When you lose weight, your fat cells don't just let go of fat

Popular Science | 1/11/2018 | Staff
cobra662 (Posted by) Level 3
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Click For Photo: https://www.popsci.com/sites/popsci.com/files/styles/655_1x_/public/images/2018/01/fat_cells.jpg?itok=RUDy3RPt

If cells were personified, each fat cell would be an overbearing grandparent who hoards. They’re constantly trying to make you eat another serving of potatoes, and have cabinets stacked with vitamins they never take.

Like that grandparent, your fat cells are always trying to store stuff. Fats? Of course. Vitamins? Heck yeah. Hormones? You bet. Random pollutants and toxins? Sure. Adipose tissue will soak all that up like an oily little sponge and keep it safe until you need it again. That’s the whole point of body fat—to store energy for you. When you lose weight, your fat cells start shrinking, releasing lipids and other fats into your bloodstream. These get broken down, and eventually the smaller molecules exist via your urine or breath.

Cells - Molecules - Hormones - Estrogen - Vitamins

But adipose cells release all the other molecules they've hoarded, too. That includes key hormones like estrogen, along with fat-soluble vitamins and any organic pollutants that found their way into your bloodstream as you gained weight.

Adipose tissue’s tendency to store things is an unfortunate side-effect, because often we need those things to be circulating, not sitting around. Take hormones, for instance. Female body fat actually produces some of its own estrogen in addition to storing it, and the more adipose tissue a person has, the more estrogen they’re exposed to. This is why being overweight puts you at an increased risk of getting breast cancer. Many types of breast cancer are caused by malfunctions in estrogen receptors, which are more likely to go haywire when more estrogen is around to stimulate them.

Vitamins - Problem - Sucks - Vitamins - Tissue

Vitamins pose the opposite problem. Adipose sucks up available fat-soluble vitamins (those stashed in adipose tissue instead of being excreted in your outgoing urine)—A, D, E, and K—and often doesn’t leave enough for the rest of your body. Studies suggest that obese people tend to suffer from...
(Excerpt) Read more at: Popular Science
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