Your Health In Mind with Michael Storm and Dr. Dean Lloyd, June 3, 2026 Hour 1

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Anabolic and Catabolic Metabolism

Anabolic metabolism (anabolism) is the constructive phase of metabolism where your body uses energy to build complex molecules from smaller ones. This process is essential for growth, tissue repair, and storing energy, and it is fueled by the breakdown processes known as catabolism. Key Concepts & Processes Energy Requiring: Anabolic reactions are endergonic, meaning they consume energy—typically in the form of Adenosine Triphosphate (ATP)—to form new chemical bonds. [1, 2] Building Blocks: It takes simple units like amino acids, glucose, and fatty acids and constructs larger macromolecules like proteins, glycogen, and triglycerides. [1, 2] Key Functions: Anabolism is responsible for child growth, building muscle mass, healing wounds, and maintaining cellular structures. [1, 2] Core Examples in the Body Protein Synthesis: Combining amino acids to create muscle tissue and enzymes. Glycogenesis: Linking glucose molecules together to form glycogen for storage in the liver and muscles. Lipogenesis: Constructing triglycerides from fatty acids and glycerol to store as fat. [1 Regulation Anabolism is highly regulated by hormones that tell your body to enter a “building” or “storing” state. The primary anabolic hormones include: [1] Insulin: Drives glucose and amino acids into cells for energy storage and muscle building. Growth Hormone (GH) & IGF-1: Stimulate tissue growth, cell repair, and bone development. Testosterone: Plays a critical role in increasing muscle mass and bone density. 

Catabolic metabolism (or catabolism) is the process of breaking down complex molecules into simpler ones to release energy. It is the “destructive” half of metabolism, which provides the cellular energy (ATP) needed to fuel the body’s growth, repair, and daily functions.How Catabolism WorksEnergy Extraction: It takes large molecules (like carbohydrates, fats, and proteins from the food you eat) and breaks them down into smaller building blocks (like glucose, fatty acids, and amino acids).Fueling the Body: Breaking these chemical bonds releases energy, which the body stores in molecules like ATP (adenosine triphosphate).Waste Creation: The process produces simple waste products, such as water, carbon dioxide, and urea, which are then excreted.Examples of Catabolic ProcessesDigestion: Breaking down the proteins in a meal into amino acids.Glycolysis: Breaking down glucose molecules to harvest energy for cellular functions.Lipolysis: Breaking down stored body fat into fatty acids for energy during exercise or fasting.Catabolism vs. AnabolismMetabolism consists of two balancing acts:Catabolism: Breaks molecules down to release energy.Anabolism: Uses the energy released by catabolism to build up complex molecules (like creating muscle tissue or synthesizing hormones).

Dean : )