Most of the stimulating supplements are derived from the herbal plant ma huang, and often also contain caffeine derived from guarana.

BBC: Dietary supplement 'can kill'

The restructuring of Caterham's line-up means Ma Qing Huang -- who made history when he became the first Chinese racer to drive in front of his home crowd during practice at the last race in Shanghai -- loses his role as the team's reserve as well as his place in Caterham's GP2 team.

CNN: Kovalainen returns to help Caterham F1

This is what raises the health issues that exercise Ma, but Huang says since the crop itself exterminates insects, farmers need to use less pesticide.

FORBES: Rice War

Forbes China Rich List billionaires such as Wang Jianlin (see related story here), Jack Ma, and Huang Wei have invested in traditional films and entertainment.

FORBES: Wealth, Bribes and Lies: Ten Years Of Tracking China's Richest

Ma Tianjie, a Greenpeace activist in Beijing, says the world shouldn't take Huang and other experts supporting "Frankenfoods" at face value because many of them have uncomfortably close links with domestic and foreign manufacturers of genetically modified crops like Monsanto, Bayer, DuPont and Syngenta.

FORBES: Magazine Article