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Brain Boosters

Some nutritional supplements provide real food for thought

11:57am, February 11, 2011

On his third consecutive evening of air combat, a military pilot closes in on the night’s quarry, a suspected Taliban fuel depot in Afghanistan. Fatigued, his alertness flagging, the pilot throws some chewing gum into his mouth. Laced with caffeine, it’s the cockpit alternative to a cup of coffee.

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