About David Wiss PhD
Dr. David Wiss is an independent thinker unafraid to challenge the status quo in the nutrition field. Dr. Wiss pioneered the field of nutrition for addiction recovery and is a world-renowned expert in disordered eating. His mental health research bridges gaps between neurological, psychological, behavioral, and nutritional sciences.
Dr. David has treated over 1,000 patients in the last twelve years using a food-positive functional medicine approach through his practice, Nutrition In Recovery. Dr. Wiss has developed innovative methods for using nutrition to improve mental health without feeling like a “diet.” Dr. Wiss believes gut health is the key to brain health and wants to show you how to heal yourself and help your clients.
Services
Dr. David Wiss brings his twelve years of experience as a mental health nutritionist to patients, treatment facilities, institutions, academics, and the press.
Treatment
Individual and family counseling, functional medicine, group facilitation
Consulting
Professional supervision, staff training, expert opinion/quote
Speaking
Academic conferences, podcasts, wellness workshops
Collaboration
Joint efforts on research, statistical analysis, manuscript writing
Research
With over 20 peer-reviewed journal publications, Dr. Wiss is dedicated to disseminating his findings and progressive perspectives at the intersection of nutrition and mental health.
Can intuitive eating be helpful to individuals with ultra-processed food addiction?
Intuitive Eating can be used in conjunction with other treatment modalities as a harm-reduction approach to reduce…
Abstinence-based treatment of comorbid eating disorders and ultra-processed food addiction
The evidence that ultra-processed food addiction exists and is impacting a subset of our clients with disordered…
Low carbohydrate and psychoeducation programs show promise for food addiction: 12-month follow-up
The current data demonstrate the long-term clinical effectiveness of a low carbohydrate “real food” intervention delivered in…
Training
Dr. Wiss is available to provide trainings to your staff or organization on mental health nutrition, addictions, disordered eating, and more.
Podcasts
If you would like to feature Dr. Wiss on your podcast, please send a message and we will gladly discuss a collaboration with you.
Blog
Capturing the larger systemic issues in the field, these blogs point to public health solutions. There exists great opportunity to integrate nutrition into behavioral health.
Ultra-Processed Foods: Why You Can’t Stop Eating Them (and why it’s not your fault)
Institute of Functional Medicine Certified Practitioner: My Journey from RDN to PhD to IFMCP
Nova Institute for Health: Bridging Nutrition, Mental Health, and Social Justice
From The Socials
Tomorrow doesn’t have to feel like a nutritional minefield. After years of working with people navigating the intersection of mental health and food, I’ve learned that the most peaceful holidays happen when we stop performing and start being present.
These aren’t your typical Thanksgiving tips—no “earn your meal” nonsense here. Just real strategies grounded in dialectical thinking and nutrition science to help you stay grounded in YOUR version of dignity.
You’re not broken. You don’t need fixing. You just need permission to show up as you are.
Save this for tomorrow morning when you need the reminder 💜
#thanksgiving #nutritiontips #mentalhealthawareness
Your therapist should know about your sleep. Your doctor should ask about your loneliness. Your psychiatrist should understand nutrition. But they don’t, because we built mental healthcare wrong. Swipe to see what the science actually supports—and what’s been missing from your treatment all along.
#functionalmedicine #mentalwellness #nutritionalpsychology
Your anxiety isn’t “all in your head.”
It’s in your gut microbiome.
It’s in your mitochondria.
It’s in your cortisol rhythm.
It’s in your nutrient status.
And it’s all measurable. Treatable. Potentially reversible.
I’m hosting a FREE webinar on the biology behind stress and treatment-resistant mental health conditions—the fundamental mechanisms that conventional psychiatry rarely tests for.
📅 December 12, 2025, at 12 pm PST
⏱️ 1 hour + live Q&A
You’ll learn:
✅ How stress becomes biologically embedded in your cells and genes
✅ How gut issues can drive anxiety and depression
✅ The neuroscience of food cravings (it’s not willpower)
✅ Which lab tests reveal hidden dysfunction
✅ Evidence-based protocols that actually work
This is for you if therapy and medication haven’t been enough. Let me show you what’s missing.
🔗 Register via link in bio or drop “Webinar” below and I’ll send you the link
#FunctionalMedicine #GutBrainAxis #ChronicStress #HolisticMentalHealth #BiologicalPsychiatry
Sunday morning vibes with Naia and Davina ❤️
Blessed is an understatement 🥰
What happens when we create space for honest conversation? 🤔
On October 23, 2025, in West LA, something remarkable unfolded. Not just another panel—but a true “town hall” where people courageously shared their lived experiences at the intersection of recovery and psychedelic medicine.
