However, doubling dietary protein intake (1.8 g · kg − 1 · d − 1) abrogated
the increased nitrogen excretion and resultant negative nitrogen balance that occurred after the 7 - d energy deficit.
Low - carb diets have repeatedly been shown to
increase nitrogen excretion, which is one reason why they suck the big one for building muscle.
Not exact matches
Researchers in Hawaii found that guppies released in the 1920s drove down native fish populations, perhaps by competing with them for food and living space, and had likely changed the cycle of nutrients in water: Guppy - rich areas showed
increased levels of dissolved
nitrogen — from ammonium in fish urine and gill
excretions — which, in turn, stimulated algae growth.
Urinary urea
nitrogen excretion, which is indicative of total protein intake,
increased substantially with the combination diet.
Dietary carbohydrate deprivation
increases 24 - hour
nitrogen excretion without affecting postabsorptive hepatic or whole body protein metabolism in healthy men.
If we equate de facto ketogenic diets with high - protein diets (which is not always correct) then the risks proposed by critics of this type of dietary approach are essentially those of possible kidney damage due to high levels of
nitrogen excretion during protein metabolism, which can cause an
increase in glomerular pressure and hyperfiltration.12 There is not wide agreement between studies; however, some infer the possibility of renal damage from animal studies, 99, 100 whereas others, looking at both animal models, meta - analyses and human studies, propose that even high levels of protein in the diet do not damage renal function.101, 102 In subjects with intact renal function, higher dietary protein levels caused some functional and morphological adaptations without negative effects.103 There may actually be renal - related effects, but on blood pressure rather than morphological damage.
However,
increasing dietary protein intake may offset the
increase in
nitrogen excretion and negative
nitrogen balance that generally occurs during periods of energy deficiency (13, 14).
«Athletes on high protein diets should stay well - hydrated, as water loss can be
increased from
nitrogen excretion during protein breakdown.»