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By Colleen Bush, RDN |

Functional Medicine Before Surgery

A Multi-Disciplinary Approach to Reducing Downtime & Elevating Results 

Functional Medicine Before Plastic Surgery

Procedure preparation matters as much as the procedure itself. The weeks leading up to surgery are a genuine opportunity to elevate your results while boosting your post-surgical comfort. And it’s an opportunity that conventional pre-surgical clearance rarely takes full advantage of.

Functional medicine before surgery addresses the biological foundations that determine how your body handles surgical stress and how efficiently it heals.

Key Clinical Takeaways
  • Functional medicine evaluates the underlying factors — hormones, inflammation, gut health and nutrition — that directly influence surgical safety and outcomes.
  • Standard pre-surgical clearance is designed to confirm safety thresholds; functional medicine raises the ceiling by giving the body more resources to work with before the procedure begins.
  • Optimizing your biology before surgery supports faster recovery, reduced downtime and more consistent, long-lasting results.
  • BMI is not a cutoff for care. It’s a starting point for a deeper, more personalized conversation about your health and surgical readiness.

What a Pre-Surgical Functional Medicine Evaluation Looks Like

A functional medicine evaluation approaches surgical readiness from a different angle entirely. Rather than checking minimums, it looks for imbalances. These biological imbalances don’t always surface on a basic metabolic panel, but they absolutely influence how your body performs under surgical stress and recovers in the weeks that follow.

Colleen meeting with a functional medicine patient to discuss pre-surgery nutrition planning

What Gets Evaluated During a Pre-Surgical Assessment:

This is not a comprehensive list, nor does it mean every patient is evaluated with each of these tests. These are among the most common tests that we perform during this part of the process.

Patient looking at their recent lab test results in their living

These Systems Have a Documented Relationship with Surgical Outcomes

Elevated systemic inflammation before surgery is associated with prolonged recovery times and higher rates of post-operative complications. Micronutrient deficiencies (particularly Vitamin D and zinc) are strongly linked to impaired wound healing and increased infection risk.

A 2024 narrative review published in JPRAS Open focused specifically on nutrition’s role in surgical wound healing and aesthetic outcomes. It identified preoperative nutritional status as one of the most significant modifiable risk factors for post-surgical complications, including delayed wound healing, infection and extended recovery times.

“Modifiable” is the operative word. These aren’t fixed variables. They are health factors that a qualified care team can actually identify, address and correct before a patient ever goes into an operating room.

Function Dietitian Colleen Bush, RDN, posing in a wooden chair and muted background

“Most patients are familiar with a standard pre-surgical workup, like bloodwork, an EKG, a confirmed list of medications, a look into family history & a clearance sign-off from a primary care provider. It’s thorough enough to confirm you’re safe to proceed! But it doesn’t look for optimization opportunities.”

Colleen Bush, RDN

How Functional Medicine Supports Surgery Recovery

Recovery actually begins weeks, sometimes months, before the procedure date.

The body’s capacity to heal is directly tied to the resources it has available at the time of the procedure: sufficient protein for tissue repair, a well-regulated inflammatory response, stable hormones and a competent immune system. The recovery process becomes profoundly more efficient and more comfortable when those systems are optimized beforehand.

Chronic, Low-Grade Inflammation is an Underdiscussed Surgical Variable

It’s not the dramatic, acute inflammation you’d feel after an injury. Low-grade inflammation often simmers in the background, showing up as elevated CRP, persistent cytokine activity and compromised immune signaling.

A 2023 narrative review published in Anaesthesia found that patient-specific pre-surgical immune states directly correlate with clinical recovery. It also found that when the body’s inflammatory response becomes dysregulated in the perioperative window, the result is increased postoperative pain, delayed physical recovery and prolonged hospital stay.

Tissue Repair Begins at the Cellular Level

The amino acid profile of a patient at the time of surgery directly influences how quickly new tissue forms, how well incisions close and how the body manages oxidative stress in the post-operative window.

This is one of the primary reasons why pre-surgical nutrition planning should be a core tenet of the pre- and post-procedure process.

A patient looking out at the horizon as she thinks about her post-surgery life

“We want to give your body the best chance to heal as effectively as possible. This starts with a simple concept I like to tell patients: ‘A less inflamed body heals better.’ That’s not just for surgery, either. Inflammation reduction is often one of the first objectives when healing the gut & addressing chronic illnesses.”

-Colleen Bush, RDN

MORE INSIGHT

Three Pillars That Influence How Your Body Heals

Woman making shopping list for groceries on a notebook to plan a meal for dinner.

Hormone Balance

Hormones regulate mood and energy while also governing tissue repair, immune response and the body’s ability to manage the cortisol surge that surgical stress triggers. Estrogen, progesterone and thyroid hormones each play documented roles in wound healing.

Imbalances in any of them can slow recovery unexpectedly. DUTCH hormone testing helps credentialed providers identify and address these gaps before surgery, not after.

