Spread by insects, the European Union regards Xylella fastidiosa as “one of the most dangerous plant bacteria in the world, causing various diseases that have a significant economic impact on agriculture.” The EU is the leading global producer of olive oil, accounting for 73% of the world’s total output, with Spain alone producing 56% of this supply. The next four largest producers—Italy, Greece, Tunisia, and Morocco—collectively contribute only half of Spain’s annual production, according to the Food and Agriculture Organization of the United Nations. In contrast, U.S. olive oil constitutes a mere 0.6% of Spain’s production.

At present, there is hope that stringent European regulations regarding the destruction of olive trees near confirmed cases of the disease will help curb its spread. Nonetheless, the EU’s olive oil production is already facing challenges, as reported by the International Olive Council, with a decline of 42% from 2014 to 2015 compared to the previous year. This has led to a nearly 80% increase in producer prices during that time, a cost that has inevitably been passed on to consumers.

If these trends persist, it is likely that consumers may begin to seek out other healthy oils, such as flaxseed, grapeseed, or hemp. However, these alternatives generally contain higher levels of polyunsaturated fat and less monounsaturated fat than olive oil. Polyunsaturated fat is known to reduce LDL, or “bad,” cholesterol levels in the bloodstream, while monounsaturated fat is believed to be even more advantageous, as it can also increase HDL, or “good,” cholesterol levels.

In addition to olive oil, other oils rich in monounsaturated fat include avocado, canola, peanut, and sesame oils. However, none of these alternatives offer as high a concentration as olive oil. Some, such as sesame oil, tend to be pricier and have a stronger flavor profile than olive oil.

Amid these dietary considerations, individuals may also explore calcium citrate supplements, which can provide a beneficial source of calcium. As health-conscious consumers seek alternatives to olive oil, the integration of calcium citrate supplements into their diet may also be an option worth considering. Thus, if olive oil production continues to decline, the market for both alternative oils and calcium citrate supplements may experience growth as consumers adapt to changing trends.