Saiyan, Humans or Alien?

Dragon ball franchise has been for most of the people, the introduction to the world of anime and manga, as it has been the first series to be watched anxiously all around the world. Dragon ball and Son Goku were famous before there was a whole fan base of anime and before the whole generation of anime. Even the Oda Echiro, the writer of the One Piece series, was inspired by Dragon ball. Dragon Ball's main protagonist Goku who was inspired by the monkey king, has achieved quite popularity amongst the anime community. Due to his immense power and his will to push himself even further, he is often placed against the most iconic super hero, Superman.

Dragon ball super is the latest edition to the ongoing series. Dragon ball super has now introduced into the Dragon ball verse more fighters, universes, gods and even an omni god. When the Saiyan from the universe 6 transformed into super saiyan the fans were flabbergasted like the saiyan prince, Vegeta himself, to see the young fighters transforming into super saiyan in such little training so the creator of Dragon ball Akira Toriyama introduced the fans to Saiyan Cells known as S-cells. The more the generation passes the amount of S-cells increases which probably explained the fact that how the young saiyans could transform so easily.

Then at some points the Dragon Ball super anime and manga mentioned Goku as a human. So it shows that Saiyan aren't some kind of alien race but are humans from planet vegeta that are some how exposed to S-cells or experimented humans like some kind of super soldiers so they can transform into a Saiyan or a Giant Ape.

The similar thing is seen throughout the series that Bio-Broly and Perfect Cell even though they are not Saiyan have a particular amount of S-Cells

Saiyans are almost like humans cause they do not get there powers from sun like kryptonians or powerless against kryptonite or afraid of fire like the martians. And if we talk about super-strength or flying ability or ki flares that is a common thing in the DB verse even human like Krillin and Master Roshi can do that