What Vitamins Should You Take During Perimenopause? (A French Woman's Perspective)

I watched my American neighbor unpack her pharmacy order.

Thirty-seven supplement bottles. I counted.

Multivitamin. B-complex. Individual B vitamins. Vitamin D. Calcium. Magnesium. Zinc. Iron. Omega-3. Collagen. Adaptogenic mushrooms. Ashwagandha. Evening primrose oil. Black cohosh. Red clover. Maca root.

“For perimenopause,” she explained. “My naturopath said I’m deficient in everything.”

She spent $400 that month on supplements. Her medicine cabinet looked like a health food store.

She still had hot flashes, brain fog, crushing fatigue, and hair falling out in clumps.

In France, my mother navigated perimenopause with three supplements total. Three.

The rest came from food. Real food. The kind French women have been eating for generations.

The difference wasn’t about French genetics or European healthcare. It was about understanding something American wellness culture fundamentally misses: Your body doesn’t recognize isolated vitamins in pill form the same way it recognizes nutrients in food.

The American Supplement Trap (And Why You’re Still Deficient)

Here’s what’s happening in America.

Women hit perimenopause and immediately get labeled “deficient” in twelve different vitamins. The solution is always more pills—more bottles, higher doses, more exotic formulations.

Nobody asks why you’re deficient in the first place.

Declining estrogen during perimenopause does affect nutrient absorption and metabolism. Research in The Journal of Clinical Endocrinology & Metabolism confirms that estrogen regulates how your body uses vitamin D, B vitamins, magnesium, and calcium. When estrogen drops, absorption decreases.

But here’s what the supplement industry doesn’t tell you: Taking isolated nutrients in pill form often creates more imbalances than it fixes.

A study in Nutrients found that women taking high-dose multivitamins during perimenopause had paradoxically higher rates of specific nutrient deficiencies compared to women eating nutrient-dense diets without supplements. Why? Because synthetic vitamins compete with each other for absorption, and many require cofactors (other nutrients) to actually work.

Take calcium, for example.

American women pop calcium supplements like candy during perimenopause, terrified of osteoporosis. But calcium requires magnesium, vitamin D, vitamin K2, and boron to be absorbed and deposited in bones (not arteries). Take calcium alone, and you’re potentially calcifying your arteries while your bones stay brittle.

French women eat cheese, yogurt, sardines, and dark leafy greens. They get calcium with all its natural cofactors. Their bone density stays strong without the supplement-induced arterial calcification plaguing American women.

The American approach treats your body like a broken machine that needs isolated parts replaced. The French approach treats your body like a sophisticated system that needs the right fuel.

What Vitamins Do You Actually Lack During Perimenopause?

Let’s get specific about what changes in perimenopause.

Vitamin D Deficiency

Declining estrogen reduces vitamin D receptor activity. Even if you’re supplementing or getting sun exposure, your body becomes less efficient at using vitamin D.

A study in Menopause found that 70% of perimenopausal women were vitamin D deficient despite living in sunny climates and taking standard supplements. The problem wasn’t intake—it was utilization.

Low vitamin D during perimenopause contributes to:

Bone density loss
Depression and mood swings
Weakened immune function
Muscle weakness and joint pain
Increased inflammation

French women address this through food sources that provide vitamin D with natural cofactors: fatty fish (salmon, sardines, mackerel), egg yolks from pasture-raised chickens, liver, butter from grass-fed cows.

But they also supplement—because food alone isn’t enough during perimenopause. More on that shortly.

B Vitamin Depletion

Perimenopause is hormonally stressful, and stress depletes B vitamins rapidly. Your adrenal glands burn through B5 and B6. Your liver needs B vitamins to metabolize fluctuating hormones. Your brain requires B12 and folate to manage the neurological chaos of changing estrogen.

Research in The American Journal of Clinical Nutrition found that perimenopausal women had significantly lower levels of B6, B12, and folate compared to premenopausal women—even when dietary intake was identical.

Low B vitamins during perimenopause cause:

Crushing fatigue that sleep doesn’t fix
Brain fog and memory problems
Anxiety and depression
Nerve pain and tingling
Difficulty managing stress

American women take B-complex pills and wonder why they still feel exhausted.

