Facebook use weakens self-control
Facebook users beware: the time you spend honing your image in the virtual world may inhibit your decision making in the real world. A study published in the Journal of Consumer Research found that Facebook users who focused their social media efforts on impressing a close group of friends experienced a rush of self-esteem during and immediately after their time online. The problem is that this self-esteem high then inhibited self-control as soon as they logged off. For example, a person who experiences a boost in self-esteem while on Facebook is more likely to eat an unhealthy snack or make an impulse purchase.
In general, the study found that greater Facebook use is associated with a higher body-mass index, increased binge eating, a lower credit score and higher levels of credit card debt.