There are lots of different genetic variants that add a little bit to your risk of being overweight. These genetic variants, of course, combine with environmental factors such as food choices, sleep, and toxin exposure. So it isn't as simple as having a 'fat gene'. The GNB3 gene codes for a protein that transfers a signal from the surface of the cell into the cell, causing a response. Thus, a genetic variant in this gene that alters its function can cause a variety of responses within different cells.
GNB3 Genetic Variant:
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