Perimenopause isn’t something that suddenly “happens” to you. It’s a gradual transition — one that often begins in your late 30s or early 40s — as your hormones begin to shift and recalibrate.

From a functional medicine perspective, this stage of life is about resilience.

Dr. Lisa Mosconi shared in the Washington Post, “Menopause is actually a neuroendocrine transition… a neuroendocrine transition state… which means that your brain, your neurological system, and your endocrine system, your hormonal system, are changing together…”

If we support the body well before symptoms become intense, the perimenopausal transition can feel less disruptive and more manageable.

Here’s how I think about preparing for this transition:

First, understand that it’s not just about estrogen.

Many women assume perimenopause means low estrogen. In reality, estrogen often fluctuates wildly before it declines. Progesterone is usually the first hormone to drop, which can lead to shorter cycles, heavier bleeding, mood changes, sleep disruption, or increased anxiety.

But here’s what’s important: symptoms are rarely caused by ovarian hormones alone.

Your adrenal glands (stress response), thyroid, blood sugar balance, gut health, and liver detox pathways all influence how you experience this transition.

When those systems are supported, hormone shifts feel less dramatic.

Support your stress response early.

As ovarian hormone production becomes less predictable, your body leans more on adrenal resilience. If you’re already running on chronic stress, poor sleep, and high caffeine, perimenopause can feel amplified.

Foundational support includes:
– Consistent, restorative sleep
– Strength training and regular movement
– Reducing excess caffeine and alcohol
– Breathwork or stress regulation practices
– Building supportive relationships and community

When cortisol rhythms are stable, mood swings, hot flashes, and sleep disturbances are often less severe.

Second, focus on stabilizing blood sugar.

Estrogen plays a protective role in metabolic health. As it fluctuates, many women notice increased abdominal weight gain, stronger carbohydrate cravings, and energy crashes.

This is a signal to focus on:
– Eating enough protein
– Reducing added sugars
– Avoiding long periods of under-eating
– Prioritizing fiber-rich vegetables
– Including healthy fats like omega-3s

Perimenopause is NOT the time to start fasting!

Balanced blood sugar improves mood, reduces inflammation, and helps minimize weight changes during this phase.

Next, focus on supporting detoxification and gut health.

Hormone balance isn’t only about how much you produce — it’s also about how well you metabolize and eliminate hormones.

Your liver and gut microbiome help to process estradiol. If those systems are sluggish, symptoms like breast tenderness, heavy periods, or PMS-type mood shifts can worsen.

Simple support strategies include:
– Eating cruciferous vegetables (chop at least 30 mins before eating to increase the benefits, if cooking, pair with mustard seed to increase sulforaphane).
– Ensuring adequate B vitamins and magnesium
– Supporting regular DAILY bowel movements
– Prioritizing fiber (~10 grams/meal) and hydration

Last, but not least, optimize bone and brain health.

Bone loss begins during perimenopause, not after menopause. Weight-bearing exercise and adequate vitamin D, K2, protein, and minerals become especially important.

Brain fog and memory changes are often related to sleep disruption, stress physiology, and blood sugar swings — not just estrogen decline.

Addressing those foundations makes a significant difference.

And what about hormone therapy?

Hormone therapy is an important tool that can help reduce vasomotor symptoms (hot flashes and night sweats), support cardiovascular health, maintain bone health, and much more. It’s important to find someone well-versed in menopausal hormone therapy (MHT) to select the best option for each woman’s individual needs.

The key is personalization.

Functional medicine isn’t about automatically prescribing or avoiding hormones. It’s about understanding your full health story and choosing what supports your long-term vitality.

The bottom line:

Perimenopause and menopause are certainly not diseases. Menopause is a significant transition, offering a valuable opportunity to refocus on optimizing health and longevity.

When you strengthen sleep, stress resilience, metabolic health, detox pathways, muscle mass, and community, your hormones will undoubtedly decline. Still, you will have a strong foundation underneath you and a community surrounding you to support the transition.

If you’re in your late 30s or 40s, this is the time to prepare.

The work you do now builds the foundation for how you feel in your 50s, 60s, and beyond.

And that’s something worth investing in.