Question 1

What is frequent illness?

Accepted Answer

Frequent illness describes a pattern of recurrent infection or generalised sickness that exceeds the expected frequency for age, occupation, and environmental exposure. The average adult experiences 2–4 upper respiratory infections per year; children in group care may have 6–8. Frequency beyond these ranges, or recurrent infections requiring hospitalisation, antibiotic treatment, or caused by unusual organisms, warrants investigation.

Question 2

What do people commonly experience with frequent illness?

Accepted Answer

People describe feeling they never fully recover between illnesses, having a cold that leads immediately into another, missing work or social activities regularly due to recurring illness, and feeling their body's defences are inadequate.

Question 3

What lifestyle changes can help with frequent illness?

Accepted Answer

Adequate sleep (7–9 hours) is the most robustly evidence-supported modifiable immune factor. Vitamin D optimisation (supplementation in winter or low-exposure contexts) reduces respiratory infection risk with consistent evidence. Zinc adequacy supports multiple immune functions. Reducing alcohol and stopping smoking significantly improves immune resilience. Stress management reduces cortisol-driven immune suppression. Moderate regular exercise enhances natural killer cell activity and antibody response.

Question 4

What integrative approaches support frequent illness?

Accepted Answer

Immunological investigation (full blood count with differential, immunoglobulin levels, complement, vaccine antibody titres) guides diagnosis of immune deficiency. IVIG (intravenous immunoglobulin) is indicated for primary antibody deficiency. For secondary causes: treating the underlying cause (optimising diabetes, adjusting immunosuppressives) is primary. Lifestyle interventions with evidence for immune function include sleep optimisation, zinc adequacy, vitamin D sufficiency, stress management, and moderate regular exercise.

Question 5

When should I seek professional support for frequent illness?

Accepted Answer

Seek medical assessment for four or more ear infections per year, two or more pneumonias per year, recurrent deep infections, infections with unusual organisms, or infections requiring IV antibiotics. Immunological workup is indicated. Any adult with previously unexplained recurrent illness should have HIV testing offered.

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