Biohacking with Brittany

Your body after a baby was never a calorie problem. It is a metabolic one. In this Her Stack episode I am walking you through exactly how to restore your metabolism so body composition follows. The goal is not weight loss. The goal is metabolic restoration. Body comp is downstream.
I am breaking down the four drivers that actually run body composition (insulin, thyroid, sleep, growth hormone), the four pillars to address them (nutrition, lifestyle, supplements, peptides), and the exact peptide sequencing for women. Plus my honest take on GLP-1s including semaglutide, tirzepatide, and retatrutide, where they actually fit, and why microdosing makes more sense than chasing the scale.
I also share what nobody talks about. Eating less postpartum often makes body composition worse. Breastfeeding is sequencing, not failure. Growth hormone is the layer women never hear about, so they plateau and blame their age when it was a fixable signal the whole time.
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
 
I TALK ABOUT:
00:00 Welcome back to the Her Stack series
00:53 Updates: working with me one-on-one and my new peptide planner
06:15 Why body composition not weight, and why metabolism not calories
07:01 The four drivers and four pillars framework
09:00 Driver 1: Insulin resistance and why stubborn middle fat is an insulin problem, not a calorie problem
11:30 Driver 2: Thyroid, and why TSH alone misses Free T3 (the worker hormone)
14:50 Driver 3: Sleep, cortisol, and the loop back to insulin resistance
19:32 Driver 4: Growth hormone, the layer nobody talks about that's blunted postpartum and through aging
22:19 The labs to actually ask for: fasting insulin, Free T3, IGF-1, DHEA-S, plus a 2-week CGM
24:30 Pillar 1: Nutrition (protein floor of 120g, leucine at every meal, food order, fiber, and why you should NOT under-eat)
28:06 Why leucine flips the muscle-building switch
35:00 Pillar 2: Lifestyle and biohacking (lift 3x a week, walk 7-10k steps, zone 2, cold and heat, red light, and the fringe tier honestly)
45:30 Pillar 3: Supplements (creatine, magnesium glycinate, myo-inositol, omega-3, berberine, and breastfeeding sequencing)
51:01 Berberine, AMPK, and "nature's metformin"
55:30 Pillar 4: The peptide stack starts here with AOD-9604
56:00 AOD-9604, the growth hormone fragment, why I am personally taking it right now
01:02:00 MOTS-c, the "exercise in a molecule" mitochondrial peptide
01:05:00 5-Amino-1MQ and releasing the brake on fat cells
01:07:00 Sermorelin, the gentle GH entry (what a secretagogue actually is)
01:10:00 CJC-1295, Ipamorelin, and Tesamorelin for post-weaning GH restoration
01:13:00 The GLP-1 honest take: semaglutide, tirzepatide, and the retatrutide question
01:14:00 Why retatrutide is called the triple agonist and where it fits (and where it doesn't)
01:19:27 Recap and wrap-up
 
RESOURCES:
Work with me one-on-one on your peptide stack and protocol.
The Her Stack Planner, the first peptide tracking journal built around female biology.
Free Peptide Masterclass for Women.
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
 
LET'S CONNECT:
Instagram, TikTok, Facebook
Shop my favorite health products
Listen on Spotify, Apple Podcasts, YouTube Music

In this Q&A episode of the Her Stack Series, I'm answering the peptide questions you're asking me every single day in my DMs and comments: 
→ Can I take peptides while breastfeeding?
→ What if I have a personal or family history of cancer?
→ Why won't my postpartum belly fat budge, even when I'm doing everything "right"?
→ Blends vs. single peptides, which is right for me?
→ How do I build my own peptide stack without ending up on eight injections a day?
I'm unfiltered in this one. I share why there will never be clinical trials on peptides during breastfeeding (and what that really means for you when you're making the decision), the truth about growth hormone, IGF-1, and theoretical cancer risk, and my honest take on why most peptide advice from men completely misses the mark for women.
Join The Mother's Protocol Program for women-specific guidance on peptides, hormones, and longevity.
I TALK ABOUT:
00:00 — Welcome + episode intro
00:53 — Doors close Sunday: The Mother's Protocol Program
06:51 — A personal moment: new beginnings
09:07 — Q1: Can I take peptides while breastfeeding?
20:48 — Q2: Do peptides cause cancer? (BPC-157, growth hormone, IGF-1)
26:16 — Q3: Stubborn postpartum weight (MOTS-c, AOD 9604)
30:39 — Q4: Blends vs. single peptides (Glow, Wolverine, CJC/Ipamorelin)
33:46 — Q5: How to build your own peptide stack
39:14 — Wrap-up
RESOURCES:
— The Mother's Protocol Program: my 12-week group program for women + mothers. Doors close Sunday, we start Monday June 8.
— Her Stack Planner: my peptide planner for women. Digital available now, physical coming this summer.
— Free Peptide Masterclass replay — available until Sunday.
CONNECT:
Instagram: @biohackingbrittany
Website: biohackingbrittany.com
Next week on the Her Stack Series I'm going deep on body composition — every peptide for weight loss, the nutrition + exercise foundation, and what actually works postpartum, perimenopause, and menopause.

