The Basic Facts of Weight Loss.
Comming from a biology background, and having been exposed to most ideas about diest in my life, I've been thinking lately about exactly how and why weight is lost, on a physical, biological level. I thought I'd post it here to get it straight in my head, and if I've got anything wrong or missed anything, someone could tell me.
Or just post a comment.
are eucaryotic organisms. Eucaryotic organisms have cells
, and cells function via the process of metabolism
involves converting one substance into another. This requires energy
. Energy is stored in the chemical bonds between atoms. By breaking
these bonds, energy is released
, and the cell can function. Animals
break the bonds of glucose moleclues to release energy
When you exercise
, your cells need to metabolise
more, so more
glucose is needed to break for more energy.
moleclues are stored as fat
in a person. The cell
acquires these moleclues and breaks them to release energy. The waste products
, what's left over, go into the blood stream
, and are filtered out by the kidneys
. The waste ends up in the bladder as urine
, and it leaves the body.
by eating. When food
is taken in, the useful parts are taken away by the digestive system
, a process in itself requiring energy
. Some foods
have more useful bits than others, such as carbohydrates
. So with these foods, more is removed to be stored as fat
and used later. Other foods like vegetables
provide various other nutrients, then the non-useful bits are removed from the body as feaces
Waste products don't just evaporate, they have to be flushed down the toilet.
Your body can't use some foods, so you should eat mostly those if you want it to use up your stored fat instead.
What do you think? Does that make sense?