The voices that emerged:
* Treatment providers admitting what they see behind closed doors
* Recovery advocates wrestling with their own transformations
* Clinicians sharing both miracles and concerns
What struck me most wasn’t the expertise on stage—it was the vulnerability in the room. People named their truth, even when it challenged conventional recovery wisdom.
We held space for ALL perspectives:
* Those who found healing through plant medicine
* Those who maintain traditional sobriety paths are sacred
* Those still figuring out where they stand
No dogma. No judgment. Just humans exploring together.
What questions are you sitting with around recovery and emerging treatments?
Panelists: @drjoycebraverman @yeshaiablakeney_ @kalenflynnmd @skylightpsychedelics @mistamarcos
Grateful to so many others: @_deanmoses @bobby.gillam @miracleworkher @d.a.wiss @amyquinnlcsw @daveg_limitless @embodiedalchemycoach @mysticvessel_music @leisureproject.co
Leave a comment to let me know what topics to cover at my next event!!! Complex issues only 🫶🏼
The food industry just launched a new “transparency” coalition, and I want you to see what’s actually happening here.
PepsiCo, Coca-Cola, Nestlé, General Mills, Tyson, and Kraft Heinz have formed Americans for Ingredient Transparency (AFIT). They say they want to cut through confusion and ensure clear ingredient information. Sounds good, right?
Those of us who know the playbook aren’t buying it. They’re calling this what it actually is: a coordinated effort to block stricter state food safety laws and prevent future protections from passing.
This is the playbook we’ve been tracking for years—the same strategy Big Tobacco used. When states start passing laws that threaten their business model, they don’t reformulate. They federalize and water down protections under the guise of “uniformity.”
What gets me is the timing. California banned certain additives. West Virginia went after synthetic dyes. More states are proposing ingredient-specific restrictions. And suddenly, industry needs a “transparency coalition” that happens to advocate for federal pre-emption of these state laws?
I’m here to help you see the patterns. The fact that this coalition exists tells us something important: public pressure and state-level action are working. They wouldn’t spend millions on this if it weren’t threatening their bottom line.
Keep asking questions. And don’t fall for PR campaigns dressed up as consumer protection.
California just passed AB 1264, and nobody’s talking about it.
By 2032, schools will phase out “ultraprocessed foods of concern” - foods linked to behavioral issues, metabolic disease, and yes, addiction-like eating patterns in kids.
The food industry has fought this for DECADES. And look, I get it - some nutrition professionals are worried this will create “food fear” or orthorexia. But here’s what they’re missing:
We’re not talking about demonizing foods. We’re talking about a policy that finally acknowledges what the research has been screaming: the food environment matters. Kids’ developing brains are vulnerable. School food accounts for a significant portion of their daily intake.
The bill even bans artificial food dyes by 2027 - substances that have required warning labels in Europe for years, while American kids have been the test subjects.
Here’s the part that gets me fired up: they’re using peer-reviewed science to define which foods are “of concern.” Looking at links to cancer, cardiovascular disease, and behavioral issues. Checking what other countries have already banned. This is evidence-based policy, finally.
But (and there’s always a but) - they’re exempting USDA commodity foods. Which we can unpack another day, regarding corporate capture.
Look, I’ve been in the trenches of the nutrition field. I’ve seen the conflicts of interest. I’ve watched well-meaning professionals get co-opted by the agendas of food companies. This isn’t perfect, but it’s a step forward.
We need nuance. We need to protect kids without creating disordered eating. We need to change the food environment while respecting food culture and access to food.
California’s doing something. It’s messy, it’s slow, but it’s movement.
What do you think - should your state do this too? Or is this government overreach? I actually want to hear both sides.
Drop a comment. Let’s discuss it like adults who care about children’s brains.
#schoolnutrition #ultraprocessedfood #mentalhealth #nutrition #wisemindnutrition
The Fledgling Society was birthed from a pocket of recovery enthusiasm in West LA. Young people enthusiastic about a better life and helping others achieve the same. That enthusiasm still exists today. However, many folks (including myself) have evolved. Rigidity and dogma no longer serve us, but they are definitely part of how many of us got here🧎➡️
After many years of leading a recovery workshop on Zoom, we have decided to end it and many folks from the group will be starting smaller in-person workshops📚
Today we celebrated the end of another workshop cycle and started a 14-mile walk, to keep some of the customs alive…🚶🏻♂️
My heart is bursting with love and gratitude for all the people I have healed with over these last 19 years, particularly those from the workshops! ♥️
Onward 🌱
#fledglingsociety