Hormone Balancing

Patient experiencing harsh gut health symptoms

Gut Health Optimization

The gut is the body’s primary interface for nutrient absorption. If gut lining integrity is compromised, the body can’t efficiently absorb the nutrients it needs for tissue repair, regardless of how well the patient is eating on paper. This condition is often called “Leaky Gut Syndrome” and is characterized by increased intestinal permeability.

GI-MAP testing evaluates the microbiome and gut lining before surgery so care providers can address absorption gaps proactively.

Gut Health

Sleep & Immune Function

Sleep is when the body performs the vast majority of its repair work. Growth hormone is secreted primarily during deep sleep, and cytokine regulation (the immune system’s mechanism for modulating inflammation) depends on consistent rest.

Sleep deprivation elevates pro-inflammatory markers and meaningfully impairs immune function, which makes sleep quality before surgery both a wellness consideration and a clinical one.

Get Better Sleep

Nutrition Planning Before Surgery

Collagen synthesis, wound closure speed, immune competence and tissue resilience all trace back to nutritional status. The goal of pre-surgical nutrition planning is targeted optimization. Every plan is built around the patient’s baseline labs, lifestyle and surgical goals.

KEY INSIGHTS

Key Nutrients for Surgical Preparation

A table filled with food containing high protein

Protein

The most critical macronutrient for pre-surgical readiness.

The body requires adequate amino acid availability (particularly leucine, arginine and glutamine) to build and repair tissue. Patients with low pre-operative protein status experience significantly higher rates of delayed wound healing and post-operative infection.

A patient holding up her vitamin c supplement she takes each morning

Vitamin C

Essential for collagen synthesis.

Vitamin C serves as a cofactor for prolyl hydroxylase, the enzyme responsible for stabilizing the collagen structure that forms the scaffolding of new tissue. It also plays a direct role in post-surgical tissue repair and immune modulation. Many adults — including those who appear generally healthy — are operating at suboptimal Vitamin C levels without knowing it.

A woman walking outside to get natural vitamin D

Vitamin D

Influences immune response & muscle function.

Deficiency is common and strongly associated with post-operative complications, including infection and prolonged healing times. It can also have a negative mental health impact during this highly sensitive time. The relationship between Vitamin D status and surgical outcomes is well-documented across multiple surgical specialties.

A close up photo of a patient counting their zinc tablets

Zinc

Supports DNA synthesis, protein metabolism & immune defense.

Multiple clinical trials have demonstrated improved healing rates in patients who correct pre-surgical zinc deficiencies, and deficiency is far more prevalent in the general population than most people realize.

A patient holding a fish oil supplement before her procedure

Omega-3 Fatty Acids

Modulate the inflammatory cascade.

While acute post-surgical inflammation is a necessary and healthy part of healing, chronic or excessive inflammatory response impairs the process. Omega-3s support a more controlled, efficient inflammatory response in the weeks surrounding surgery.

Clinical Note: Certain supplements — including high-dose Vitamin E and fish oil at doses above 3g per day — may increase bleeding risk before surgery and should be paused or adjusted under provider guidance. Your surgical team should coordinate supplement timing directly with patients as part of the pre-surgical protocol.

Anti-Inflammatory Eating Before Surgery

Beyond specific nutrients, the overall dietary pattern in the pre-surgical window matters.

Foods high in refined sugars and ultra-processed ingredients promote systemic inflammation. A Mediterranean-style dietary pattern (rich in colorful vegetables, lean proteins, healthy fats and whole grains) has robust evidence behind it as an anti-inflammatory eating framework, and offers a strong, versatile framework to build around.

“What you eat in the weeks before surgery shapes the biological environment your surgeon is working in. I’ve heard both Dr. Donaldson & Dr. Sieffert say this to patients — & when the surgeon is telling you this? They really listen! One of the harder pre-surgery changes patients have to make? Quitting smoking. Smoking has some of the most detrimental effects on the body. But we’ve found that if a patient can quit long enough for their procedure, this drastically improves their odds at dropping it for good!” 

-Colleen Bush, RDN

Smoking: One of the Most Significant Lifestyle Factors Affecting Outcomes

Nicotine impairs circulation, reduces oxygen delivery to healing tissue and meaningfully increases complication risk. Patients who can quit well in advance of their procedure improve their surgical outcomes and reduce risks.

Many patients find it substantially easier to quit after making it through the 2 or more weeks necessary before their procedure.

 

Close up of a high-magnesium dinner

Fueling Recovery

Nutritional Goals After Surgery

The body enters a catabolic state in the 48–72 hours immediately following surgery. It begins breaking down stored resources to fuel the repair process. Without adequate nutritional support, the body may draw on lean muscle mass for the amino acids it needs, which is a scenario surgeons and patients both want to avoid as much as possible.

Post-Surgical Nutritional Goals by the Numbers

The following ranges are general starting points. Patients should expect personalized recommendations based on procedure type, patient labs and health assessment.