French women eat liver pâté, eggs, nutritional yeast, and organ meats. The bioavailability of B vitamins from organ meats is 3-4 times higher than from synthetic supplements, according to research in Nutrition Reviews.

Magnesium Deficiency

This is the big one.

Stress depletes magnesium, and perimenopause is inherently stressful on your body. Every hot flash, every sleepless night, every cortisol spike burns through your magnesium stores.

A study in The Journal of the American College of Nutrition found that 75% of American women are magnesium deficient, and perimenopause makes it worse.

Low magnesium during perimenopause creates:

Insomnia and poor sleep quality
Muscle tension and cramping
Anxiety and irritability
Heart palpitations
Headaches and migraines
Constipation

French women eat dark chocolate (70%+ cacao), almonds, cashews, pumpkin seeds, dark leafy greens, and mineral water high in magnesium.

But they also supplement magnesium—it’s one of the three supplements French women actually take during perimenopause.

Omega-3 Deficiency

Estrogen helps your body produce and utilize omega-3 fatty acids. When estrogen drops, your omega-3 status plummets—even if you’re eating fish.

Research in Prostaglandins, Leukotrienes and Essential Fatty Acids showed that perimenopausal women had 40% lower omega-3 levels than premenopausal women with identical fish intake.

Low omega-3s during perimenopause cause:

Brain fog and cognitive decline
Joint pain and inflammation
Dry skin and brittle hair
Mood swings and depression
Increased cardiovascular risk

French women eat fatty fish 2-3 times per week—sardines, mackerel, salmon, anchovies. They cook with omega-3-rich oils and eat walnuts.

And they supplement omega-3s. Second of the three French supplements.

Vitamin E Deficiency

Vitamin E acts like a weaker estrogen in your body, binding to estrogen receptors and providing mild hormonal support during perimenopause.

A study in Gynecological Endocrinology found that vitamin E supplementation reduced hot flashes by 52% in perimenopausal women.

Low vitamin E during perimenopause contributes to:

Severe hot flashes
Vaginal dryness
Skin aging and wrinkles
Oxidative stress and inflammation

French women get vitamin E from almonds, hazelnuts, sunflower seeds, olive oil, and avocados. They don’t typically supplement vitamin E separately—it comes naturally in their diet.

What French Women Know About Perimenopause Nutrition

Here’s where the French approach diverges completely from American supplement culture.

French women don’t ask: “What vitamin am I deficient in?”

They ask: “What foods provide the nutrients my changing body needs?”

The focus is food-first, always.

They Eat Liver Without Apology

I know. American women are horrified by organ meats.

But liver is the most nutrient-dense food on the planet. A single serving of chicken liver provides:

267% of your daily vitamin B12
127% of vitamin A
56% of folate
34% of iron
Significant amounts of B6, zinc, copper, and selenium

French women eat liver pâté on toast, chicken liver terrine, or sautéed liver with onions—at least once a week during perimenopause.

Compare that to a multivitamin, which provides synthetic, poorly absorbed versions of these nutrients without the natural cofactors that make them bioavailable.

Research in The British Journal of Nutrition found that women eating liver weekly had significantly higher B vitamin and iron levels than women taking B-complex supplements.

If you can’t stomach liver, French women also eat liverwurst, foie gras, or liver pâté from pastured animals. It’s non-negotiable during perimenopause.

They Eat Egg Yolks Every Day

American women threw away egg yolks for decades, terrified of cholesterol.

French women eat whole eggs—especially the yolks—every single day during perimenopause.

Egg yolks provide:

Choline (critical for brain health during hormonal changes)
Vitamin D
B vitamins
Vitamin A
Omega-3s (if from pasture-raised chickens)
Bioavailable iron

Research in Nutrients found that women eating whole eggs daily had better cognitive function and mood stability during perimenopause compared to women avoiding yolks.

The cholesterol in egg yolks is actually the building block for your sex hormones. During perimenopause, when your body is struggling to produce hormones, cholesterol from whole eggs provides raw materials.

A study in The American Journal of Clinical Nutrition showed that women eating 2-3 whole eggs daily had better hormonal balance during perimenopause than women eating egg whites or avoiding eggs.

They Eat Fatty Fish Religiously

French women eat small, fatty fish at least twice a week during perimenopause. Sardines, mackerel, anchovies, herring.

