The Immune Cell Deconvolution report breaks down the different types of immune cells present in a person's blood, giving insights into how the immune system is functioning. By analyzing the DNA methylation patterns, the report can estimate the proportion of various immune cells (like T-cells, B-cells, and macrophages) and track changes that may indicate immune system aging or dysfunction. This analysis helps in understanding how the immune system is involved in the aging process and its response to lifestyle or medical interventions.