What Does Ovarian Aging Actually Mean for Your Health?

Ovarian aging is not just a fertility issue. As your ovaries produce less estrogen over time, that hormonal shift has downstream effects on your brain, heart, bones, and metabolism — effects that often begin in your late 30s and 40s, well before menopause arrives. Understanding what is happening and why gives you a real window to act. The good news is that cellular health practices, including supporting NAD+ levels, are an emerging area of research aimed at preserving what your ovaries do for your whole body, for as long as possible.

Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition.

What are ovaries actually doing beyond reproduction?

Most people think of ovaries in the context of fertility and periods. But ovaries are endocrine organs, which means their primary job for most of your life is producing hormones: estrogen, progesterone, and small amounts of testosterone. These hormones travel through your bloodstream and reach almost every organ system in your body.

Estrogen, in particular, plays an outsized role in non-reproductive health. It supports bone density by slowing the breakdown of bone tissue. It supports cardiovascular function by helping maintain flexible blood vessels. It supports brain health by fueling glucose metabolism in the hippocampus and prefrontal cortex — the regions responsible for memory, focus, and emotional regulation. When ovarian function declines, estrogen production declines with it, and every one of those systems feels the change.

"The menopausal transition is marked by an overall decline in ovarian sex steroid production — up to 90% in the case of estradiol — a dramatic endocrine change that impacts multiple biological systems, including the brain."

— Jett et al., Frontiers in Aging Neuroscience, published via the National Institutes of Health

When does ovarian aging actually begin?

Ovarian aging is a gradual process, not a switch that flips at menopause. The ovarian reserve — the pool of eggs and follicles your ovaries contain — begins declining at birth and continues throughout your reproductive years. What changes in your mid-to-late 30s is the rate of that decline. Hormonal fluctuations that most women first notice in their late 30s and 40s reflect ovarian function becoming less consistent, not suddenly failing.

Perimenopause, the transitional phase before menopause, can begin as early as the mid-30s for some women and typically lasts several years. During this time, estrogen levels fluctuate rather than simply dropping in a straight line. These fluctuations — highs and lows within the same month — explain why the symptoms of perimenopause can feel so unpredictable. Your body is not in a stable hormonal state; it is in transition.

Research published via the NIH Office of Intramural Research from Columbia University scientists highlights that ovarian aging may actually be one of the primary drivers of systemic aging in women — not just a byproduct of getting older, but a cause of it across multiple body systems.

What happens to your brain when ovarian function declines?

Estrogen supports the brain in concrete, measurable ways. It fuels glucose metabolism in regions responsible for memory and attention. It supports the density of synaptic connections — the physical links between brain cells. When estrogen fluctuates or declines, the brain adapts, but the adaptation process involves real functional changes that women recognize as brain fog, word-finding difficulty, and emotional volatility.

Research from the Women's Brain Initiative at Weill Cornell Medicine has documented that up to 80% of perimenopausal and postmenopausal women report neurological symptoms including changes in mood, sleep, and cognitive performance, and that these changes have structural and metabolic roots — not just emotional ones. This is not in your head. It is in your brain's chemistry.

"Ovarian function appears to protect against dementia and Alzheimer's, heart disease, stroke, and even all-cause death."

— Columbia University Fertility Center, VIBRANT study annual report, 2024

What happens to your heart, bones, and metabolism?

Cardiovascular risk increases after menopause, and the mechanism is direct: estrogen helps maintain arterial flexibility and supports healthy lipid profiles. When estrogen declines, those protective effects weaken. Women's cardiovascular risk, which is lower than men's during the reproductive years, catches up and eventually surpasses men's risk in the postmenopausal years. This is not coincidence — it is biology.

Bone density follows a similar pattern. Women can lose up to 10% of bone mass in the years immediately surrounding menopause, according to research cited in clinical literature on high-intensity resistance training for perimenopausal women. Estrogen normally slows the activity of osteoclasts — cells that break down bone tissue. Without it, bone resorption accelerates. The window around perimenopause is when this process is most active, which makes it the most important time to act on bone health, not after a fracture occurs.

Metabolic shifts are also common. The redistribution of body fat toward the abdomen, changes in insulin sensitivity, and shifts in energy expenditure that many women notice in their 40s are partly driven by the same hormonal changes affecting everything else.

Where does NAD+ fit into the ovarian aging picture?

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme present in every cell in your body. It is required for cellular energy production, DNA repair, and cell signaling — functions that become increasingly important as ovarian aging places stress on cellular systems throughout the body. NAD+ levels also naturally decline with age, beginning in your 30s, which means ovarian aging and NAD+ decline are happening on overlapping timelines.

