Obesity is linked to chronic low-grade inflammation, which contributes to metabolic diseases such as type 2 diabetes and cardiovascular disease. This review highlights the cellular and molecular mechanisms underlying obesity-induced inflammation, emphasizing the role of immune regulation in metabolic tissues. Obesity triggers inflammatory responses through the activation of innate immune pathways, leading to chronic inflammation that disrupts metabolic homeostasis. Inflammatory processes in adipose tissue, the liver, and muscle are central to the development of insulin resistance and other metabolic disorders. The activation of macrophages, particularly the M1 and M2 subtypes, plays a key role in these inflammatory responses. The balance between these macrophage states is crucial for maintaining metabolic health. Inflammation in the brain also contributes to obesity and metabolic dysfunction, as it affects insulin signaling and energy homeostasis. The review also discusses the potential for anti-inflammatory therapies to target these pathways and improve metabolic outcomes. Key signaling pathways, including NF-κB, JNK, and ER stress, are involved in the inflammatory responses associated with obesity. Understanding these mechanisms is essential for developing effective treatments for obesity-related diseases.Obesity is linked to chronic low-grade inflammation, which contributes to metabolic diseases such as type 2 diabetes and cardiovascular disease. This review highlights the cellular and molecular mechanisms underlying obesity-induced inflammation, emphasizing the role of immune regulation in metabolic tissues. Obesity triggers inflammatory responses through the activation of innate immune pathways, leading to chronic inflammation that disrupts metabolic homeostasis. Inflammatory processes in adipose tissue, the liver, and muscle are central to the development of insulin resistance and other metabolic disorders. The activation of macrophages, particularly the M1 and M2 subtypes, plays a key role in these inflammatory responses. The balance between these macrophage states is crucial for maintaining metabolic health. Inflammation in the brain also contributes to obesity and metabolic dysfunction, as it affects insulin signaling and energy homeostasis. The review also discusses the potential for anti-inflammatory therapies to target these pathways and improve metabolic outcomes. Key signaling pathways, including NF-κB, JNK, and ER stress, are involved in the inflammatory responses associated with obesity. Understanding these mechanisms is essential for developing effective treatments for obesity-related diseases.