Katie McKersie
Founder of Holistico. Available for interviews, podcasts and expert comment on vitamin D, calcium and whole food supplements. Email hello@shopholistico.com.
founder
a short bio
Katie McKersie is a Holistic Nutrition Consultant and Functional Diagnostic Nutrition Practitioner, and the founder of Holistico. After years in clinical practice helping clients with acne, eczema, gut and hormone issues, she saw the same problem again and again: synthetic supplements that were not moving the needle on bloodwork. She founded Holistico to create supplements made from real, nutrient-dense whole foods instead of synthetic isolates, and to put testing first, so people supplement based on their own results, not guesswork.
Katie McKersie Founder & CEO, Holistico
topics she can speak to
- Whole food supplements compared with synthetic isolates, and how to read a supplement label
- Vitamin D3 and K2 taken together, and why Holistico sources its D3 from lichen instead of lanolin
- Calcium from eggshell and red algae compared with calcium carbonate
- Testing nutrient status before choosing a supplement
- Third-party testing for heavy metals and microbes, and what a certificate of analysis shows
- Building a supplement brand around whole food ingredients and testing
articles she has written
- Vitamin D3 With K2 Benefits: Why These Two Belong in One Capsule
- What Happens If You Take Vitamin D3 and K2 Every Day?
- Vitamin D From Lichen vs Lanolin: Why We Chose Lichen
- Whole-Food Vitamin D vs Synthetic Vitamin D: Why the Source Matters
- Does a Calcium Supplement Cause Constipation? What to Look For in the Bottle
- Eggshell Calcium: What It Is, and How It Compares to Calcium Carbonate
- Whole-Food Calcium vs Synthetic Calcium: Why the Source Matters
press, podcasts and editors
Email hello@shopholistico.com with your outlet and deadline. We typically respond within 24–48 business hours, and we can send product samples and the full third-party test reports.