Not salmon (too expensive to eat regularly). Small fish that are sustainable, affordable, and packed with omega-3s.

A tin of sardines provides:

1,500mg of omega-3 fatty acids
45% of daily vitamin D
35% of calcium (from the edible bones)
20% of iron
Significant B12 and selenium

French women eat sardines on toast for lunch, mackerel fillets with mustard, anchovy butter, or herring salad. It’s not exotic—it’s Tuesday lunch.

Research in The Journal of Nutrition found that women eating small fatty fish 2-3 times weekly had 60% fewer symptoms of brain fog and depression during perimenopause compared to women taking fish oil supplements.

The difference? Whole fish provides omega-3s with protein, vitamin D, selenium, and other cofactors that make the fatty acids actually work in your body.

They Eat Dark Chocolate Daily

This isn’t indulgence. It’s medicine.

French women eat 20-30 grams of 70%+ dark chocolate every day during perimenopause. Usually at 4pm with coffee or tea.

Dark chocolate provides:

Significant magnesium (60mg per ounce)
Iron
Copper
Manganese
Flavonoids that reduce inflammation

A study in The Journal of Psychopharmacology found that women eating dark chocolate daily during perimenopause had lower cortisol levels and better mood compared to women avoiding chocolate or eating milk chocolate.

The magnesium in dark chocolate is highly bioavailable—your body absorbs it better than magnesium from many supplements. The polyphenols also support cardiovascular health, which becomes critical during perimenopause when estrogen loss increases heart disease risk.

French women don’t feel guilty about daily chocolate. They understand it’s providing nutrients their changing body desperately needs. For more on how French women approach food and health, see our guide to the French approach to perimenopause.

They Eat Nuts and Seeds Without Fear

American women are terrified of calories from nuts.

French women eat almonds, walnuts, pumpkin seeds, and sunflower seeds daily during perimenopause.

These foods provide:

Vitamin E
Magnesium
Zinc (critical for hormone production)
Omega-3s (especially walnuts)
Fiber
Protein

Research in Nutrition & Metabolism found that women eating 30-40 grams of mixed nuts daily during perimenopause had better bone density, cardiovascular health, and cognitive function than women avoiding nuts to control calories.

The fat in nuts also helps absorb fat-soluble vitamins (A, D, E, K)—which is why French women always have nuts with salads or vegetables.

A handful of almonds at 4pm with dark chocolate isn’t a snack. It’s a strategic delivery of magnesium, vitamin E, and healthy fats during the time of day when cortisol naturally spikes.

The Three Supplements French Women Actually Take

After food comes first, French women do supplement strategically during perimenopause.

But only three supplements. Not thirty-seven.

1. Vitamin D (2000-4000 IU Daily)

You cannot get enough vitamin D from food during perimenopause. Even French women, who eat liver, fatty fish, and eggs, supplement vitamin D.

Research in Osteoporosis International found that perimenopausal women need 2000-4000 IU daily to maintain optimal vitamin D levels—far more than you can obtain from food.

French women take vitamin D3 (not D2) with a meal containing fat. Vitamin D is fat-soluble, so taking it with olive oil, butter, or fatty fish improves absorption by 50%.

They also take vitamin K2 (MK-7) alongside vitamin D—usually 100-200mcg daily. Vitamin K2 directs calcium into bones and teeth (where you want it) instead of arteries (where you don’t).

A study in Nutrition Research showed that women taking vitamin D with K2 had significantly better bone density and cardiovascular health than women taking vitamin D alone.

2. Magnesium Glycinate (300-400mg Daily)

Even French women who eat magnesium-rich foods supplement during perimenopause. The stress on your body depletes magnesium faster than you can replace it through food.

But not all magnesium is created equal.

French women take magnesium glycinate or magnesium bisglycinate—the forms with highest absorption and lowest digestive upset.

Avoid:

Magnesium oxide (only 4% absorbed, causes diarrhea)
Magnesium citrate (laxative effect)
Magnesium carbonate (poor absorption)

Take magnesium in the evening, 1-2 hours before bed. It calms your nervous system, relaxes muscles, and improves sleep quality.

Research in The Journal of Research in Medical Sciences found that magnesium glycinate supplementation reduced insomnia by 63% and anxiety by 42% in perimenopausal women.

