GrassRoots Functional Medicine

GrassRoots Functional Medicine We help patients uncover the root cause of chronic symptoms through advanced functional testing, personalized protocols, and comprehensive wellness programs.

Located in West Lebanon, NH. Serving NH, VT, and beyond, we help you reclaim your health. Seth Osgood is a Board Certified Family Nurse Practitioner and a Certified Practitioner through the Institute of Functional Medicine. He has helped people from around the world identify the root causes of complex health conditions while working at Austin UltraHealth the clinic of Dr. Amy Myers. His true passi

on is helping individuals to build a life that revolves about physical, emotional, and spiritual well being. He is blessed with a beautiful wife and four amazing children.

08/28/2026

Ferritin of 14. Four doctors. Four "normal" labs.

She was 46, autoimmune thyroid disease, vegan for ten years — and she sat in my office apologizing for crying.

Here's what nobody told her: autoimmune disease raises the bill. Your immune system runs hot around the clock, burning through raw materials, and almost nobody adjusts what's coming in to match. Menopause doesn't end that. The burn doesn't stop.

And you don't build blood from iron. Step one is glycine, an amino acid concentrated in animal protein. Iron gets added at the end — which is why iron alone so often does nothing.

Ten years of a diet that's fine for most people. She wasn't most people.

Ask what your ferritin number was. Not whether it was "normal."

Drop your ferritin number in the comments. I want to see how many of you are sitting under 30 and were told you were fine.

08/21/2026

They called it anxiety at forty-two. Nobody once said the word perimenopause.

And you've never been an anxious person — anyone who knows you would say that. Now your heart is pounding at three in the morning, you walked out with a prescription in under ten minutes, and nobody asked why it started this year.

Anxiety is real. Sometimes medication is exactly the right answer, and I'm not arguing that. I'm asking why now.

Here's how it works. Progesterone is your calming hormone. Your body converts it into something called allopregnanolone, and that's the piece doing the actual calming — it pushes on the same brake pedal in your brain that anti-anxiety medication pushes on. In perimenopause, progesterone drops first, and it drops hard. Same life. Same stress. Weaker brake. And now it feels like panic.

That's not you becoming an anxious person. That's you losing your brake.

Here's how you find out for free, starting tonight. Every time it hits, write down the date. Just the date. Do that for two cycles, then look at where those dates land. If they're stacking up in the week or two before your period, that isn't a coincidence.

Now you're not walking in saying "I feel anxious." You're walking in with a pattern.

At your next appointment, say this: "Did my anxiety start, or change, at the same time as my sleep or my cycle?"

Send this to whoever got handed a prescription and never got asked why now.

— Dr. Seth Osgood

08/20/2026

Hysterectomy but kept your ovaries? They said six weeks. It's been two years.

The bleeding stopped. Nothing else did. You're exhausted, you're not sleeping, and you feel ten years older than the day you walked in. You've stopped bringing it up, because the thing they said would fix it is already gone.

Here's what nobody explained before you signed. Your ovaries have two blood supplies — one down from the aorta, one across from the uterus. Take the uterus out and one of those roads goes with it. Your ovaries are still there. They're just running on less, and in a lot of women the uterine side was carrying most of the load.

Duke followed over eight hundred women. Those who kept both ovaries were roughly twice as likely to have them fail — menopause three to four years early. How much is the surgery versus the condition that put you in the operating room isn't settled. The risk shows up either way.

And the one signal that would have warned you — your cycle changing — was surgically removed. So somebody has to go look on purpose.

At your next appointment, say this: "My ovaries were left in. Has anyone actually checked whether they're still working?"

— Dr. Seth Osgood

08/18/2026

HRT not working perimenopause menopause — if hormone therapy helped some of it and not all of it, that is not a failure and it is not in your head. A group of gut bacteria called the estrobolome metabolizes your estrogen and determines how much gets used versus recycled - which is part of why two women on the same dose can have completely different results. It isn't on a standard hormone panel.

Tomorrow, 7pm EST, live and free: how your gut, your hormones, and your metabolism are actually connected, the tests that find root causes when standard labs come back "normal," and what to do about it. 45 minutes.

Webinar Registration: https://go.grassrootsfunctionalmedicine.com/metabolic-reset-webinar-972760

I'm Dr. Seth Osgood. This is the stuff your doctor didn't have time to explain. Follow along.


Tomorrow at 7 PM EST. Don’t miss this one.You wouldn’t believe how many women are told “your labs are normal”—yet still ...
08/18/2026

Tomorrow at 7 PM EST. Don’t miss this one.

