Tropical Weight Loss
Tropical Weight Loss
Photo: Ksenia Chernaya
Exposing your body to cool and even cold temperatures may help recruit more brown fat cells. Some research suggests that just 2 hours of exposure each day to temperatures around 66°F (19°C) may be enough to turn recruitable fat brown. You may consider taking a cold shower or ice bath.
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Read More »What is brown fat? You may be surprised to learn that the fat in your body is made up of different colors. Scientists have identified both white and brown fat. The brown color is also sometimes referred to as inducible brown adipose tissue (BAT). What’s the purpose of body fat? Each kind of fat serves a different purpose. White fat White adipose tissue (WAT) is the standard fat you’ve likely known about your whole life. It stores your energy in large fat droplets that accumulate around the body. The accumulation of fat helps keep you warm by literally providing insulation for your organs. In humans, too much white fat can cause obesity. Too much white fat around the midsection may also create a higher risk of heart disease, diabetes, and other diseases. Brown fat BAT stores energy in a smaller space than white fat. It’s packed with iron-rich mitochondria, which is how it gets its color. When brown fat burns, it creates heat without shivering. This process is called thermogenesis. During this process, the brown fat also burns calories. Brown fat is highly regarded as a possible treatment for obesity and some metabolic syndromes. Scientists used to believe that only babies had brown fat. They also thought this fat disappeared by the time most people reached adulthood. Researchers now know that even adults have small reserves of brown fat. It’s typically stored in small deposits around the shoulders and neck. All people have some “constitutive” brown fat, which is the kind you’re born with. There’s also another form that’s “recruitable.” This means it can change to brown fat under the right circumstances. This recruitable type is found in muscles and white fat throughout your body. Possible ways to build up brown fat Certain drugs can cause the browning of white fat. Thiazolidinediones (TZDs), a type of drug used to help manage insulin resistance, can help with brown fat accumulation. But TZD medications are prescribed to people diagnosed with diabetes and are not available to others. TZDs are also associated with weight gain, fluid retention, and other side effects. So, they can’t be used as a quick fix for people looking to gain more brown fat. Here are some possible alternatives: Turn the temperature down Exposing your body to cool and even cold temperatures may help recruit more brown fat cells. Some research suggests that just 2 hours of exposure each day to temperatures around 66°F (19°C) may be enough to turn recruitable fat brown. You may consider taking a cold shower or ice bath. Turning the thermostat down a few degrees in your home or going outside in cold weather are other ways to cool your body and possibly create more brown fat. Exercise Other research on mice suggests that a protein called irisin may help transform white fat to brown. Humans also produce this protein. One 2016 study found that people who were more sedentary produced less irisin than those who exercised more often. Specifically, levels are increased when people do more intense aerobic interval training. Exercise is highly recommended by doctors for heart health and weight management. Current physical activity guidelines for adults include doing one of the following every week: 150 minutes (about 20 minutes per day) of moderate activity, like walking or playing tennis 75 minutes (about 11 minutes per day) of vigorous activity, like jogging or swimming laps There’s not enough research to know for sure if exercise creates more brown fat. But exercise still has many health benefits.
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Read More »Brown fat and research It’s important to note that until recently, most studies on brown fat are from the mid-2000s or early 2010s, and have been done on animals, particularly mice. More research is needed on humans. Researchers are still trying to understand the genes that control how white and brown fat develops. In one 2013 study , scientists engineered mice to be born with very little brown fat by limiting a protein called Type 1A BMP-receptor. When exposed to cold, the mice created brown fat from their white fat and muscles anyway, showing the power of recruitment. Researchers have also discovered that a certain protein called early B-cell factor-2 (Ebf2) might play a key role in building brown fat. When engineered mice had exposure to high levels of Ebf2, it transformed white fat to brown fat. These cells consumed more oxygen, which shows that the brown fat was indeed producing heat and burning calories. Can brown fat help treat or prevent conditions like diabetes? A 2015 review on various studies has shown that brown fat burns calories and may help control blood sugar and improve insulin levels, decreasing the risk for type 2 diabetes. It may also help with removing fats from the blood, decreasing the risk for hyperlipidemia. Other studies show promise for brown fat’s role in treating obesity.
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