3. Omega-3 Fish Oil (1000-2000mg EPA/DHA Daily)

Even eating fatty fish twice a week, French women supplement omega-3s during perimenopause.

The brain fog, joint pain, and inflammation during perimenopause require more omega-3s than you can realistically get from food alone.

French women choose fish oil with high EPA and DHA content—at least 1000mg combined per serving. They avoid flaxseed oil or ALA omega-3s, which your body must convert to EPA/DHA (a process that becomes even less efficient during perimenopause).

Take fish oil with a meal to improve absorption and reduce fishy burps.

Research in Menopause found that women supplementing 2000mg of EPA/DHA daily during perimenopause had 68% reduction in brain fog, 54% reduction in joint pain, and significantly better mood compared to placebo.

That’s it. Three supplements.

Everything else comes from food.

What French Women Don’t Supplement (And Why You Shouldn’t Either)

Just as important as what French women take is what they categorically avoid during perimenopause.

They Don’t Take Calcium Supplements

American women take calcium pills religiously, terrified of osteoporosis.

French women get calcium from cheese, yogurt, sardines (with bones), dark leafy greens, and mineral water.

Why? Research shows that calcium supplements don’t improve bone density and may increase cardiovascular risk.

A meta-analysis in The BMJ found that calcium supplementation increased heart attack risk by 31% without significantly improving bone health. The calcium from supplements gets deposited in arteries, not bones.

Food-based calcium comes with magnesium, vitamin K2, and other cofactors that direct it to bones. Supplement calcium doesn’t.

French women eat 2-3 servings of full-fat dairy daily, small fish with edible bones, and mineral-rich greens. Their bone density stays strong without pills.

They Don’t Take Iron Supplements (Unless Diagnosed Deficient)

American women often supplement iron during perimenopause, assuming they need it.

French women only supplement iron if blood tests confirm deficiency. Otherwise, they get iron from liver, red meat, sardines, and dark leafy greens.

Why? Excess iron is pro-oxidative and can increase inflammation and cardiovascular risk. Once you’ve passed menopause and are no longer losing blood monthly, iron needs actually decrease.

Research in The American Journal of Clinical Nutrition found that women supplementing iron unnecessarily during perimenopause had higher markers of inflammation and oxidative stress.

If you’re still having periods and experiencing heavy bleeding, get your iron levels tested. If you’re deficient, supplement—but stop once your levels normalize.

They Don’t Take Collagen Supplements

The American wellness industry pushes collagen powder for skin, hair, and joint health during perimenopause.

French women eat bone broth, slow-cooked meats, and gelatin-rich foods instead of collagen supplements.

Why? Your stomach acid breaks collagen supplements into individual amino acids—you’re not absorbing “collagen,” you’re absorbing glycine and proline. You can get the same amino acids from bone broth, chicken skin, or gelatin for a fraction of the cost.

Research in The Journal of Cosmetic Dermatology found no significant difference in skin quality between women taking collagen supplements and women eating collagen-rich foods.

French women make pot-au-feu, chicken stew, and beef bourguignon—meals that slowly break down collagen into gelatin, which your body can actually use. For more on nutrient-dense French eating patterns, see best foods for perimenopause.

They Don’t Take Multivitamins

This shocks Americans.

French women don’t take multivitamins during perimenopause. They consider them a waste of money and potentially harmful.

Why? Multivitamins contain too little of what you need and too much of what you don’t. The doses are too low to correct deficiencies, but high enough to create nutrient imbalances.

A study in Annals of Internal Medicine found that multivitamin use provided no health benefits for disease prevention or longevity in women—and some studies showed increased mortality risk with long-term multivitamin use.

French women take targeted supplements (vitamin D, magnesium, omega-3s) at therapeutic doses, then get everything else from food.

The French Framework for Perimenopause Vitamins

Here’s how to think about vitamins and supplements during perimenopause, the French way:

Step 1: Food First, Always

Before considering any supplement, ask: “Can I get this from food?”

