Most Helpful Girl
Not unless you take a shit load of supplements too. Even vegans don't eat just fruit they eat vegetables, beans, nuts, in addition to supplements. You need Protein, Iron, Vitamin B, and Zinc which you're not going to get from eating just fruits. You will die.
Most Helpful Guy
According to a study a guy eating only fruits and vegetables since a long time, i don't remember how much. Then at 40 years old after a scan he has bones of a 80 years old man...
Diversity is the key. Only eat a kind of thing is not good.