Your health likely becomes an even bigger priority as you move through life. You want the strength, clarity, energy, and resilience to handle everything—from work and family to staying active and enjoying your personal time. But as a woman, when you enter your 40s, your body begins to change. Shifts in hormones, muscle metabolism, bone health, and recovery can make certain nutrients more important than they were just a decade earlier.

Muscle tone becomes harder to maintain. Hormones fluctuate as your body gradually transitions toward menopause. These changes are normal, but they can affect how your body absorbs and uses nutrients.

According to the National Institute on Aging, metabolic and hormonal changes in midlife can alter nutritional needs and influence bone health, muscle mass, and cardiovascular risk.

Women entering their 40s and 50s often experience metabolic and hormonal shifts that influence bone health, muscle mass, and cardiovascular risk. — Dr. Stephanie Faubion, M.D., the director for the Center for Women's Health at the Mayo Clinic, medical director for The Menopause Society, and member of the WeightWatchers Scientific Advisory Board.

A balanced diet remains the foundation of good health. However, I see in my profession that perimenopause and lifestyle changes can make it harder for some women to maintain optimal nutrient levels through diet alone.

How Perimenopause Affects Nutrition

Perimenopause, the transitional stage before menopause, can begin in the early to mid-40s. Hormone fluctuations during this time may affect metabolism, mood, sleep, and bone density.

Estrogen plays a major role in many body systems. As levels begin to decline, several health risks may gradually increase, including:

• Bone density loss
• Changes in body composition
• Increased inflammation
• Sleep disruption
• Mood changes
• Greater risk of cardiovascular disease

Nutrition becomes increasingly important during perimenopause because hormonal changes can influence metabolism, bone health, and energy levels, — Dr. Pelin Batur, women's health specialist at the Cleveland Clinic, speaking on the Cleveland Clinic Health Essentials Podcast.

Because of these shifts, some women begin paying closer attention to specific nutrients that support healthy aging.

Do Supplements Matter for Women After 40?

Women in their 40s often balance careers, families, fitness routines, and daily responsibilities. Maintaining stamina, mental clarity, and recovery becomes increasingly important during this stage of life.

At the same time, many women begin to experience these perimenopausal changes, which may influence nutritional needs. These changes can include:

• Hormonal fluctuations affect bone density.
• Decline in muscle mass and weight
• Decreased nutrient absorption
• Changes in cognitive and emotional states
• Skin and hair changes
• Fatigue and sleep changes
• Risk of chronic disease increases due to the decrease in estrogen levels.

Because of these changes, some women pay closer attention to specific nutrients and review the benefits of vitamins and supplements for women over 40 as part of their overall health strategy.

Key Nutrients Women Over 40 Often Consider

Vitamin D: Supporting Bone Strength and Immunity

Vitamin D helps the body absorb calcium and plays an important role in immune function, muscle health, and bone density.

Deficiency becomes more common with age, especially for individuals who spend limited time in sunlight.

The National Institutes of Health Office of Dietary Supplements notes that vitamin D deficiency is widespread among adults.

Food sources include:

• Egg yolks
• Fatty fish such as salmon and mackerel
• Fortified dairy products
• Fortified plant-based beverages

Vitamin D deficiency is common in adults, particularly in northern climates or among individuals with limited sun exposure. — Dr. JoAnn Manson, professor of medicine at Harvard Medical School and chief of preventive medicine at Brigham and Women’s Hospital.

If blood tests reveal low levels, a physician may recommend supplements.

Omega-3 Fatty Acids: Brain and Heart Support

Omega-3 fatty acids, particularly EPA and DHA, support cardiovascular health, brain function, and inflammation regulation. Researchers have also explored their role during menopause.

A 2025 review published in Post Reproductive Health found omega-3 fatty acids may support brain health during the menopausal transition.

Natural sources include:

• Salmon and sardines
• Walnuts
• Flaxseed
• Chia seeds

Omega-3 fatty acids, particularly EPA and DHA, play an important role in brain health and may help reduce inflammation in the body. Research has also examined their potential benefits during midlife. In some studies, women between the ages of 40 and 55 who experienced psychological stress and took omega-3 supplements for a period of time reported improvements in certain stress-related symptoms.

Women who rarely eat fish may discuss omega-3 supplementation with their healthcare provider.

Calcium: Protecting Bone Density

Bone density naturally declines with age, particularly as estrogen levels begin to fall. Women face a significantly higher risk of osteoporosis than men, according to the National Osteoporosis Foundation.

Calcium-rich foods include:

• Dairy products
• Sardines or canned salmon with bones
• Leafy green vegetables
• Fortified plant milks

Experts generally recommend meeting calcium needs through food first, using supplements only when dietary intake is insufficient.

Protein: Preserving Muscle Mass

Beginning in midlife, women gradually lose muscle mass through a process known as sarcopenia. Adequate protein intake helps maintain muscle strength, metabolism, and mobility.

Experts at the Mayo Clinic say that adults should spread protein intake throughout the day and include high-quality protein sources at meals,” according to nutrition experts at the Mayo Clinic Health System.

Healthy protein sources include:

• Fish and seafood
• Eggs
• Lean poultry
• Beans and lentils
• Nuts and seeds
• Greek yogurt

Magnesium: Sleep, Stress, and Muscle Function

Magnesium supports more than 300 biochemical processes in the body.

