Indeed, unlike animal protein,
plant protein has not been associated with increased insulinlike
growth factor 1 levels28, 29 and has been linked to lower blood pressure,30 - 32 reduced low - density lipoprotein levels,32 - 34 and improved insulin sensitivity.35 Substitution of
plant protein
for animal protein has been related to a lower incidence of CVD36 - 39 and type 2 diabetes.40 - 42 Moreover, although a high intake of red meat, particularly processed red meat, has been associated with increased mortality in a recent meta - analysis of 13 cohort studies, 43 high consumption of nuts, a major contributor to
plant protein, has been associated lower CVD and all - cause mortality.44 These results underscore the importance of protein sources
for risk assessment and suggest that other components in protein - rich foods (eg, sodium, 45 nitrates, and nitrites46 in processed red meat), in addition to protein per se, may have a
critical health effect.
The claim that increased CO2 promotes crop yields is misleading in that
plants may grow larger (and that
growth eventually levels out and ceases), but increased atmospheric CO2 inhibits
plants» abilities to uptake other
critical nutrients (including nitrogen and phosphorus); thus resulting in
plant nutrient deficiency and a deficiency
for organisms that consume those
plants.