Research published in the journal Biomolecules via the National Institutes of Health describes NAD+ as an essential coenzyme in cellular energy production, metabolism, cell signaling, and survival — one that is "fundamentally connected to energy production, which is essential to support the growth and development of oocytes" and broader cellular maintenance. A 2024 study published in Pharmaceutical Research examined nicotinamide riboside (NR), a bioavailable precursor to NAD+, and found it influenced mitochondrial dynamics in ovarian tissue of middle-aged animals, suggesting a role for NAD+ precursors in supporting cellular health in aging ovarian systems.

This research is preliminary and conducted in animal models — it does not establish that any supplement reverses ovarian aging in humans. What it does establish is a plausible cellular connection between NAD+ status and the health of the systems ovarian aging most affects: energy metabolism, DNA repair, and mitochondrial function.

Pink Stork NAD+, formulated with 500 mg of clinically studied nicotinamide riboside and third-party tested at cGMP-certified facilities, supports healthy NAD+ levels in the body.† It is available at Target, Walmart, and CVS, and has been formulated specifically for women navigating the cellular energy changes that accompany aging.

"I built Pink Stork because I lived through how unprepared women are for the ways their bodies change — and how little science has been done specifically for us. Every product starts with what the research actually supports, not what sounds good on a label."

— Amy Suzanne Upchurch, Founder and CEO of Pink Stork

What can you do now, in your 30s and 40s?

The most meaningful action you can take is to start early. The systems that ovarian aging affects — bones, cardiovascular health, brain function, metabolic health — are all more responsive to proactive support before significant decline begins than after.

• Resistance training. The single most evidence-backed intervention for bone density, muscle preservation, and metabolic health during the perimenopausal years. For more on this, see our guide on why strength training is the most important longevity investment for women.
• Protein intake. Muscle preservation requires adequate dietary protein, especially as anabolic signaling from hormones declines. Most women eat less protein than their muscle and metabolic health require.
• Cellular support. Supporting NAD+ levels with a clinically studied precursor like NR is an emerging area of longevity research. Our NAD+ supplement with 500 mg clinically studied NR is designed specifically for women navigating these transitions.†
• Whole-food nutrient density. Micronutrients including iron, B12, CoQ10, and vitamin A — all found in whole-food form in our grass-fed beef organ complex designed for women's hormonal changes — support the energy and cellular repair functions that become more important as ovarian aging progresses.†
• Stress management. Chronic stress and high cortisol interact with hormonal health. Supporting a healthy stress response† is part of the same picture as supporting ovarian health during the transition years.

"It's not a one-size-fits-all."

— Dr. Samantha Ess, ND, Naturopathic Doctor specializing in hormone health and fertility

Working with your healthcare provider to understand where you are in your hormonal transition — including bloodwork if appropriate — is the most important step. Supplements support, but they do not replace individualized care.

Frequently asked questions

At what age does ovarian aging start to affect health?

Ovarian aging is a gradual process that begins much earlier than most women expect. The hormonal fluctuations that produce noticeable symptoms often begin in the late 30s to mid-40s, though the timeline varies significantly from person to person. The cellular changes that underlie those symptoms can begin earlier still.

Is ovarian aging the same as menopause?

No. Menopause is a defined moment — 12 consecutive months without a period — that marks the end of ovarian hormone production. Ovarian aging is the gradual process that leads to menopause, unfolding over years or decades before that point. Perimenopause is the transitional phase during which ovarian aging produces the most noticeable hormonal fluctuations.

Can anything slow ovarian aging?

This is an active area of research. Lifestyle factors including resistance training, adequate sleep, stress management, and nutrient sufficiency are associated with overall cellular health, which supports every system that ovarian hormones normally protect. No supplement or intervention has been proven to reverse ovarian aging in humans, but supporting cellular health proactively is a reasonable and evidence-informed approach.

How does ovarian aging affect the brain?

Estrogen produced by the ovaries supports glucose metabolism in brain regions responsible for memory, attention, and emotional regulation. As estrogen levels fluctuate and decline during perimenopause, many women experience brain fog, mood changes, and word-finding difficulty. These are real neurological changes with a hormonal basis, not simply stress or aging in a general sense. For more, see our guide on why perimenopause brain fog and mood changes happen, and what actually helps.

Is NAD+ relevant for women going through perimenopause?

NAD+ levels naturally decline with age, on a timeline that overlaps with perimenopause. Because NAD+ is required for cellular energy production, DNA repair, and mitochondrial function — all of which become more important as ovarian hormone support declines — supporting NAD+ levels is an emerging area of women's longevity research. Pink Stork NAD+ is formulated with 500 mg of clinically studied NR, third-party tested, and designed for women navigating these transitions.†

Should I get my hormone levels tested if I think I'm in perimenopause?

Speak with your healthcare provider. Hormone levels fluctuate significantly during perimenopause, which makes a single blood test less definitive than your symptom pattern over time. Your provider can help interpret results in context and discuss what, if any, interventions make sense for your individual situation.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any new supplement, especially during pregnancy, breastfeeding, or while managing a medical condition. Keep out of reach of children.