The article explores the potential of biohydrogen production as a sustainable energy solution in response to increasing energy demands due to population growth. Fossil fuels' environmental impacts have led to the search for alternative energy sources like biohydrogen, which offers a carbon-neutral and renewable energy solution. The review focuses on biohydrogen production via anaerobic digestion and highlights the significant growth in research on this topic over the past two decades. Research advancements include innovative reactor configurations, diverse microbial consortia, and the integration of artificial intelligence for process optimization. Biohydrogen production is found to support various Sustainable Development Goals (SDGs) related to clean energy, climate action, and waste management. The article synthesizes recent advancements to provide a roadmap for future research in sustainable energy solutions, showcasing the promising potential of biohydrogen as a clean energy source.