%0 Journal Article %T Ca2+ signaling and metabolic stress-induced pancreatic β-cell failure. %A Magnuson MA %A Osipovich AB %J Front Endocrinol (Lausanne) %V 15 %N 0 %D 2024 %M 39015185 %F 6.055 %R 10.3389/fendo.2024.1412411 %X Early in the development of Type 2 diabetes (T2D), metabolic stress brought on by insulin resistance and nutrient overload causes β-cell hyperstimulation. Herein we summarize recent studies that have explored the premise that an increase in the intracellular Ca2+ concentration ([Ca2+]i), brought on by persistent metabolic stimulation of β-cells, causes β-cell dysfunction and failure by adversely affecting β-cell function, structure, and identity. This mini-review builds on several recent reviews that also describe how excess [Ca2+]i impairs β-cell function.