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[thur'-moe-JEN-i-sis, thur'-mah-JEN-i-sis] 
1. the production of heat in a body by physiological processes: "Two hours after her bedtime, Josie's body ceased thermogenesis, and she was freezing until I covered her with a pile of blankets."
adjective forms: thermogenetic, thermogenic
Origin:
Date unknown; from Greek, 'thermo-,' combining form of 'thermos': hot, 'therme': heat + Greek, 'genesis': origin, creation, birth. In action:
"The newly discovered gene activates adaptive thermogenesis--the process by which an animal burns stored fat to dissipate excess calories or stay warm. Heat production by brown fat warms newborn humans and helps hibernating mammals wake up ... This process is different from the body's more obvious generation of heat by shivering.
When cold, the body switches on adaptive thermogenesis in brown fat and in skeletal muscle cells, but what controls the mechanism is poorly known, notes Bruce M. Spiegelman of the Dana-Farber Cancer Institute and Harvard Medical School in Boston. He and his colleagues from Dana-Farber, Harvard, and the University of Chicago report their finding in the March 20 Cell.
'We've discovered a molecule that has all the properties to suggest that it's a key regulator of thermogenesis,' he says."
Mari N. Jensen. "Gene may open new avenue for fighting fat." Science News (March 28, 1998).
"#3 USE GARLIC.
For the want-to-get-ripped bodybuilder, garlic can work like a thermogenic. In Ayurvedic medicine--the same ancient science that gave us ephedra--garlic is recommended for weight loss. Animal experiments demonstrate that garlic increases metabolism. Garlic also helps keep blood-sugar counts stable, preventing swings in energy levels and keeping sugar levels from skyrocketing. Avoiding elevations in blood sugar tames the release of insulin, which helps maximize the burning of bodyfat."
Chris Aceto. "Ephedrinefree fat burning: seven methods to boost fat loss without ephedrine." Flex (August, 2003).
"The thermogenic effect of tea is generally attributed to its caffeine content. We report here that a green tea extract stimulates brown adipose tissue thermogenesis to an extent which is much greater than can be attributed to its caffeine content per se, and that its thermogenic properties could reside primarily in an interaction between its high content in catechin-polyphenols and caffeine with sympathetically released noradrenaline (NA). ...Such a synergistic interaction between catechin-polyphenols and caffeine to augment and prolong sympathetic stimulation of thermogenesis could be of value in assisting the management of obesity."
Dulloo AG, Seydoux J, Girardier L, et al. "Green tea and thermogenesis: interactions between catechin-polyphenols, caffeine and sympathetic activity." Alternative Medicine Review (October 2000).
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