Is IgG useful for Schlaf?

The use of IgG (immunoglobulin G) testing for sleep improvement lacks strong scientific evidence. IgG tests are often marketed for food sensitivities, but elevated IgG levels typically reflect normal immune exposure to foods rather than true intolerance. No robust studies demonstrate a direct link between IgG responses and sleep quality. Sleep issues are multifactorial, involving stress, sleep hygiene, hormones, and lifestyle. Relying on IgG tests for sleep optimization is not evidence-based. If you have sleep problems, consult a healthcare provider and consider proven interventions like consistent sleep schedules, reduced screen time, and possibly a sleep study. The evidence for IgG in this context is weak and largely driven by marketing.