Substances don’t just produce psychological dependence. They reshape the gut microbiome, deplete specific nutrients in patterns characteristic of the substance, dysregulate neurotransmitter systems, and chronically activate the stress axis. When use stops, the body is left with the imprint — and that imprint sustains symptoms that can look like ongoing addiction but are actually the biological residue of it.
Post-acute withdrawal syndrome — the constellation of mood, sleep, cognitive, and craving symptoms that can persist for months to years after acute withdrawal — is in significant part a biological recovery problem. And it’s one that’s almost never investigated with the testing that would actually reveal what’s happening.
The biological dimensions most relevant to substance use recovery:
Different substances deplete different nutrients in characteristic ways. Alcohol heavily depletes thiamine, folate, magnesium, zinc, and B6. Stimulants deplete tyrosine, dopamine precursors, and catecholamine cofactors. Opioids dysregulate the entire HPA axis and gut function. Cannabis chronically affects endocannabinoid tone. Each pattern is testable — and addressable.
Substances damage gut barrier integrity, alter the microbiome, and impair the gut's role in neurotransmitter precursor production. Recovery often requires explicit gut healing. Dr. Wiss is an expert here.
Years of substance use can deplete dopamine, serotonin, GABA, or norepinephrine systems — depending on the substance — and the recovery of those systems requires specific nutrient and amino acid support.
Chronic substance use dysregulates cortisol, DHEA, and the broader stress response. These don't auto-correct in early recovery — they often need targeted support.
Cellular energy production takes a hit during heavy substance use. Fatigue, cognitive symptoms, and post-acute withdrawal often track this.
Substance use drives systemic inflammation that affects mood, cognition, and physical recovery long after acute withdrawal.
Substance recovery commonly involves prolonged sleep dysregulation that responds poorly to standard sleep hygiene alone.
The body's biotransformation systems are often impaired by long substance use, affecting hormone metabolism, mood, and energy.
Free 15-minute consultation to discuss your situation, answer your questions, and determine if we’re a good fit.
For substance use recovery, our blood panel reveals nutrient status, liver function, inflammation, and metabolic markers. NutrEval shows organic acids and amino acids — the deepest view of cellular function and neurotransmitter precursor availability. DUTCH maps the HPA axis and sex hormones (often suppressed in long substance use). The GI Effects panel reveals microbiome composition and gut inflammation. KBMO FIT 176 with Gut Barrier Panel identifies food sensitivities and the intestinal permeability that long substance use commonly leaves behind. Genetics highlights variants that affect catecholamine breakdown, methylation, and addiction-relevant pathways. Issues with environmental toxicants are widespread in substance use disorder.
If you’ve done addiction-medicine workups elsewhere, integrate them.
Phase one usually focuses on the foundational nutrient repletion that supports neurotransmitter recovery — amino acid precursors where indicated, B vitamins, minerals, omega-3s. Gut barrier support comes early. HPA axis stabilization layers in. Phase two addresses what remains — sleep architecture, mitochondrial recovery, longer-term inflammation. Throughout, we coordinate with your existing recovery support — therapist, sponsor, prescriber if applicable, harm reduction support if applicable. Functional medicine doesn’t replace recovery community or therapy. It supports them from the biological side.
For people on medication-assisted treatment (buprenorphine, methadone, naltrexone, acamprosate), we never recommend changes to that without prescriber coordination. Recovery is not the time to destabilize.
Program structure: main services page
This work fits people in established recovery — at any stage — who have appropriate therapeutic and recovery support in place and who want to address the biological dimension of post-substance recovery. It fits people in early recovery who are stable enough to engage with structured, multi-phase work. It fits people years into recovery who feel like something hasn't fully returned online. This is not appropriate as a sole intervention for active substance use disorder. If you are in active use, the right next step is acute addiction medicine care — and we're happy to help connect you with the right resources.
Free 15-minute consultation to discuss your situation, answer your questions, and determine if we’re a good fit.