Tuesday, April 26, 2011
Insulin Promotes Fat Storage
High insulin levels from drinking high-sugar soft drinks or eating meals high in simple sugars promotes obesity. Insulin is an important hormone for carbohydrate, fat and protein metabolism. Blood glucose (sugar) increases rapidly after a meal. In response, the pancreas releases insulin, which helps move the glucose out of the blood and into the cells.
Glucose is an important fuel for muscles and the central nervous system (brain, spine and nerves). Excess glucose is stored for later use as fat in white adipose tissue (fat cells) through a process regulated by insulin.
Japanese scientists, in a study using fat cells cultured in the laboratory, discovered that insulin promotes fat storage by preventing fat breakdown. It does this by blocking the action of adrenaline and hormone-sensitive lipase. The study showed why high-sugar meals and soft drinks promote obesity. High-sugar soft drinks cause rapid increases in blood sugar and insulin release, which prevents fat breakdown and promotes fat storage. This study showed why high levels of insulin levels promote obesity.
(Kobe Journal Medical Sciences, 53: 99-106, 2007)