In this Her Stack series episode, I open up about maternal mental health, postpartum anxiety, and the invisible biological load mothers carry long after the six-week checkup is over. This episode is not just for the newly postpartum mother. It is for the mother whose kids are four, eight, fifteen, and still asking herself why she does not feel like herself.
I share why motherhood structurally changes the brain, hormones, and nervous system, and why so many mothers are left feeling anxious, foggy, depleted, or unlike themselves without ever being properly screened or supported. I walk you through the science of the postpartum neurosteroid withdrawal, the gray matter changes that persist for years, and the five-system map underneath maternal brain fog.
Then I break down the full four-pillar protocol I use with my one-to-one clients: foundational nutrition, lifestyle and biohacking tools, the supplement layer including some of the most under-discussed compounds for the maternal brain, and the advanced peptide layer including Semax, Selank, NAD+, and bioregulators.
This is the episode every mother needs. Send it to one.
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
I TALK ABOUT: 
02:00 - My free peptide masterclass for moms next week
04:10 — Why maternal mental health is not just a six-week postpartum issue
06:30 — The numbers every mother should know (and the screening gap that explains everything)
08:20 — How pregnancy structurally changes the brain (Nature Neuroscience, 2017)
11:40 — The neurosteroid withdrawal nobody warned you about, and the FDA's $34,000 drug that proves it is real
13:50 — Pillar 1: DHA, protein, ferritin, blood sugar stability, and methylated Bs for the maternal brain
22:40 — Pillar 2: Protected sleep cycles, morning sunlight, vagal nerve activation, and red light to the brain
28:00 — Yoga nidra and NSDR as the workaround for mothers who cannot engineer a protected sleep cycle
32:45 — Simplifying routines, meals, outfits, and planning to reduce mental load
35:00 — Co-regulation: Why one hour of real adult conversation is medicine
38:40 — Creatine for maternal mental health, depression support, and cognitive fatigue in sleep-deprived moms
40:50 — Saffron and inositol for postpartum mood, anxiety, racing thoughts, and the "can't shut off the brain" symptoms
42:15 — Magnesium L-threonate, glycine, vitamin D, and low-dose methylene blue for sleep, brain fog, mitochondrial support, and nervous system balance
45:25 — Why peptides are an advanced layer and should come after nutrition, lifestyle, and supplement foundations
46:10 — Semax and Selank for anxiety, cortisol support, BDNF, dopamine, brain fog, memory, and maternal brain support
50:00 — NAD+ and bioregulators (Cortagen, Cerluten, Epithalon) for maternal energy, neuronal support, circadian rhythm, melatonin, sleep, and long-term brain health
58:15 — Why postpartum anxiety and depression need different kinds of support, and why SSRIs work for some mothers and not others
1:00:00 — Why lingering symptoms matter and which labs mothers should check
RESOURCES:
Labs to ask your provider for: TSH, free T3, free T4, reverse T3, ferritin, vitamin D, DHA panel
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
Free Peptide Masterclass for Moms: Join the waitlist for the next live class.
The Her Stack Planner: The first peptide tracking journal built around female biology.
Crisis support: 988 in the US, 988 in Canada
PRODUCTS MENTIONED:
Supplements
DHA (omega-3)

Creatine monohydrate

Saffron (Crocus sativus extract)

Inositol (myo + d-chiro blend)

Glycine

Magnesium L-threonate (BiOptimizers code: BIOHACKINGBRITTANY)

Vitamin D

Lion's mane mushroom

Bacopa monnieri

Methylated B vitamins (methylcobalamin, methylfolate, P5P)

Methylene blue (low dose, pharmaceutical USP only)

Peptides
Semax

Selank

NAD+ options
NOVOS code: BIOHACKINGBRITTANY

Nuchido TIME+ code: BIOHACKINGBRITTANY

Nasal spray (Synchronicity Health code: BIOHACKINGBRITTANY)

Bioregulators
Cortagen

Cerluten

Epithalon

LET'S CONNECT:
Instagram, TikTok, Facebook
Shop my favorite health products
Listen on Spotify, Apple Podcasts, YouTube Music

