[TheSutterDynasty]

Originally Posted by Pinner

I read about it here: http://ca.askmen.com/top_10/fitness/...ness_list.html

You said osteoarthritis but I believe you meant osteoporosis.

Protein consumption increases calcium loss. Excess protein consumption does not cause osteoporosis; poor calcium levels do. It's recommended that you have at least a 10:1 ratio of calcium(mg) : protein(g) due to the calcium loss, but this effect of protein over-consumption is very avoidable.

The claims of kidney problem claims are unsubstantiated, although there is an increased risk of kidney stones due to the same mechanism as above (calcium loss).

As for heart disease:

In humans, analysis of data from the Nurses’ Health Study showed an inverse relationship between protein intake and risk of cardiovascular disease (Hu et al., 1999).

You can read about it here.

(And yes, I agree you that shouldn't over consume protein. It may not cause the problems you say, but it's pretty useless.)