EAN: 9783030509675

WHERE DOES ALL THAT FOOD GO? - ALICIA KOWALTOWS...

Most of us eat (or incorporate into our bodies) quite a bit of stuff that does not look  act or
function even remotely like us. Unless our food mysteriously disappears inside of us  this must
mean we change its molecular structure in some way. In fact  we are constantly modifying our
molecules through chemical reactions  which together constitute our Metabolism. At any given
moment  we transform (metabolize) millions of molecules within our bodies  building new ones 
breaking down others  and exchanging them with the world around us. Metabolism is much more
than the reason you gain weight when you overeat  it is a process that is so central for life
that it defines what a living being is.We will explore what metabolism is  how these chemical
reactions that constitute Metabolism are organized and how they are regulated (including the
effects of hormones). We will follow the transformations of each type of nutrient
(carbohydrates  proteins and lipids) within our bodies and cells  from the mouth  through our
intestines and then within the different organs in our body. We will discuss metabolic and
evolutionary reasons why so many people today struggle with excessive weight gain  and why some
(rarer) people find it hard to gain weight  even when eating large amounts. We will also
discuss changes in metabolism with diseases such as diabetes and heart attack  as well as
conditions such as exercise and aging.

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