Caloric labeling, does it help obesity?

One of the advantages of all my education is that I know "Death by Chocolate" has more calories than a dish of carrots. I don't know if the labeling requirements under Obamacare ever went into law, but. . .

"the impact of such labeling requirements on BMI, obesity, and other health-related outcomes is trivial, and, to the extent it exists, it fades out rapidly. For example, menu mandates would reduce the weight of a 5’10” male adult from 190 pounds to 189.5 pounds."

I do go online and read the menus before I go to a new restaurant. Many of them label the calories and carbs and fat. And before I go to a holiday lunch or party, I do a two meal fast, which medically is very good for you. 

https://www.cato.org/publications/policy-analysis/menu-mandates-obesity-futile-effort

http://dailyburn.com/life/health/nutritionist-guide-intermittent-fasting/

Exercise and IER/fasting exert complex integrated adaptive responses in the brain and peripheral tissues involved in energy metabolism. As described in the text, both exercise and IER enhance neuroplasticity and resistance of the brain to injury and disease. Some of the effects of exercise and IER on peripheral organs are mediated by the brain, including increased parasympathetic regulation of heart rate and increased insulin sensitivity of liver and muscle cells. In turn, peripheral tissues may respond to exercise and IER by producing factors that bolster neuronal bioenergetics and brain function. Examples include the following: mobilization of fatty acids in adipose cells and production of ketone bodies in the liver; production of muscle-derived neuroactive factors, such as irisin; and production of as yet unidentified neuroprotective “preconditioning factors” (Dezfulian et al., 2013). Suppression of local inflammation in tissues throughout the body and the nervous system likely contributes to prevention and reversal of many different chronic disease processes.http://www.jneurosci.org/content/34/46/15139

http://www.jneurosci.org/content/34/46/15139