A review examining testosterone deficiency and bone health in men reported a strong association between testosterone deficiency and bone loss:

Read the research on testosterone deficiency and bone health.

Research has also examined the role of sex hormones in maintaining bone mineral density:

Read the review on estrogen, testosterone, and bone mineral density.

These findings highlight the importance of evaluating hormone status when assessing bone health. However, testosterone replacement is not a substitute for standard osteoporosis evaluation or treatment, and improvements in bone density do not automatically translate into fewer fractures. The appropriate treatment depends on the patient's clinical circumstances and underlying risks.

TESTOSTERONE AND CARDIOVASCULAR HEALTH

Testosterone has effects beyond sexual function. It influences red blood cell production, body composition, muscle maintenance, and several metabolic processes. Researchers have also investigated the relationship between testosterone deficiency and cardiovascular disease.

One published report examining testosterone supplementation in men with heart disease described findings suggesting a potential reduction in heart attack risk:

Read the report on testosterone supplementation and heart attack risk.

It is important to distinguish these historical findings from current clinical evidence. Early studies and observational reports generated interest in testosterone's potential cardiovascular effects, but they do not establish that testosterone therapy prevents heart attacks.

More recent evidence, including the TRAVERSE randomized clinical trial, found that testosterone therapy did not increase the incidence of major adverse cardiovascular events compared with placebo in appropriately selected men with hypogonadism and cardiovascular disease or elevated cardiovascular risk. However, certain other adverse events occurred more frequently in the testosterone group, and the findings do not mean testosterone is appropriate for everyone.

Testosterone therapy should therefore be considered for men with compatible symptoms and consistently low testosterone levels, not prescribed solely to prevent cardiovascular disease. Appropriate monitoring is essential.

REASSESSING THE RISKS AND BENEFITS OF MENOPAUSAL HORMONE THERAPY

For many years, concerns about the risks of hormone replacement therapy led some women to avoid or discontinue treatment. Much of the discussion followed the publication of the Women's Health Initiative (WHI) findings, which identified important risks associated with specific hormone regimens in the populations studied.

Subsequent analysis has emphasized that the risks and benefits of menopausal hormone therapy are not identical for all women. Age, time since menopause, the specific hormones used, the route of administration, and individual medical history all influence the treatment decision.

A 2017 article discussing the interpretation of the WHI findings captured this continuing debate:

Read the CMAJ report on the continuing debate over the WHI findings.

The article reflects an ongoing debate about how the original findings were communicated and interpreted. It should not be taken to mean that the WHI results were invalid or that hormone therapy is universally safe.

Current evidence supports a more individualized approach. For healthy women younger than 60 or within 10 years of menopause onset who have no contraindications, the benefit-risk balance of menopausal hormone therapy is generally more favorable when treatment is indicated for bothersome menopausal symptoms or prevention of bone loss. Risks may differ for women who initiate therapy later or have particular medical risk factors.

Hormone therapy is not recommended for every woman, nor is it routinely prescribed solely to prevent cardiovascular disease or dementia. The goal is to identify the women most likely to benefit while appropriately assessing potential risks.

THE RISE AND FALL OF HORMONE PRODUCTION: UNDERSTANDING AGING

As we age, our bodies undergo changes in cellular repair, regeneration, metabolism, and hormone production. Some decline in function is a natural part of aging, but the rate and extent of these changes vary considerably between individuals.

Genetics, nutrition, physical activity, sleep, stress, environmental exposures, and chronic disease can all influence the aging process. Hormonal changes are another important consideration.

This raises two important questions:

What is your current hormone status, and what can you do to support your health as you age?

For some individuals, the first steps may involve improving nutrition, exercising for 20–30 minutes daily as tolerated, prioritizing restorative sleep, and addressing underlying health conditions. For others, a clinical evaluation may identify a hormone deficiency that warrants further investigation and consideration of treatment.

The goal is not simply to replace hormones because levels have changed with age. Rather, it is to understand how hormonal status relates to symptoms, overall health, and individual treatment goals.

There is a time when the body may respond well to supportive measures, and there are circumstances when replacing a deficient hormone may be appropriate.

WHAT SHOULD YOU DO NEXT?

Hormones are an important component of overall health, and hormone therapy should not be dismissed outright because of generalized concerns about cancer or other adverse effects. Equally, it is important to recognize that hormone therapy is not risk-free and is not appropriate for everyone.

The best approach begins with a comprehensive evaluation of your symptoms, medical history, hormone status when clinically indicated, and individual risk factors. Treatment decisions should be based on established indications, available evidence, and a careful discussion of potential benefits and risks.

If you are considering hormone therapy, seek a qualified healthcare professional with appropriate training and experience in hormone management. Your provider should be able to explain the available treatment options, select appropriate laboratory testing when needed, establish a monitoring plan, and work with you to develop an individualized approach to care.

At Valley Integrative Health, our goal is to help patients better understand their health and explore appropriate options for maintaining and optimizing well-being throughout life.

CONTACT VALLEY INTEGRATIVE HEALTH TODAY

Devin Wilson, ND, is a licensed Naturopathic Doctor and owner of Valley Integrative Health, LLC, in Ashland, Oregon. With over a decade of clinical experience, including two years of training with a physician affiliated with Johns Hopkins and Yale, Dr. Wilson integrates naturopathic and conventional medical approaches with selected advanced therapies. He has completed advanced training in anti-aging medicine and bioidentical hormone therapy through the American Academy of Anti-Aging Medicine (A4M). Dr. Wilson has also previously worked at a specialized stem cell and anti-aging clinic. His goal is to help patients re-establish, maintain, and optimize their health through an individualized, patient-centered approach.