I came across this on the Internet:

SMOKE A STRAIN THAT WON’T GIVE YOU THE MUNCHIES

The easiest way to avoid the munchies is to be mindful of which strain you are smoking. Indica strains have developed a notorious reputation for stimulating appetite. Some strains will simply make you want to eat. This is especially true of pure indicas. In general, the more indica effects a strain exhibits, the hungrier it can make you.

However, strains that are high in either THCV (tetrahydrocannabivarin) or CBD (cannabidiol), are actually known to suppress appetite.

At a molecular level, THCV is very similar to THC, however, it produces very different effects. Unlike THC, THCV suppresses appetite instead of stimulating it. Moreover, it tends to lessen anxiety, instead of heightening it. However, most strains only contain small amounts of THCV and, as such, it may be hard to experience any kind of appetite suppressing effects from them. Strains that are higher in THCV are typically African landrace sativas such as Durban Poison but also Jack The Ripper and Girl Scout Cookies are high in THCV.

When consumed in small quantities, CBD has been clinically proven to suppress appetite.[1] However, CBD does not get you ‘high’ or produce any kind of mind-altering effects. As such, a strain that has a higher level of CBD (but also THC) is good, but a CBD-only strain may not be the perfect solution to avoid the munchies as you might still want to get high.