It plays a role in:

• Muscle relaxation
• Sleep quality
• Nerve signaling
• Stress response

Magnesium-rich foods include:

• Almonds and cashews
• Spinach
• Brown rice
• Whole grains
• Black beans

Some women consider supplements if dietary intake is insufficient or if symptoms such as muscle cramps or sleep disturbances occur.

Vitamin B12: Energy and Nerve Health

Vitamin B12 supports red blood cell production, brain function, and nerve health. Absorption may decline with age because stomach acid levels decrease.

People at greater risk of deficiency include:

• Adults over 50
• Vegetarians or vegans
• Individuals with digestive disorders

Symptoms of deficiency may include fatigue, memory problems, or tingling sensations in the hands and feet.

Emerging Supplements Some Women Explore

Ashwagandha

Ashwagandha is an herbal supplement studied for its potential role in stress management. The NIH Office of Dietary Supplements notes that research suggests ashwagandha may help reduce perceived stress and improve sleep in some individuals, though more research is needed.

Curcumin

Curcumin, the active compound in turmeric, has been widely studied for its anti-inflammatory effects. A 2024 review in Geroscience found curcumin may influence pathways involved in aging and inflammation.

A randomized controlled trial published in BMJ Open (2025) also suggested curcumin supplementation may reduce fatigue and musculoskeletal symptoms in postmenopausal women.

Fiber and Probiotics for Gut Health

Gut health plays an increasingly important role in metabolism, immunity, and inflammation. Fiber supports digestive health and stable blood sugar levels.

Fiber-rich foods include:

• Fruits and vegetables
• Whole grains
• Beans and lentils
• Nuts and seeds

Probiotics help maintain a healthy gut microbiome. A 2024 meta-analysis in Current Research in Food Science found probiotic supplementation showed moderate benefits for weight management and metabolic health in overweight women.

Do All Women Over 40 Need Supplements?

Not necessarily. Many women meet their nutritional needs through diet and lifestyle alone. Whether supplements are helpful depends on several factors:

• Diet quality
• Blood test results
• Medical history
• Medication use
• Lifestyle habits

The U.S. Food and Drug Administration says that dietary supplements should complement, not replace, a healthy diet. A healthcare professional can help determine whether supplementation is appropriate.

Nutrition in Your 40s Can Shape Your Health Later

Midlife health habits often influence how well you age. Maintaining strong bones, healthy muscles, and a balanced metabolism during your 40s and 50s can reduce the risk of frailty, falls, and chronic disease later in life.

These factors can also influence whether someone remains independent or eventually requires assistance with daily activities and the need for long-term care.

Supplements may support health in some cases, but they work best alongside balanced nutrition, regular physical activity, and preventive medical care.

Taking a proactive approach to your health can pay dividends later in life. For women, who tend to live longer than men and often require long-term care for a longer period, these choices can make a meaningful difference. Staying on top of your health and planning ahead should be part of your overall retirement strategy.

Make regular visits to your doctor and keep up with recommended screenings, tests, and lab work. It’s also wise to review your financial and retirement plans, including whether adding Long-Term Care Insurance could help ensure access to quality extended care if you need it in the future.

Aging brings challenges, but preparation can help you maintain independence and enjoy more healthy years before any decline.

Frequently Asked Questions

Why do my knees hurt more after turning 40?

It is common to notice changes in joint comfort as you age. Over time, cartilage naturally experiences wear and tear, and factors such as physical activity, past injuries, body weight, and posture can affect how your joints feel. Staying physically active, maintaining a healthy weight, and supporting joint strength through exercise may help promote overall joint health.

Do I need calcium supplements if I drink milk daily?

Milk and dairy products are good natural sources of calcium. However, individual calcium needs can vary depending on age, diet, bone health, and lifestyle. Some people may meet their needs through food alone, while others may benefit from supplements. A healthcare provider can help determine whether additional calcium is necessary.

Are omega-3 supplements necessary in midlife?

Omega-3 fatty acids are important nutrients found in foods such as fatty fish, walnuts, flaxseeds, and certain plant oils. Many people obtain sufficient omega-3s through their diet. If dietary intake is low, a healthcare provider may recommend omega-3 supplements to support heart and overall health.

Why am I more tired after turning 40?

Energy levels can change over time. Factors such as sleep quality, stress, hormone changes, diet, physical activity, and work schedules can all affect how energetic you feel. Maintaining regular sleep habits, eating balanced meals, managing stress, and staying physically active may help support steady energy levels.

Why is my skin suddenly dry or more wrinkled?

Skin naturally changes with age. The body gradually produces less collagen and natural oils, which can lead to dryness and the appearance of fine lines. Sun exposure, hydration, skincare routines, and lifestyle habits can also affect skin health. Many people adjust their skincare products and routines as their skin’s needs evolve.

Does collagen help aging skin?

Collagen is a protein naturally produced by the body that helps maintain skin structure and elasticity. Many skincare and nutritional products include collagen or ingredients intended to support collagen production. Results can vary between individuals, and maintaining healthy skin generally involves a combination of good nutrition, sun protection, and consistent skincare habits.