Depending on what you consider healthy, weed can be used in a variety of ways for various situations, from recreational to medical, but let's say we're talking about recreational smokers. There are no safe doses to smoke Cannabis, in the same way that it brings many benefits unfortunately you will have some problems together mainly if you abuse the daily amount and depending on your age, weed greatly affects the mind, dopamine receptors, memory, learning etc... I I recommend using it only to relax at specific times.