Interview with Dr. Sara Gottfried, Hormone and Personalized Medicine Expert

Hormone health is not about finding one magic lab, one perfect supplement, or one prescription that works for everyone. It is about understanding the full picture: our symptoms, our history, our genetics, our metabolism, our food, our stress load, our sleep, and what our bodies are actually telling us. Dr. Sara Gottfried sits with Dr. Thais Aliabadi and Mary Alice Haney to discuss this intricate issue.

For so many of us, the first signs of hormonal dysregulation are easy to dismiss. We are suddenly craving sugar before a period, gaining weight despite doing what used to work, waking at 3 a.m., losing our ability to handle stress, forgetting words, feeling anxious, or simply not feeling like ourselves. These are not character flaws. They can be clues.

Table of Contents

• From Feeling Maxed Out to Practicing Personalized Medicine
• Hormonal Dysregulation Is a Real Experience
• Testing Hormones: Context Matters
• Perimenopause, Hormone Therapy, and the Brain
• Autoimmunity, Stress, and the Gut
• Personalizing Food for Insulin Resistance
• The Five Hormone Hacks That Matter Most

From Feeling Maxed Out to Practicing Personalized Medicine

What led you from conventional OB/GYN practice into hormone and personalized medicine?

We were trained in conventional medicine, and that training is extraordinarily valuable. But in my mid-30s, after having my first child, I had a personal experience that changed the way I thought about women’s health.

I was postpartum, exhausted, struggling to lose weight, sleeping poorly, and dealing with low libido. I was seeing around 40 patients a day and having trouble getting through the day. When I went to my primary care doctor with this list of symptoms, the immediate suggestions were an antidepressant and the birth control pill.

That was the moment I turned left. I remember thinking: if we are physicians and this is the level of care available to us, imagine how many other women are struggling without answers.

I tested my hormones and found that my cortisol was roughly three times higher than it should have been. I also had estrogen dominance, meaning high estrogen relative to progesterone, and low DHEA. It was the hormonal picture of someone who was completely maxed out.

That experience made us want to understand not only what can go wrong in the female body, but also what helps it work beautifully. It led us toward an approach that combines conventional medicine with nutrition, behavior change, biomarkers, hormone testing, and the individual story behind each set of symptoms.

Hormonal Dysregulation Is a Real Experience

What do you mean when you describe women as feeling dysregulated?

We use “dysregulation” to describe the feeling that our internal systems are no longer working in sync. We do not bounce back from stress the way we once did. Our usual approach to weight management stops working. Sleep gets lighter, moods become more volatile, and the week before a period may feel dramatically different from the rest of the month.

For many women, this starts somewhere between ages 35 and 45, which often overlaps with perimenopause. Symptoms may include:

• Sugar cravings, especially before a period
• Hot flashes and night sweats
• Insomnia or fragmented sleep
• Anxiety, depression, or irritability
• Changes in body composition and weight
• Brain fog and trouble retrieving words
• Low libido and reduced resilience

When we do not know how to interpret these symptoms, we often reach quickly for a sleeping pill, anti-anxiety medication, or birth control pill. Those options may have a place for some people, but they should not automatically end the conversation. We have to ask what is happening at the root.

How does a personalized medicine evaluation begin?

It begins with the story. We want to understand what is bothering us most, what our goals are, what our values are, what changed, and what “better” would look like. A woman seeking help for hot flashes may need a very different plan from an executive focused on performance and career longevity, or from an athlete focused on muscle gain and recovery.

Then we bring together the story with data. Depending on the person and the clinical question, this can include genetics, blood testing, hormone testing, stool testing, and metabolic biomarkers.

For cardiometabolic health, we may look beyond a standard cholesterol panel at markers such as LDL particle measures, oxidized LDL, myeloperoxidase, inflammation, and other indicators of metabolic risk. We also assess insulin resistance and blood sugar regulation because metabolic dysfunction is incredibly common.

Hormone testing may include cortisol, estrogen, progesterone, testosterone, and DHEA. The point is not to become obsessed with a single number. The point is to understand patterns and make the numbers meaningful in the context of symptoms.

Testing Hormones: Context Matters

Should we test our hormones, and what is the best method?

We absolutely need context. Hormones fluctuate by time of day, stage of life, menstrual cycle phase, medications, stress, and sleep. A lab result is not a diagnosis on its own, and symptoms should never be ignored simply because one blood draw looks “normal.”

Blood testing is the shared language of medicine and is particularly useful for many measures, including thyroid testing. But it has limits. For cortisol, for instance, blood can measure total cortisol, while saliva or dried urine can help assess free cortisol, the biologically active form.

For cycling women, timing matters. Day-three testing may be used for measures such as FSH and estradiol, while a progesterone test later in the cycle can help evaluate whether ovulation occurred. For women who are postmenopausal and have not had a period for more than a year, timing is less dependent on cycle day.

We use different tools for different questions:

• Blood: Useful for standard medical testing, thyroid markers, cardiometabolic markers, and many hormone measures.
• Saliva: Helpful for assessing free cortisol patterns over the course of a day.
• Dried urine: Helpful for looking at free hormone levels and hormone metabolites.

