The increasing global energy demand and the urgency to move away from fossil fuels have made hydrogen a promising clean energy solution. While hydrogen offers high energy density and potential CO2 emission reductions, its current production heavily relies on fossil fuels, contributing to significant CO2 emissions. Life Cycle Analysis (LCA) plays a vital role in assessing and optimizing hydrogen production by evaluating environmental impacts like Global Warming Potential (GWP), energy consumption, toxicity, and water usage. The study emphasizes that the choice of energy sources and feedstocks significantly influences the environmental footprint of hydrogen production. Notably, hydrogen production from renewable sources such as wind, solar, and hydropower exhibits much lower environmental impacts compared to fossil fuel-dependent or grid electricity methods. Challenges like data accuracy, economic analysis integration, and assessing mixed gases are highlighted, urging for further research in these areas. Future studies should concentrate on enhancing data precision, evaluating the impact of technological advancements, and exploring novel production methods. Standardization of functional units and harmonizing assessment methodologies are deemed essential for transparent and consistent sustainability evaluations. Techniques like stochastic modeling and Monte Carlo simulations are recommended to manage uncertainties better and ensure reliable LCA results. The overall sentiment of the article is positive, emphasizing the potential for optimizing hydrogen production to create a more sustainable future.