Dr. Stephanie Venn-Watson, veterinary epidemiologist, public health scientist, and co-founder of Fatty15 (code: BIOHACKINGBRITTANY), shares the latest science on C15:0, an odd-chain saturated fatty acid she describes as the first essential fatty acid to emerge in over 90 years.
This conversation explores why C15 may be foundational for cellular resilience, metabolic health, liver health, brain development, and long-term vitality. Stephanie explains how low C15:0 levels may contribute to fragile cells, accelerated aging, and modern health issues, and why this nutrient matters not just for adults, but for pregnancy, breastfeeding, babies, and children.
We also talk about food sources like full-fat dairy, cheese, butter, goat and sheep products, why grass-fed matters, how to test your C15:0 levels, and why supplement quality is becoming more important than ever.
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
WE TALK ABOUT: 
00:35 - What C15:0 is and why it's being called the first essential fatty acid in over 90 years 
02:55 - How low C15:0 may contribute to fragile cells and accelerated aging
05:55 - The difference between omega-3s and C15:0 for cell flexibility and resilience
07:20 - Why C15:0 matters during pregnancy, breastfeeding, and infant development
11:20 - The "longevity zone" for C15:0 and what higher levels may indicate
15:10 - Why supplement testing and third-party verification matter
18:30 - How C15:0 compares to other longevity molecules like NAD, metformin, and rapamycin
23:35 - Why C15:0 needs to be consumed regularly through food or supplementation
25:00 - Why vegans and dairy-free women may be at higher risk for low C15:0 levels
26:50 - The best food sources of C15:0, including cheese, butter, and grass-fed dairy
30:10 - Why Fatty15 created gummies for kids and families
37:35 - What we know, and don't know yet, about C15:0 and children's brain health
41:30 - Why the Navy patent may help protect supplement quality and trust
44:30 - How kids are responding to the new Fatty15 gummies
47:50 - Where to learn more, buy Fatty15, and read the research
RESOURCES:
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
Free Peptide Masterclass for Women: Join the waitlist for the next live class.
The Her Stack Planner: The first peptide tracking journal built around female biology.
Fatty15 website (code: BIOHACKINGBRITTANY) and Instagram
LET'S CONNECT:
Instagram, TikTok, Facebook
Shop my favorite health products
Listen on Spotify, Apple Podcasts, YouTube Music

I share my full protocol for skin, hair, and nails, including the nutrition, lifestyle, supplements, skincare, peptides, and bioregulators I am using to support healthier aging.
I also explain why beauty is not just topical. Skin, hair, and nails are deeply connected to estrogen, protein intake, collagen production, inflammation, vascular supply, mitochondrial health, and hormone transitions like postpartum, perimenopause, and menopause.
Listen if you want a female-specific beauty and longevity protocol that goes beyond collagen powder and skincare trends, and helps you understand how to support your skin from the cellular level.
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
I TALK ABOUT: 
00:00 - Why this Her Stack series episode focuses on skin, hair, and nails
08:08 - How estrogen affects skin, hair, nails, collagen, and postpartum hair loss
14:20 - Why protein is the number one beauty nutrition tip for women
19:01 - How collagen, amino acids, and protein powder each support beauty and repair differently
24:34 - How collagen, glycine, proline, and bone broth support skin structure
27:27 - Why resistance training helps activate collagen, growth hormone, and skin repair
32:17 - How red light therapy supports mitochondria, collagen, and hair follicle health
36:45 - My clean skincare routine and how I use peptide serums intentionally
48:45 - Why vitamin C, zinc, copper, and omega-3s matter for skin, hair, and nail health
53:05 - Why GHK-CU, BPC-157, Melanotan 1, and bioregulators can support skin, hair, nails, and tissue repair
RESOURCES:
Join The LongHer Life for women-specific guidance on peptides, hormones, and longevity.
Free Peptide Masterclass for Women: Join the waitlist for the next live class.
The Her Stack Planner: The first peptide tracking journal built around female biology.
Products mentioned in this episode:
KORA Organics skincare
OneSkin OS-01 Eye Topical Supplement (code: BIOHACKINGBRITTANY)
HigherDOSE red light mask and mat (code: BRITTANY15)
Kineon MOVE+ Pro red light for pain (code: BIOHACKINGBRITTANY)
Fatty15 (code: BIOHACKINGBRITTANY)
Vega Sport Vanilla protein
Mindbodygreen Lean & Tone Aminos+
The Ordinary Retinal 0.2% Emulsion
LET'S CONNECT:
Instagram, TikTok, Facebook
Shop my favorite health products
Listen on Spotify, Apple Podcasts, YouTube Music