Food Research: Listeria can grow on unrefrigerated caramel apples ♦ A cure for vitamin B6 deficiency? ♦ Beeting' high altitude symptoms with beet juice

Beeting' high altitude symptoms with beet juice One sign of successful acclimatization to altitude is that the blood vessels are able to deliver enough oxygen throughout the body. But normal blood vessel function depends on the body's ability to naturally produce a compound called nitric oxide. Drinking nitrate-rich beet juice helps improve blood vessel function at altitude by giving the body alternative building blocks to make nitric oxide.

A cure for vitamin B6 deficiency? Plant scientists engineered the cassava plant to produce higher levels of vitamin B6 in its storage roots and leaves. This could help to protect millions of people in Africa from serious deficiencies.

Listeria can grow on unrefrigerated caramel apples Caramel apples punctured with dipping sticks and left unrefrigerated over the course of a couple of weeks may harbor a bacterium called Listeria monocytogenes..

Pumpkin foods may not live up to healthy reputation Pumpkin products proliferate this time of year -- and not just for traditional pies and breads, but for whimsical goodies that may not live up to the pumpkin's healthy reputation. But one expert is warning that just because it's pumpkin, doesn't mean it's healthy.