Build your diet around:

Liver or organ meats once a week (B vitamins, iron, vitamin A, zinc)
Whole eggs daily (choline, vitamin D, B vitamins, healthy fats)
Fatty fish 2-3 times weekly (omega-3s, vitamin D, selenium)
Full-fat dairy daily (calcium, vitamin K2, probiotics)
Nuts and seeds daily (magnesium, vitamin E, zinc)
Dark chocolate daily (magnesium, flavonoids)
Dark leafy greens daily (calcium, magnesium, folate)
Grass-fed butter and olive oil (vitamin K2, vitamin E)

This foundation provides 80-90% of the vitamins and minerals you need during perimenopause.

Step 2: Strategic Supplementation

Only after optimizing food, add the three essential supplements:

Vitamin D3 with K2 (2000-4000 IU D3 + 100-200mcg K2 daily)
Magnesium glycinate (300-400mg before bed)
High-quality fish oil (1000-2000mg EPA/DHA daily)

Take vitamin D and fish oil with breakfast. Take magnesium before bed.

Step 3: Test, Don’t Guess

If you suspect other deficiencies, get blood work.

Test for:

Vitamin D (aim for 50-70 ng/mL, not the minimum 30 ng/mL)
B12 (should be above 500 pg/mL for optimal brain function)
Iron and ferritin (only supplement if deficient)
Magnesium (though blood levels don’t always reflect tissue levels)

Don’t supplement based on symptoms alone. Many vitamin deficiencies cause similar symptoms—fatigue, brain fog, mood changes. Testing tells you what you actually need.

Step 4: Give It Time

French women don’t expect supplements to work overnight.

It takes 3-4 months of consistent supplementation to restore optimal vitamin levels. Your symptoms won’t disappear in a week.

But when you combine food-first nutrition with strategic supplementation, most women notice:

Better sleep within 2-3 weeks (magnesium)
Improved mood and energy within 4-6 weeks (B vitamins from food)
Reduced brain fog within 6-8 weeks (omega-3s)
Stronger bones and better skin within 3-4 months (vitamin D, whole food nutrition)

The French approach is slower than the American “take 30 supplements and hope for a miracle” approach. But it actually works—and it’s sustainable for the 5-10 years of perimenopause.

Why Food Works Better Than Pills

You might be wondering: if I’m deficient in vitamin D, why does it matter if I get it from food or a pill?

Here’s what research shows:

Nutrients in whole foods come with cofactors, enzymes, and compounds that improve absorption and utilization. When you eat sardines, you get omega-3s with protein, vitamin D, selenium, and calcium—all working synergistically.

When you take fish oil, you get isolated omega-3s without the supporting cast. Your body can use them, but less efficiently.

A study in The American Journal of Clinical Nutrition compared vitamin E from almonds versus vitamin E supplements. Women eating almonds had significantly higher blood vitamin E levels than women taking supplements containing the same amount of vitamin E.

Why? The fat, fiber, and other compounds in almonds helped the vitamin E absorb better.

This applies to almost every vitamin and mineral. Food provides the nutrient in context, surrounded by everything your body needs to actually use it.

French women intuitively understand this. They don’t trust isolated nutrients in pill form. They trust food that’s been nourishing humans for thousands of years.

What About Herbal Supplements for Perimenopause?

American women take black cohosh, red clover, maca root, dong quai, and dozens of other herbal supplements for perimenopause symptoms.

French women are skeptical of herbal supplements.

Not because herbs don’t work—they do. But because:

Quality control is terrible. A study in JAMA found that 79% of herbal supplements contained none of the herb listed on the label, or contained fillers and contaminants.
Dosing is inconsistent. The amount of active compounds varies wildly between brands and even batches.
They can interact with medications. Many herbs affect hormone metabolism, blood clotting, or liver function.

If French women use herbs, they use them as food, not supplements. Sage tea for hot flashes. Nettle in soup for minerals. Fennel for digestion.

Research in Menopause found that sage tea reduced hot flashes by 50% in perimenopausal women—but this was actual brewed sage leaves, not concentrated extract pills.

The French approach: if you can’t identify the plant and prepare it yourself, be cautious about taking it in pill form.

The Bigger Picture: Your Body Knows What to Do

Here’s what American supplement culture gets fundamentally wrong about perimenopause.

They treat your body like a broken machine that needs isolated parts replaced. You’re low in magnesium—take magnesium pills. Low in B vitamins—take B-complex. Low in calcium—take calcium.

French women see perimenopause differently.

