Dr Fiona McCulloch ND

Dr Fiona McCulloch ND Get the newest research on natural women's health, and PCOS!

I write about science-based natural medicine for women and I've been practicing in Toronto for 21 years. My undergraduate degree focused on molecular biology and genetics and my approach blends science with modern clinical nutrition. Most of all, women are the heroines of their own health journeys - it's my greatest honour to act as a guide along this path.

09/15/2026

🧠Brain fog in perimenopause has a common cause that many attribute simply to hormones.

Correcting this issue can improve energy, stamina, cognition and so much more!

Dr. Briden is the best-selling author of the Period Repair Manual and the Hormone Repair Manual which discusses this in detail.

Stay tuned for more excerpts from our conversation. We covered many different topics including PCOS/PMOS, periods, perimenopause, and more.

The full conversation will be posted on Youtube soon.

⁉️Have you experienced these changes in your cycle and bleeding or brain fog? What solutions worked for you?

🔬PCOS / PMOS has long been under-researched. Given that PCOS impacts 1 out of every 10 women, increasing risks for heart...
09/11/2026

🔬PCOS / PMOS has long been under-researched. Given that PCOS impacts 1 out of every 10 women, increasing risks for heart disease, diabetes and other chronic conditions it definitely gets less focus than it should.

🩵Since September is PMOS / PCOS Awareness Month, I’m sharing a few of the studies on PCOS from the past year. We are gradually learning more 🩵

In fact, this year there were some big ones, including the name change from PCOS to PMOS. 💡Finally, the metabolic elements of PCOS are gaining recognition with the new name.

And, more details on subtypes and the different mechanisms that create the symptom pictures that we see in PMOS.

📝This data also allows us some insight into the endocrine, non-metabolic elements of this complex condition. Not all PCOS is the same.

Being in practice for over 25 years and having the condition myself has taught me that PMOS often changes over the lifespan and varies significantly between patients.

💖I’m so happy to see the research finally digging into the details and mysteries of PCOS.

❓Which study did you find the most interesting?

09/08/2026

✨A conversation with Lara Briden about hormones and so much more.

This excerpt is about the naturally dynamic luteal phase, & the reasons it causes many different symptoms!

🙋🏻‍♀️This time of the cycle is definitely a challenge for our physiology.

❓Do you have any questions or comments about the luteal phase? Post them below!

🎙️check out Dr. Briden’s recent podcast on “How To Make Friends With Your Luteal Phase”, and her 3 books : period repair manual, hormone repair manual, and metabolism reset for women.

And, stay tuned for more excerpts from our conversation.

I absolutely loved having a casual geek out session with one of the NDs I admire the most!

We covered many different topics including PCOS/PMOS, periods, perimenopause, and more.

🎥The full conversation will be posted on Youtube soon!

💖This week I was able to hang out with the amazing Lara Briden a longtime friend, author and fellow naturopathic doctor...
06/14/2026

💖This week I was able to hang out with the amazing Lara Briden a longtime friend, author and fellow naturopathic doctor!

You probably already know Dr Briden’s 3 bestselling books:

✨The Period Repair Manual
✨The Hormone Repair Manual
✨The Metabolism Repair Manual

🏃🏻‍♀️If you have not read these yet …you need to run and do that asap!

We were planning to have a lunch together and catch up …but at the last minute we decided to record a conversation at White Lotus Clinic (my clinic) to answer some of your questions 🥰

📚Lara is one of the most intelligent people I have ever met… her genuine curiosity and passion for understanding biology are woven all through her writing and our convo.

I’ll be posting our conversation on YouTube and some reels here over the next while …stay tuned ❤️

🔔As of today, PCOS has been officially renamed to PMOS!The new acronym stands for ✨Polyendocrine Metabolic Ovarian syndr...
05/12/2026

🔔As of today, PCOS has been officially renamed to PMOS!

The new acronym stands for ✨Polyendocrine Metabolic Ovarian syndrome✨

💖This includes the fact that PCOS is often a metabolic condition that is lifelong and impacts the entire endocrine system, which is wonderful

The name itself being focused on cysts has certainly been confusing and incorrect for a very long time.

⚠️That being said, a different acronym may create more confusion. Even though the old name was not accurate, I was not for the acronym change as PCOS/PCOM . The debate included changing the name to one that was more accurate but with the same acronym (PCOS) so it would continue to be recognized.

🤔also, we don’t fully understand the different subtypes of PCOS (yet).
For example: not everybody with PCOS has insulin resistance

😬it also sounds a lot like PMS!

⬇️What do you think?

05/11/2026

✨PCOS without Insulin Resistance aka “Lean” PCOS. Which treatments can help?

⬇️Share your experience below or ask a question!

05/07/2026

🧐Is natural progesterone always better than synthetic progestins for PCOS?

It is important to understand the differences before you decide. Not covered here: synthetic progestins also work as birth control whereas natural progesterone can often enhance fertility.

⬇️Do you have any questions about progesterone or experiences to share? Add them below!

12/01/2025

🥴Starting progesterone and having side effects? Why it can often be a bumpy start (especially if you have high estrogen levels) and what to expect over time!

It’s important to note that some people aren’t ever able to tolerate progesterone but this isn’t as common as the situation I describe here.

11/30/2025

☝️Hear these stories every day

🦋PCOS and Hypothyroid (Low Thyroid Function) have a lot of similar symptoms! 👭To make things even more confusing, it’s c...
04/10/2024

🦋PCOS and Hypothyroid (Low Thyroid Function) have a lot of similar symptoms!

👭To make things even more confusing, it’s common to have both of these conditions.

Many studies have found that patients with PCOS have a much higher incidence of thyroid disease - around 22% of patients with PCOS have Hshimoto’s thyroiditis - an autoimmune condition that affects the thyroid.

⭐️Both PCOS and thyroid conditions affect the metabolism and can be linked to inflammation which is why there is so much overlap between them

But, it’s very possible to differentiate between them - swipe through the slides to see the differences in symptoms between the two, and lab tests for each condition.

⁉️Got any questions about PCOS or Thyroid? Ask me below and I’ll do my best to answer!

Address

121 Willowdale Avenue, Suite 301
Toronto, ON
M2N6A3

Opening Hours

Thursday 9am - 7pm
Friday 9am - 7pm
Saturday 9am - 5pm

Website

Alerts

Be the first to know and let us send you an email when Dr Fiona McCulloch ND posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Featured

Share

Category