It is inaccurate to say that your weight is all about willpower.
Obesity is a very complex disorder with dozens — if not hundreds — of contributing factors.
Your body also has numerous hormones and biological pathways that are supposed to regulate body weight. These tend to be dysfunctional in people with obesity, making it much harder to lose weight and keep it off (6).
The leptin signal is supposed to tell your brain that it has enough fat stored. Yet, if you’re resistant to leptin, your brain thinks that you’re starving.
Trying to exert willpower and consciously eating less in the face of the leptin-driven starvation signal is incredibly difficult.
Of course, this doesn’t mean that people should give up and accept their genetic fate. Losing weight is still possible — it’s just much harder for some people.
SUMMARY Obesity is a very complex disorder. There are many genetic, biological, and environmental factors that affect body weight. As such, losing weight is not just about willpower.