No. They can make suggestions per health reasons, but should not control what a person can eat if they want.
state and county governments
Dogs are not allowed in restaurants or stores in France, except for guide dogs.
the government would be unable to regulate human behavior
National Governments such as the one in Canada do pass legislation to regulate if logging is allowed, where it is allowed, what safeguards are to be used on how the logging is to be done, etc
The main reason the government regulates on healthy living is because they are allowed to. Considering they are a higher power than the regular population, they are allowed to put rules into effect if they choose. One example of the government regulating on healthy living was the recent larger size soda ban in NYC.
under 18
Almost never.
Religiously observant Jews will only eat in restaurants that are kosher certified.
They are not allowed to regulate religion because that would be unconstitutional and against the ideals of America. However religious people still must follow the same laws as everyone else here.
it allowed the government to set prices over some private businesses (apex)
Law,liability,and Ethics page 265 says the regulations of the government, the insurance providers, and the managed care organization to which doctors belong regulate the number and kind of diagnostic tests allowed for a condition
There are usually no signs permitting cats into restaurants however im sure you will find your local mcDonalds will permit them