Olive

In a groundbreaking study, a healthy fatty acid in olive oil has been found to "supercharge" immune cells that fight cancer. Meanwhile, another kind of natural fat undermines the health of the same cells, killing them off and triggering inflammation.

Psoriasis may not have a cure, but significant relief might be found at the dinner table. A clinical trial has shown that the Mediterranean diet could dramatically improve symptoms, quality of life and overall health of those with the condition.

A compound that occurs in mature olives and olive oil can regulate glucose and ramp up weight loss in rapid time, mimicking the effects of existing medication. This opens the door for developing safe, natural treatments for obesity and type 2 diabetes.

When olive oil is produced, the leftover water and solid residue are discarded – and that can be problematic. Help may be on the way, however, as scientists have devised a process of converting the wastewater into biofuel, fertilizer and clean water.