Post-Surgical Nutrition Deficits

I often speak of the nutritional costs of pharmaceutical drugs and this post outlines the protocol for common surgical procedures that slow healing and disturb the natural homeostasis. I have worked on many people pre and post surgery and there is a noticeable shift in their vitality post surgery that I feel is important to identify and address. If you are prepping for any major surgery, these considerations should give you the ability to pre-boost your nutritional status and avoid the post- surgical slump. You know I am huge on gut health and this is also an area that takes a massive blow then you go under the knife. Your microbiome is like the composter for the soil in your gut and must be tended to with intention and care. It controls inflammation, nutrient conversion and production of neurotransmitters. Therefore in and of itself can sustain your health for the entirety of your life. Once it is gone, however, your health becomes a constant battleground. Common perioperative drugs (pre-op prep, intra-op, and post-op recovery) and their associated nutrient costs are outlined below. Some of these post operative drugs many use on a regular basis are an overlooked danger to your health.

This is general information drawn from medical and pharmacological sources. Short-term use (typical for most surgeries) rarely causes severe clinical deficiencies in healthy patients, but it can contribute to subclinical shortfalls, especially in those with poor baseline nutrition, multiple procedures, older age, or comorbidities. Unfortunatelly the majority of Americans suffers from nutritional deficits due to a decline in mineral availability in factory farmed produce, which prevents your body from absorbing vitamins and forming functional proteins. These effects play a role in the “post-surgical health slump” (fatigue, slow healing, immune dips, mood/GI issues). Surgery itself raises nutrient demands for wound healing, inflammation control, and recovery, amplifying any drug-related costs. Most commonly depleted are B vitamins, anti-oxidant status and of course minerals.

I’ve grouped drugs by phase with examples, purpose, and documented nutrient impacts (primarily from class effects; single/short-term doses have milder impact than chronic use). Direct depletions are rare for pure anesthetics; the biggest hits come from antibiotics, pain meds, and steroids. Studies monitoring nutrient depletion address one drug at a time, but when you lump all these synthetics together, it has a larger disrupting factor than any single drug on its own.

1. Pre-Operative (Prep) Medications

These reduce anxiety, prevent infection, or manage secretions/aspiration risk. Administered shortly before surgery.

•  Benzodiazepines (e.g., midazolam/Versed, sometimes diazepam): Sedation and anxiety relief.

Nutrient costs: Minimal with a single pre-op dose. Longer-term or repeated benzodiazepines may reduce calcium absorption and increase vitamin D metabolism.

•  Prophylactic antibiotics (e.g., cefazolin—most common first-line; alternatives like vancomycin or clindamycin in allergies): Prevent surgical site infection (single dose or <24 hours typical).

Nutrient costs: Disrupt gut microbiota (even a single dose can shift flora). This impairs production/absorption of B-complex vitamins (B1, B2, B3, B5, B6, B7/biotin, B9/folate, B12), vitamin K, and can indirectly affect minerals like calcium, magnesium, iron, and zinc via reduced absorption or dysbiosis. Probiotic/gut health support is often recommended afterward.

•  Anticholinergics (e.g., atropine, glycopyrrolate) or acid reducers (H2 blockers/PPIs in some cases): Reduce secretions or aspiration risk.

Nutrient costs: Generally negligible in short-term use.

2. Intra-Operative (During Surgery) Medications

Delivered by anesthesia team for induction, maintenance, pain control, muscle relaxation, and nausea prevention.

•  IV anesthetics (e.g., propofol—most common; etomidate, ketamine): Induction and maintenance of general anesthesia.

Nutrient costs: None significantly documented for standard surgical use.

•  Inhaled anesthetics (e.g., sevoflurane, desflurane, isoflurane): Maintenance of anesthesia.

Nutrient costs: None significantly documented.

•  Opioids (e.g., fentanyl—very common; morphine, hydromorphone): Intra-op pain control.

Nutrient costs: Primarily indirect—nausea/vomiting or slowed gut motility can reduce food/nutrient intake and cause electrolyte shifts (e.g., potassium, sodium).

