Increasing cocoa prices, driven by environmental regulations, weather conditions, and logistical issues, are impacting chocolate manufacturers such as Mars Inc., Nestlé SA, and Hershey Co. Mars has reduced the size of its Galaxy chocolate bar by 10 g to offset costs, while Nestlé and Hershey have introduced products with less cocoa. The rise in cocoa prices, exacerbated by drought and disease in West Africa and the expected El Niño weather phenomenon, is expected to limit earnings growth for chocolate makers and may lead to price increases for customers.