2. Contd..
Ever wondered where the fat goes when we
lose weight? Most of it is breathed out as
carbon dioxide, according to a new study.
Lungs are the primary excretory organ for
weight loss, scientists have found. Ruben
Meerman and Andrew Brown at the
University of New South Wales set out to
calculate how we “lose weight“.
Human fat cells store triglyceride, which
consists of just three kinds of atoms; carbon,
hydrogen and oxygen.Shedding unwanted
fat requires unlocking the atoms in
triglyceride molecules by a process known as
oxidation.
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3. Contd..
By tracing every atom's pathway out
of the body , the researchers
discovered that when 10 kg of fat
are fully oxidized, 8.4 kg departs via
the lungs as carbon dioxide. The
remaining 1.6 kg becomes water.
The analysis showed that the inhaled
oxygen required for this metabolic
process weighs nearly three times
more than the fat being `lost'.
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4. Contd..
To completely oxidize 10kg of human fat, 29 kg of
oxygen must be inhaled producing a total of 28 kg
of carbon dioxide and 11 kg of water. “None of this
biochemistry is new, but for unknown reasons it
seems nobody has thought of performing these
calculations before. The quantities make perfect
sense but we were surprised by the numbers that
popped out,“ the study authors wrote in the
journal BMJ.
“These results show that the lungs are the primary
excretory organ for weight loss. The water formed
may be excreted in the urine, faeces, sweat,
breath, tears, or other bodily fluids and is readily
replenished,“ they added. Brought to you by
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