A study published in Nature Medicine(2022) of 52,000 women and men, which is the largest of its kind for humans, discovered just one factor in each overweight male and female, Low levels of brown adipose tissue! The scientist also found high brown adipose tissue levels in skinny persons.
Brown adipose tissue (BAT), also known as brown fat, is not fat. It is not a fat storer but a shrinker of fat. The brown colour is due to its densely packed mitochondria. They continuously burn off calories stored in your fat stores and food items you consume to create pure natural energy.
Even though Brown adipose tissue (BAT) makes up a fraction of your weight, it can burn up to 300 times more calories than any other cell in your body!