For Women:
  • Protein: 1.2–1.6g per kilogram of body weight daily (example: a 140-lb woman targets approximately 76–102g of protein per day)
  • Vitamin C: 500–1,000mg daily to support active collagen synthesis
  • Vitamin D: Maintain serum levels of 40–60 ng/mL (supplementation varies based on baseline)
  • Hydration: Minimum 2–2.5 liters of water daily; more if surgical drains are present
  • Iron: Monitor closely, particularly for patients who experienced notable blood loss during surgery
For Men:
  • Protein: 1.4–1.8g per kilogram of body weight daily (example: a 185-lb man targets approximately 118–151g of protein per day)
  • Vitamin C: 500–1,000mg daily
  • Vitamin D: Maintain serum levels of 40–60 ng/mL
  • Hydration: Minimum 2.5–3 liters of water daily
  • Zinc: 15–30mg daily to support tissue repair and immune defense

“A male patient recovering from a tummy tuck will have a much different protein requirement than someone recovering from a minimally invasive liposuction body contouring procedure. These ranges exist as a foundation. The personalized plan is vital & matters significantly more than general benchmarks.” 

-Colleen Bush, RDN

Foods That Support Surgical Recovery

  • Lean proteins: chicken, turkey, eggs, Greek yogurt, fish, legumes
  • Anti-inflammatory fats: salmon, avocado, olive oil, walnuts
  • Collagen-supporting foods: bone broth, citrus fruits, bell peppers, leafy greens
  • Hydrating foods: cucumbers, watermelon, celery, coconut water
  • Foods to minimize: alcohol (impairs immune function and increases bruising risk), refined sugars (promote systemic inflammation), ultra-processed foods (nutrient-sparse and inflammatory)
Ideal Post-Surgery Diet

“I don’t like to create rigid meal plans. Too much restriction minimizes adoption. After all, who likes to be told what they can’t do, right? I really emphasize some key areas of nutrition that patients need most now, but often overlook even in their day-to-day lives. Protein targets. Fiber intake. Water from all sources. The only real ‘secret weapon’ here is a consistently strong diet!”

-Colleen Bush, RDN

BMI Is Not a Cutoff for Care

BMI does matter in surgical planning, but it’s rarely the end of the conversation. Certain BMI ranges can increase anesthesia-related risk and affect how the body responds to surgical stress. Those thresholds exist for good reasons, and a qualified surgical team will always be transparent about them.

What they shouldn’t do is leave a patient without a path forward.

What a Comprehensive Approach Looks Like

When BMI is a factor, functional medicine gives patients a genuine, structured way to address it. That means evaluating the underlying contributors — metabolic efficiency, hormone balance, inflammation markers and the lifestyle patterns that influence weight — rather than simply handing someone a number and sending them home.

Medical weight loss programs, nutrition planning and targeted lifestyle interventions can help patients reach a healthier range for their procedure.

A patient participating in a group yoga class

Success Stories: When Patients Surprise Themselves

In some of our favorite cases, patients feel so empowered by their functional medicine progress that they choose not to move forward with surgery at all. That’s something we fully support. They recognize that the goal was never to “have the procedure.” The real goal was to feel better in their own body and understand it better.

Frequently Asked Questions

Yes. Pre-surgical optimization through functional medicine has measurable effects on recovery speed, wound healing and post-operative complication risk. Research consistently links pre-surgical nutritional status, inflammatory markers and hormone balance to recovery outcomes.

Correcting deficiencies and imbalances before surgery gives the body the resources it needs to heal efficiently.

Ideally, 8–12 weeks before surgery allows enough time to run baseline testing, identify deficiencies and implement a meaningful pre-surgical protocol. Some patients begin earlier, depending on their baseline health status and surgical goals.

Even 4–6 weeks of targeted nutritional and lifestyle optimization can produce measurable improvements in the markers that matter most.

No. You don’t need a diagnosis or a pre-existing condition to benefit from functional medicine before surgery. Many of our patients come to us in generally good health, and still discover imbalances that, once addressed, meaningfully improve their surgical readiness and recovery experience.

Yes. Donaldson operates across three integrated pillars: Surgical, Aesthetics and Functional Medicine. This allows the surgical and functional medicine teams to collaborate directly on patient care plans. This multi-disciplinary approach is one of the defining differences between Donaldson and a traditional plastic surgery practice.

Colleen Bush, RDN, Author Photo

About The Author

Colleen Bush, RDN, LDN, IFNCP, is a functional medicine dietitian in Columbus, Ohio, specializing in pre-surgical nutrition, gut health optimization and personalized lifestyle planning. Having navigated both Hashimoto’s disease and rheumatoid arthritis firsthand, she brings a deeply personal understanding of the relationship between nutrition, systemic inflammation and the body’s capacity to heal.
Colleen leads with education at every step, helping patients understand not just what to eat, but why it matters, so they can make informed, confident decisions about their health.

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