One empowering recommendation is to obtain a baseline earlier in life, ideally while we feel well. Knowing what our hormones and biomarkers look like when we are regulated can make later changes easier to interpret.

Perimenopause, Hormone Therapy, and the Brain

Why can perimenopause feel so disruptive?

Perimenopause is not just about periods becoming irregular. It can affect sleep, mood, temperature regulation, metabolism, and cognition. Estradiol often becomes more variable early in the transition, and that fluctuation can be difficult to tolerate.

When appropriate, hormone therapy can be a powerful tool. We generally think about what is structurally most similar to the hormones a woman has made naturally. In practice, transdermal estradiol, often delivered through a patch, is commonly used because it has a favorable safety profile compared with oral estrogen in many situations. Natural micronized progesterone is also commonly used.

But there is no universal hormone protocol. For a woman who is still cycling and appears to be in early perimenopause, progesterone alone may sometimes be the first step. It can be especially helpful for sleep, which matters because women experience insomnia at higher rates than men, particularly through this hormonal transition.

If symptoms such as depression, hot flashes, or night sweats remain significant, a clinician may consider adding transdermal estradiol. Dosing, timing, cycling, and the choice of formulation all need to be individualized and monitored by a qualified clinician.

We should never self-adjust hormone doses. More is not necessarily better. A dose that is too high can create symptoms of its own, including irritability and mood changes.

What is cerebral hypometabolism, and why does it matter for women over 40?

Cerebral hypometabolism is a term used to describe reduced brain energy metabolism. Many of us call it brain fog. It may look like walking into a room and forgetting why we are there, being unable to retrieve a familiar word, losing our phone constantly, or feeling as though our thinking is slower than it used to be.

The female brain changes with age and hormonal transition. Research discussed in this conversation suggests that many women experience a decline in how efficiently the brain uses glucose from their 30s into perimenopause, with an additional decline after menopause. Since the brain relies heavily on energy, we can feel that shift.

Estrogen appears to be an important regulator of this system. That does not mean hormone therapy is appropriate for every woman. A personal history of breast cancer, current anti-estrogen treatment, clotting risk, and other medical factors all matter. But it does mean we need a more informed and nuanced conversation about who may benefit, when treatment should begin, and what alternatives exist for those who cannot take estrogen.

For women who qualify, starting an evidence-based hormone therapy conversation early in perimenopause or closer to menopause may be particularly important for brain-related symptoms. We also need appropriate breast screening and individualized risk assessment.

For more support around this transition, including practical guidance on sleep habits, our resource on getting a good night’s sleep can help us build the foundational routines that hormones alone cannot replace.

Autoimmunity, Stress, and the Gut

How do autoimmunity and hormonal health intersect?

Autoimmunity is one of the areas where we need to pay attention earlier. Anti-nuclear antibodies, or ANAs, can indicate that the immune system is reacting against components of the body’s own cells. A positive ANA does not diagnose a specific autoimmune disease by itself, but it can be a signal to investigate more deeply.

We can think about autoimmunity as requiring three elements:

1. A genetic predisposition
2. Increased intestinal permeability, often called leaky gut
3. A trigger

We cannot change our genes, but we may be able to address gut health and triggers. Triggers can vary. For some people, infection may be relevant. For others, trauma can be a significant part of the picture.

Our approach should be compassionate, not blaming. Trauma can live in the nervous system even when we grew up with love and support. It can keep us in a sympathetic, fight-flight-freeze state, making it difficult to access the parasympathetic state where restoration happens.

Food, targeted nutrients, body-awareness practices, meditation, movement, and trauma-informed care may all have roles. None should be treated as a substitute for needed medical care, but they can be part of a wider strategy.

What does stool testing reveal about the microbiome?

Stool testing can help assess dysbiosis, or an imbalance between beneficial and less beneficial microbes. It can also offer clues about digestion, inflammation, immune activity, nutrient processing, and whether there are signs consistent with intestinal permeability.

A person does not need obvious digestive symptoms to have a gut issue worth addressing. The gut plays a central role in metabolic health, immune function, and hormone metabolism. During perimenopause and menopause, gut function may influence how hormones are produced and processed throughout the body.

When it comes to probiotics, the science is evolving. Probiotics may influence signaling in the gut, but prebiotics often have stronger evidence for helping support beneficial microbes. We often think about a combination rather than treating one capsule as a complete answer.

Fermented vegetables such as sauerkraut and kimchi can also be useful food-based options. The goal is not perfection. It is a gradual shift toward a gut environment that supports overall health.

Personalizing Food for Insulin Resistance

Why is a food-first philosophy so important for hormone health?

Food is not a minor detail. It is one of the most powerful inputs we give our bodies every day. We often reach rapidly for metformin, berberine, or another solution for insulin resistance without first understanding how a particular food pattern is affecting us.

There is only a thin intestinal barrier between the outside world we bring in through food and the inner workings of the body. That deserves respect.

