Limiting our choices

Crop selection: A wheat field in Madhya Pradesh, India. The crop is a major staple in over 97% of countries. Experts says the world is relying on fewer crops. - EPA

Changing food patterns will lead to rise in obesity and global food insecurity.

THE world food supply has grown increasingly dependent on a shrinking list of crops, such as wheat and maize, in the past 50 years with major consequences for human nutrition and global food security, according to a new study.