What “Bioidentical” Hormones Actually Are
Bioidentical hormones have the same molecular structure as the hormones your body naturally produces. They are used to support physiology—not override it.
Common bioidentical hormones used in practice include:
- Testosterone
- Progesterone
- Estrogen (estradiol, estrone, estriol)
- DHEA
When used correctly, these hormones help restore balance while addressing underlying root causes.
Testosterone in Women: Why It Matters
Testosterone plays a critical role in women’s health, supporting:
- Libido
- Energy and motivation
- Muscle mass and recovery
- Healing and metabolism
- Egg quality and follicle stability
Dr. Sarah emphasizes daily, low-dose testosterone (via creams or troches) rather than pellets or injections, with the goal always being eventual weaning, not lifelong use.
Progesterone: Timing Is Everything
Progesterone is only produced after ovulation, and incorrect timing can cause more harm than good.
Key points:
- Testing progesterone at the wrong time leads to misdiagnosis
- Taking progesterone too early can suppress ovulation
- “Cycle day 21” testing is not appropriate for everyone
Progesterone should always support the natural cycle—not disrupt it.
When Progesterone Is Helpful
Progesterone may be used when:
- Ovulation isn’t occurring
- Cycles are irregular or absent
- Luteal phase defects are present
- Progesterone is low after ovulation
- Early pregnancy support is needed
Cyclic progesterone can help retrain the body to ovulate and regulate cycles.
Estrogen: Balance Matters
Estrogen is essential for:
- Ovulation
- Energy and brain function
- Uterine lining health
- Pregnancy support
Low estrogen is often misdiagnosed as PCOS. Dr. Sarah explains why estrogen must be tested before and after ovulation and why both low and high estrogen can cause symptoms.
Bioidentical Estrogen: When & How It’s Used
Estrogen may be used when levels are truly low and root causes are addressed at the same time.
Delivery methods include:
- Oral estradiol (micro-dosed)
- Vaginal estrogen (for dryness, UTIs, cervical mucus, microbiome support)
- Patches (often helpful in perimenopause)
The goal is physiologic balance—never excess.
Perimenopause & Hormone “Smoothing”
During perimenopause, estrogen levels can swing dramatically. Low-dose daily estrogen (often via patch) can:
- Reduce brain fog and mood swings
- Improve sleep and energy
- Smooth hormonal fluctuations
Hormone therapy should always have a plan: stabilize, support, then wean.
Root Cause Always Comes First
Hormones are never used in isolation. A complete plan includes:
- Adequate nutrition and calories
- Stress and cortisol support
- Thyroid and adrenal health
- Gut absorption and metabolism
Hormones support healing—they don’t replace it.
Key Takeaways
- Bioidentical hormones match your body’s natural hormones
- Dose, timing, and delivery method matter
- Hormones should make you feel better, never worse
- Testing must match physiology and cycle timing
- Root causes must always be addressed
- Every hormone plan needs an end game
Next Steps
If you’re navigating hormone symptoms, fertility challenges, or perimenopause and want a personalized, physiology-based approach, support is available.