How Ultra-Processed Foods and Added Sugars Influence Mental Health with Dr. David Wiss, PhD (ep – 77)

If counting calories and cutting out “bad” foods haven’t led to lasting change, it may be because nutrition is far more complex than simple math. In this episode, Dr. David Wiss returns for an eye-opening conversation with host Dr. Ginger Hultin that challenges mainstream narratives about weight, willpower, and what “healthy eating” really means.

Together, they unpack why the calorie model continues to dominate despite its limitations, and how it overlooks the roles of neurobiology and lived experience. From the science and controversy of ultra-processed foods to the connection between added sugars, fiber, and mood, this episode offers a refreshingly compassionate and systems-focused approach. If you’re ready to shift away from reductive nutrition advice and gain a better understanding of the social forces that shape eating behaviors, this conversation will leave you feeling informed, empowered, and deeply understood.

In this episode, we’ll cover:

[00:00:00] Count fiber, not calories

[00:00:31] Setting up the calorie + ultra processed food conversation

[00:02:48] Why the calorie model falls short

[00:05:35] What “ultra-processed” really means

[00:08:59] Values-based eating approach

[00:10:54] Added sugar, fiber & mental health link

[00:13:17] When nutrition advice becomes triggering

[00:14:14] Trauma-informed nutrition care

[00:15:41] Final takeaway: let your nutrition evolve

Connect with Dr. Ginger Hultin on Instagram, LinkedIn or her website.

Connect with Dr. David Wiss on Instagram, LinkedIn or Website.

Disclaimer: The material presented in this podcast, is not intended to be a substitute for professional medical advice, diagnosis, or treatment. You should seek the recommendation of a medical professional regarding a medical condition or treatment or before starting a new nutrition and/or health regimen.

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