Eosinophils (absolute & percent)

Routine annual

also —

What it isEosinophils are granulocytes specialized for fighting parasites and mediating allergic reactions.

DoesRelease toxic granules against parasites and amplify allergic inflammation.

GoodA low eosinophil count signals quiescent allergic activity and absence of parasitic infection.

BadElevated eosinophils indicate allergic disease (asthma, eczema, food sensitivities), parasitic infection, drug reactions, or rare hypereosinophilic disorders.

Standard

0.0–0.4 K/µL; 0–4%.

Optimal

0–2% (lower is good)

Modifiers

Rises with allergic exposure, parasitic infection, certain drugs.

How to optimize

Lifestyle: Identify and eliminate allergen exposures; air filtration; manage asthma.
Diet: Identify food sensitivities; whole-food anti-inflammatory pattern.
Supplements: Quercetin (500mg 2×/day), vitamin D3, omega-3 EPA+DHA (2–4g/day).
Peptides: —
Drugs: Antihistamines, leukotriene blockers, anti-IL-5 biologics for severe asthma/eosinophilic disease.

within Blood Cells