A continuous glucose monitor can be especially helpful for personalizing nutrition, even for people without diabetes or prediabetes. It offers real-time feedback. Foods that seem universally healthy may not work the same way for everyone. For one person, beans, hummus, and grains may lead to a significant glucose spike. Another person may tolerate them well.

This is why general nutrition advice has limits. We want to know: What happens in our body? How do we feel? What does our glucose do? Does a certain meal support stable energy, or does it lead to hunger, fatigue, cravings, and a glucose roller coaster?

For women managing insulin resistance, PCOS, or metabolic changes, sustainable eating and strength training matter enormously. Our guide to PCOS diet and exercise offers additional practical strategies for building a plan that supports steadier blood sugar without extreme restriction.

Are keto and intermittent fasting good options for women?

They can be useful for some people, but neither should be treated as a universal prescription.

A traditional ketogenic diet is very high in fat, low in carbohydrates, and moderate in protein. It has been studied extensively, but it may not be ideal for every woman. Very low carbohydrate intake can affect menstrual cycles, thyroid regulation, serotonin production, sleep, and cortisol. For some women, especially those already under significant stress, extreme carbohydrate restriction can make dysregulation worse.

A more female-friendly ketogenic approach may include more vegetable-based carbohydrates and a personalized carbohydrate threshold. The question is not whether keto is “good” or “bad.” The question is whether it improves glucose regulation and energy without worsening sleep, stress, or hormonal symptoms.

Intermittent fasting has a similar story. It can improve insulin signaling, but a highly restrictive eating window may become another stressor for women over 40 who are already managing hormonal change. A 12-hour overnight food break may be more sustainable for some people than a 16-hour fast.

We need to listen to the body. If fasting leaves us shaky, exhausted, preoccupied with food, unable to sleep, or more stressed, it is not serving us in that form.

What about berberine, metformin, and exercise?

For insulin resistance, we start with food and data. A continuous glucose monitor can clarify which meals work best. If supplementation is appropriate, berberine may be considered because it can support insulin sensitivity and may also have antimicrobial effects. In this discussion, the approach described was to use it in pulses, such as six to eight weeks on followed by a short break, rather than taking every supplement indefinitely.

Metformin can be an important medication for the right person, but it is not automatically the first answer for everyone. Medical decisions should always be made with a clinician who understands our health history, goals, medications, and lab data.

And then there is movement. We cannot overstate it: strength training is essential. Women are often told to walk, do cardio, and avoid getting “bulky.” We need to let that fear go. Lifting heavy builds strength, confidence, metabolic resilience, and agency. It is one of the most important long-term investments we can make.

The Five Hormone Hacks That Matter Most

If you could give every woman five practical hormone health priorities, what would they be?

We would begin here:

1. Test our hormones and establish a baseline. If we are in our 20s, 30s, or early 40s and feeling good, this is an ideal time to understand our baseline. Blood, saliva, and dried urine testing can each have a role depending on the clinical question.
2. Personalize our food plan. Food first. A continuous glucose monitor can help reveal how meals influence glucose, cravings, mood, and energy. We want the foods that nourish our particular body most deeply.
3. Lift heavy weights. Start early and continue for life. Strength training is not just about appearance. It supports metabolism, bone health, function, and a profound sense of capability.
4. Protect sleep. Sleep is one of the closest things we have to a panacea. Tracking sleep through a wearable can help us understand deep sleep, REM sleep, awakenings, heart rate variability, and recovery patterns.
5. Build purpose and meaning. Health span and longevity are not only about biomarkers. Purpose can come from our family, work, creativity, community, a cause, or service. It helps buffer us through difficult, dysregulated periods.

That final point is not soft or optional. Purpose is medicine in its own way. When life feels demanding, purpose gives us a reason to keep choosing the actions that support us.

Our health does not need to become another full-time job. It can begin with one piece of useful information, one strength session, one better night of sleep, one meal that makes us feel steady, or one honest conversation with a clinician who takes our symptoms seriously.

Frequently Asked Questions About Hormone Health

What are common signs of hormonal dysregulation?

Common signs include insomnia, hot flashes, night sweats, brain fog, sugar cravings, anxiety, depression, low libido, changes in weight, and reduced resilience to stress. These symptoms can have multiple causes, so a medical evaluation is important.

Can hormone testing diagnose perimenopause?

Hormone tests can add useful information, but perimenopause is assessed through both symptoms and context because hormone levels can fluctuate significantly. Cycle timing and the specific hormone being tested also matter.

Is hormone therapy right for everyone?

No. Hormone therapy should be individualized based on symptoms, age, timing, medical history, cancer risk, medications, and other personal factors. We should discuss risks and benefits with a qualified clinician.

Can a continuous glucose monitor help if we do not have diabetes?

It may provide useful feedback about how meals affect our glucose, energy, hunger, and cravings. It is most helpful when used to guide practical experiments rather than to create anxiety around food.

What is the most important exercise for hormone health after 40?

Walking and cardio remain valuable, but regular strength training with progressively heavier resistance is especially important for metabolism, muscle, function, and long-term health.