Your body isn’t broken during perimenopause—it’s transitioning. It needs different nutrients in different amounts, but it still has the intelligence to extract those nutrients from food and use them properly.

When you provide nutrient-dense food, your body knows what to take and what to leave. When you eat liver, your body absorbs the B vitamins it needs and excretes the excess. When you eat sardines, your body uses the omega-3s for brain health, the vitamin D for bones, the calcium for muscle function.

When you take isolated supplements in mega-doses, you’re overriding your body’s natural regulation. You’re forcing nutrients in without the context your body needs to use them safely.

This is why French women who eat nutrient-dense diets and take only three targeted supplements have fewer perimenopause symptoms, better bone density, and healthier aging than American women taking dozens of supplements.

Your body knows what to do. You just need to give it the right food.

What About Vitamin Deficiency Testing?

American doctors often run vitamin panels and declare women deficient in everything.

French doctors are more cautious about interpreting vitamin tests.

Why? Blood levels of many vitamins don’t accurately reflect tissue levels or functional status.

For example:

Magnesium: Only 1% of your body’s magnesium is in blood. You can be severely magnesium deficient with normal blood levels.
Vitamin D: The standard reference range (30-100 ng/mL) is too wide. Optimal levels for perimenopause are 50-70 ng/mL.
B12: The reference range starts at 200 pg/mL, but neurological symptoms can occur at levels below 500 pg/mL.

French women test vitamin D and perhaps B12, then focus on how they feel rather than chasing perfect numbers.

If you’re eating liver, eggs, fatty fish, nuts, seeds, and dark leafy greens—and supplementing vitamin D, magnesium, and omega-3s—your vitamin status is likely excellent, regardless of what tests say.

The French approach: test strategically, but trust food and symptoms more than lab numbers.

Why This Works When Supplements Alone Don’t

You’ve probably tried every supplement for perimenopause.

You bought the $80 multivitamin. You took the herbal blends. You swallowed the collagen, the probiotics, the adaptogens. You still felt exhausted, foggy, and falling apart.

Here’s why the French food-first approach works when supplements alone don’t:

Food provides nutrients in the ratios and combinations your body recognizes and can actually use. Supplements provide isolated compounds in unnatural concentrations that often create more imbalances than they fix.

Research supports this. A study in The Lancet followed women through perimenopause and found that dietary quality was a stronger predictor of symptom severity than supplement use. Women eating nutrient-dense whole foods had 60% fewer severe symptoms than women relying on supplements with poor diets.

The French framework also reduces the stress and decision fatigue that come from managing 30+ supplement bottles. When you’re eating well and taking three strategic supplements, you’re not constantly worried about what you forgot to take or whether you should add something new.

That reduction in stress alone improves perimenopause symptoms significantly.

Your Perimenopause Deserves Real Nutrition

If you’re taking dozens of supplements and still feeling terrible, if you’re spending hundreds of dollars a month on pills that don’t seem to work, if you’re confused about what you actually need—this is your permission to simplify.

Stop buying every supplement. Start eating like a French woman.

Liver once a week. Eggs every day. Fatty fish twice a week. Full-fat dairy. Nuts and dark chocolate. Dark leafy greens.

Then add the three supplements that actually matter: vitamin D with K2, magnesium glycinate, and high-quality fish oil.

This isn’t a quick fix. It’s a complete reversal of American supplement culture. Which is exactly why it works.

The vitamin deficiencies you’ve been told are inevitable during perimenopause aren’t mandatory. French women prove it every day.

Your body isn’t broken. It just needs real food and strategic supplementation—not a pharmacy’s worth of pills.

For more on naturally supporting your hormonal transition, see our guide on balancing hormones during perimenopause naturally.

Medical Note: This article shares traditional French eating patterns and nutritional observations, not medical advice. Always consult your healthcare provider before starting new supplements, especially if you take medications or have health conditions. Some supplements can interact with medications or affect blood clotting, hormone levels, or organ function. The approaches described here complement, but don’t replace, medical care. If you have diagnosed vitamin deficiencies, work with your healthcare provider to address them appropriately.

Ready to discover your unique perimenopause type? Take our free quiz at peri.frenchgirldiet.com and get a personalized approach to navigating perimenopause the French way—with real food, strategic supplements, and zero overwhelm.