•  Muscle relaxants/paralytics (e.g., rocuronium, succinylcholine, vecuronium): Facilitate intubation and surgery.

Nutrient costs: None documented.

•  Antiemetics (e.g., ondansetron/Zofran): Prevent nausea/vomiting.

Nutrient costs: None documented.

3. Post-Operative (Recovery) Medications

Focused on pain, infection prevention (if extended), and nausea. Often continued for days/weeks.

•  Pain management (multimodal—common combo):

•  Acetaminophen (Tylenol): Mild-moderate pain/fever.

Nutrient costs: Depletes glutathione (the body’s master antioxidant) via liver metabolism. Post-surgery oxidative stress can increase this effect; therapeutic doses are usually safe but contribute to antioxidant burden.

•  NSAIDs (e.g., ibuprofen, ketorolac/Toradol, sometimes celecoxib): Inflammation and moderate pain.

Nutrient costs: Can impair absorption or increase loss of folate (B9), vitamin C, calcium, zinc, potassium, and iron (via GI irritation/possible micro-bleeding).

•  Opioids (e.g., oxycodone, hydrocodone, morphine, tramadol): Moderate-severe pain.

Nutrient costs: Mainly indirect (constipation, nausea → reduced intake/absorption; possible electrolyte imbalance).

•  Antiemetics (continued if needed):

•  Ondansetron or metoclopramide: Nausea control.

Nutrient costs: None documented.

•  Dexamethasone (steroid, often single intra- or post-op dose): Potent nausea prevention + anti-inflammatory.

Nutrient costs: Even short courses can contribute to depletion of calcium, vitamin D, folate, magnesium, potassium, selenium, vitamin C, and zinc (class effect of corticosteroids).

•  Continued antibiotics (if protocol requires): Same as pre-op (gut flora/B-vitamin/vitamin K effects).

How These Contribute to Post-Surgical Health Slump

The “slump” (fatigue, poor energy, delayed healing, mood/GI issues) often stems from:

•  Gut microbiome disruption (antibiotics + opioids) → B-vitamin/vitamin K shortfalls + malabsorption.

•  Oxidative stress/antioxidant drain (acetaminophen, surgery inflammation) → glutathione depletion.

•  Mineral/vitamin gaps (NSAIDs, dexamethasone) → impaired energy production, immunity, and tissue repair (e.g., low zinc/vitamin C slows collagen production).

•  Indirect effects: Reduced appetite from nausea/pain meds limits overall nutrient intake exactly when healing demands rise (protein, zinc, vitamin C, iron from blood loss).

In patients with repeated surgeries, suboptimal diets, or existing deficiencies, these effects compound. When nutrients are depleted, the body's transport, absorption and elimination mechanisms are disrupted and general breakdown starts to easily cascade, carrying forward into slow healing, generalized pain, inflammation and fatigue. Once your microbiome is gone, your ability to extract nutrients from food is destroyed and supplementation becomes paramount for maintaining health. Because the American way of life has phased out fermented foods and heavily relied on preservatives and chemical adjuvants, it is extremely difficult to regain your normal microbiome by leaving up to chance. Most of the yogurt and probiotic supplements lack the 3 key strains necessary to sustain beneficial bacteria in the gut. You will notice changes in your digestion, your body odors and mood very quickly. The key strains of bacteria are very susceptible to antibiotics and unfortunately the first to be killed off. Your microbiome takes a concerted effort to re-establish once gone since over the counter probiotic supplements and probiotic foods are typically comprised of acidophilus, non-laminating lactobacillus and bifidobacter strains.

In order to combat these widespread deficiencies and demands on your system, it is crucial to load up on minerals, vitamins (fat and water soluble) and antioxidants prior to going into surgery and plan to rebuild your gut microbiome strategically so that you don't have a breakdown of future nutrient exchange from recolonization with harmful microbiota. Glutatione is the most important antioxidant in the body and along with others like coenzyme Q10 can be replenished through supplementation to bring your body out of the deficit. Schedule a nutritional consultation with me to assist if you wish to restore your gut function. I can refer to a holistic nutritionist for gut testing analysis to determine recolonization status and how to proceed to correct existing rebalancing.