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Recurrent Infections and Low Immunity
Catching every cold signals an immune system under strain. We look at nutrients, sleep, stress, gut health, blood sugar, and hidden burdens that weaken defenses.
What you may be noticing
You catch every cold that passes through the office or the classroom. Illnesses linger for weeks. Cold sores flare. You recover slowly and feel run down between infections.
Recurrent serious infections, such as pneumonia, unusual infections, or infections requiring hospitalization, need evaluation by your physician and sometimes an immunologist to rule out primary immune deficiency.
Why it is rarely one thing
The immune system is not one organ. It is a coordinated network spread through the gut, lymph nodes, tonsils and adenoids, skin, airways, and blood, and it is in constant conversation with the nervous system.
In my model, frequent infections or slow recovery signal an overburdened immune system, not a weak one. When the toxic burden bucket is full of mold toxins, chemicals, and metals, the immune system has less capacity to prioritize, and an immune system busy with one threat, such as a hidden infection or parasites, has less left for the next. Chronic stress suppresses immune function through cortisol and keeps the body in survival mode. Poor sleep reduces immune responses. Low vitamin D, zinc, selenium, iron, and protein limit immune cell production. High sugar intake and blood sugar spikes impair white blood cell function. Repeated antibiotics and antibacterial products disrupt the microbiome, a major hub of immune training. Not a weak immune system, but an under-supported and overloaded one.
Patterns we look for
- Vitamin D, zinc, selenium, iron, and vitamin A status.
- Protein intake and the color diversity of your plants.
- Sleep quality, HPA axis output, and chronic stress.
- Blood sugar regulation and sugar intake.
- Gut microbiome balance, intestinal permeability, and antibiotic history.
- Mold and total toxic burden.
- Hidden infections, including dental, sinus, and parasite sources.
- Thyroid function.
- Complete blood count patterns and immunoglobulin levels when indicated.
How I evaluate it
The comprehensive functional neurological exam assesses autonomic balance and stress physiology, which strongly influence immunity.
Functional labs may include a complete blood count with differential, vitamin D, zinc, ferritin, fasting glucose and HbA1c, a thyroid panel, inflammatory markers, comprehensive stool analysis, mycotoxin testing when exposure is likely, and, through your physician, immunoglobulin levels when infections are frequent or severe.
How we address it
- Rule out primary immune deficiency with your physician when indicated.
- Lower the burden: mold exposure, hidden infections, and inflammatory foods, with drainage pathways open.
- Replenish immune nutrients and fuel the immune system with protein and a rainbow of whole-food phytonutrients.
- Reduce sugar and food dyes, especially through holiday seasons.
- Restore sleep and calm the stress axis and nervous system.
- Rebuild the gut microbiome with fiber-rich, diverse foods.
- Use two modes of support: a steady preventive rhythm through the cold season, and a more frequent, short-term plan at the first sign of illness, both guided individually.
Children deserve special mention. A young immune system is still building its natural killer and thymus-derived defenses, and it develops alongside the nervous system, so nutrition and low toxin exposure protect both. Frequent colds in early childhood are normal. Frequent ear infections, constant congestion, or slow recovery often respond to the same foundations: sleep, nutrient-rich food, outdoor play, a healthy gut, and a home free of mold. I build family plans that feel empowering rather than fearful.
A well-supported immune system does its job quietly.
Book your Comprehensive Functional Medicine Eval/Neurological Exam today to discover what the contributing root causes are that are underlying your health concerns.