Oh lord.....ask around and read the feedback in that thread about how many people use them and like them. I cant come to your house, flex my muscles and tell you liver tabs made me big, so I dont know how to prove it to you. You can indeed get all of that through your diet, but you can also get all your omegas (no need for flax) all of your vitamins (no need for a multi vitamin), creatine (no need for a creatine supplement), glutamine (no need for a glutamine supplement, etc. The list goes on, you can get a lot of things from your diet, but can you get enough of them to successfully build your body? Doubtful. Thats my supplements are out there. These liver tabs are as pure as it gets, I cant really prove it, but I know no one has died from taking them, so I dont know what else to tell you besides dont buy them if you dont think you will benefit from them, I certainly have as have many others and for $10 per 500, I'll continue to buy them.