@Andreas. Hey buddy. Protein does create an insulin response, but it is not as pronounced as carbohydrate, especially the higher glycemic ones. Moreover, when you train and eat high protein, the insulin (albeit at controlled levels) is a welcome thing as it helps shuttle amino acids to muscle tissue.

I have a question concerning insulin secretion but could not find a concise answer so far:
Compared to sugar, proteins do induce similar insulin spikes but obviously do not lead to fat storage. Why is that?

And is there any scientific literature establishing a possible link between continuous high protein intake and diabetes?

Many thanks for your opinion on these two questions.

@Trod. The cardio isn’t helping if you are trying to add maximum mass. I also don’t know if you are using the best exercises, rep ranges, training frequency. All of this is covered and explained in my free THT workout. I highly suggest you scroll up, download and get started today, buddy.