Promoting the Sustainable Development Goal 3 (SDG 3) of Good Health and Well-being of all people requires an approach that ensures that health systems are strengthened with comprehensive social support mechanisms. This interrelation has gained increasing recognition as a foundational pillar in realizing sustainable and equitable healthcare. Economic instabilities and social vulnerabilities have direct implications on health access and outcomes, making focused welfare and security measures important in entrenching SDG 3. This work combines interdisciplinary studies, bridging health policy and economic security, at a time when social policy decisions, more than ever, should be guided by real-world needs and evidence, dealing with key factors, interventions, and contributions from policymakers on strategies that can reinforce health systems. Thus, current achievements of SDG 3 and challenges to successfully integrate health and social support sectors are discussed. The study addresses future pathways to achieve this Goal, including greater public investment in inter-sectoral collaboration, innovative funding models, and data-driven policymaking as part of this next wave in advancing health systems resilience. Important ways to restructure public health with less inequality entail a reinforcement of social safety nets, mitigating health consequences through poverty and adverse economic conditions. Coordinated governance, cross-sectoral collaboration, and evidence-based monitoring frameworks assure policymakers of their effectiveness in achieving these policy priorities. This calls for prioritized planning that invests in scalability, sustainability, and adaptability for resilient health systems supported by inclusive welfare state policies. By aligning social policies with health priorities, this paper aims to contribute to a global agenda regarding universal, sustainable, and equitably achieved health outcomes within the framework of the Sustainable Development Goals.

The valorization of agricultural and industrial solid by-products as secondary resources in the development of value-added materials can contribute to environmental health protection, particularly in the climate change era. Current advances in environmental legislation also encourage manufacturers to optimize waste management, upgrading and utilization towards resource conservation, energy efficiency and cost reduction in the context of a circular economy. In the present research, the elaboration of novel sustainable ceramics is investigated by sintering (at 800 °C for 2 or 6 h) of compacted mixtures composed of lignite fly ashes along with biomass ash (olive kernel ash) at different proportions. It appears that the chemical, mineralogical and morphological characteristics of these by-products promote their use as starting materials in ceramic engineering. Characterization and evaluation of the ceramics obtained via XRD and SEM-EDX analysis, as well as Vickers microhardness measurements, confirm the effectiveness of the consolidation process. In fact, the material derived from an 85% Class-C fly ash and 15% biomass ash compact, after 6 h sintering, exhibited greater results in terms of ceramic microstructure and microhardness (380 Hv), while a sintering time of 2 h was barely acceptable. The materials developed can be considered for use in various applications.

Eggshells are an inorganic waste, and their accumulation rate is increasing globally, complicating waste management. However, the European Union defines eggshells as low-risk material that can be recycled and reused safely in other applications. Their chemical composition renders them an attractive precursor of calcium phosphate materials (CaPs). Because of their remarkable biocompatibility and capacity for natural degradation, CaPs are frequently employed in biomedical engineering applications. In this research, the wet precipitation method was employed for fabricating CaP powder. Initially, the eggshells were processed into CaCO₃ powder and then reacted with HCl to obtain CaCl₂ (aq). This reacted with Na₂HPO₄ to obtain a precipitate that was filtered and dried. The precipitate in powder form underwent X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) analysis to evaluate its microstructure, and elemental and phase composition. The results indicated that the recovered powder was brushite.