You wouldn’t believe how many women are told “your labs are normal”—yet still feel exhausted, foggy, and stuck in a body that doesn’t feel like theirs.

There’s a reason you may still feel off, even when your labs say everything is “normal.”

Join us for a FREE 45-minute live webinar where we’ll break down what may be getting overlooked and what you can do about it.

📅 Tomorrow, Wednesday, Aug. 19
⏰ 7 PM EST
🎟️ Free registration

Last chance to reserve your spot → Registration link in first comment below.

Mark your calendar: Wednesday, 7PM EST. You don't want to miss this one. You wouldn't believe how many women hear "your ...
08/16/2026

Mark your calendar: Wednesday, 7PM EST. You don't want to miss this one. You wouldn't believe how many women hear "your labs are normal" and still feel exhausted, foggy, and stuck in a body that doesn't feel like theirs. 🙋‍♀️

Free live webinar. 45 minutes. Real answers.
📅 Wed, Aug 19 · 7 PM EST
🔗 Reserve your free spot → link in first comment below

🚨 Told your labs are "normal" — but you don't feel like yourself?If you're a woman in your 40s or 50s dealing with weigh...
08/14/2026

🚨 Told your labs are "normal" — but you don't feel like yourself?

If you're a woman in your 40s or 50s dealing with weight that won't budge, brain fog, exhaustion, or hormones that feel like they've gone sideways, this free live webinar is for you.

Dr. Seth Osgood (DNP, FNP-BC, IFM-CP), founder of GrassRoots Functional Medicine, is walking through exactly why so many women over 40 keep hearing "everything looks fine" while still feeling anything but — and what actually helps.

In 45 minutes, you'll learn:
✅ The real mechanism behind midlife weight gain, brain fog, and exhaustion
✅ The lab tests most doctors never order
✅ What's actually been working for women stuck in this exact spot

🗓️ Wednesday, August 19 · 7 PM EST
💻 100% free, live Q&A included

🔗 Reserve your free spot → registration link in first comment below

6,000 women cross into menopause everyday in the U.S.The average physician spends 7 minutes addressing it.If you're a wo...
08/11/2026

6,000 women cross into menopause everyday in the U.S.

The average physician spends 7 minutes addressing it.

If you're a woman over 40 looking for answers to unexplained weight gain, exhaustion, or hormone changes, this is for you.

You've done the blood work.

You've been told everything is "normal."

But if everything is normal... why don't you feel normal?

What if the answers you've been looking for simply aren't included in routine lab work?

Join Dr. Seth Osgood for a FREE 45-minute live webinar, where he'll explain why many women continue to experience these frustrating symptoms despite being told their lab results are "normal."

You'll discover:

• Why routine lab tests don't always reveal the full picture
• Five commonly overlooked lab tests worth understanding
• How gut health can influence your hormones, metabolism, and energy

Reserve your free spot using the link in bio.

📅 Wednesday, August 19
🕖 7 PM EST

🎥 FREE Live Webinar
🎤 Live Q&A
🔁 48-hour Replay Available

08/09/2026

GLUTEN-FREE FOMO? Not today. 😏

We’re wrapping up an incredible conference in Park City, Utah, and I’ll admit it: eating gluten-free can sometimes come with a price tag… and I’m not just talking about the extra $3 for the bread. 😂

Sometimes you give up a little flavor, a little texture, and a little of the “damn, that was good” factor.

Not today.

We stopped at Harvest in downtown Park City and this meal absolutely delivered:

☕ Golden milk
🍌 Paleo banana bread
🥗 A Buddha bowl loaded with goodness

Fresh. Local. Ridiculously good. And proof that eating in a way that makes you feel good doesn’t have to mean eating boring food.

Currently feeling my best… and also extremely full. 😂

Now I want to hear from you: Have you ever tried golden milk? Did you notice any difference in how you felt—or are you still wondering what the hype is about?

And for my Park City people: what’s the ONE restaurant we can’t leave town without trying? 👇

08/09/2026

Blood sugar in perimenopause? A 10-minute walk right after eating did more than a 30-minute walk later on.

Peak glucose 164 vs 182 mg/dL. Same food, same day. It wasn't the length of the walk that mattered — it was how soon it started.

This is part 2 to the estrogen video, and it covers three moves that steady blood sugar in perimenopause without changing anything about what you eat. The third is the only one that changes the trajectory rather than just the afternoon.

— Dr. Seth Osgood


Address

West Lebanon, NH
03784

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 3pm

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