A Resilient Packet Ring adddrop device to connect multiple rings, e. The invention also relates to methods for screeningdiagnosing a subject having, or predisposed to having obesity or a related disorder by measuring the expression profiles of an adipogenic gene selected from PPAR\u03b32, LPL and \u03b1P2 gene and gene product, or other adipogenic, lipogenic, or lipolytic genes and gene products in an individual. The first component defines a channel extending between the two opposing ends.