So guess where you get Creatine?
If you’re a gorilla, ape, vegetarian or vegan you might have a problem because it’s not an essential nutrient, as it is manufactured in the human body from L-arginine, glycine, and L-methionine BUT, in human animals and other animals, approximately half of stored creatine originates from food (mainly from meat). Since vegetables do not contain creatine, vegetarians show lower levels of muscle creatine, but show the same levels after using supplements (reference).
So there’s some new research.
Creatine when combined with P forms phosphocreatine that acts as a reserve of high-energy phosphate. Creatine is found mostly in meat, fish and other animal products, and the levels of muscle creatine are known to be lower in vegetarians. Creatine supplementation influences brain functioning as indicated by imaging studies and the measurement of oxygenated Hb. Given the key role played by creatine in the provision of energy, the influence of its supplementation on cognitive functioning was examined, contrasting the effect in omnivores and vegetarians. Young adult females (n 128) were separated into those who were and were not vegetarian. Randomly and under a double-blind procedure, subjects consumed either a placebo or 20 g of creatine supplement for 5 d. Creatine supplementation did not influence measures of verbal fluency and vigilance. However, in vegetarians rather than in those who consume meat, creatine supplementation resulted in better memory. Irrespective of dietary style, the supplementation of creatine decreased the variability in the responses to a choice reaction-time task. [emphasis added]
Well, you know, I’m just going to be brash about it: eat yer fuckin’ meat, dumbass.
The news was also reported elsewhere.
Creatine, an amino acid-like compound, was first identified in 1832 for its presence in muscle. It has been the subject of about 70 randomized, controlled trials over the last 12 years or so, with the majority investigating creatine’s performance-enhancing benefits. The compound is mostly found in animal products like meat.
The role of creatine in brain functioning has been reported previously, but no data has been presented examining the effect of creatine supplementation in vegetarians, a group with lower muscle levels of creatine.
According to new results published in the British Journal of Nutrition, vegetarians showed improvements in their memory after five days of daily creatine supplements. No such improvements were observed in meat-eating omnivores. […]
Benton and Donohoe recruited 121 young women, both vegetarians and omnivores, and randomly assigned them to receive either a daily placebo, or a daily creatine supplement (creatine monohydrate, 20 grams per day, Isostar Creatine, Wander Limited, UK) for five days.
A battery of cognitive tests were performed by the women, both before and after the five days of study, with results showing that memory improved by about 40 percent in the vegetarians consuming the creatine supplements, compared with placebo.
Furthermore, creatine supplements also reduced the variability of the women’s in the responses to a choice reaction-time task in both vegetarians and omnivores.
Since I’m not The Big Scientist around here, I’d simply want to point out that this should not be in any way surprising.
Big brains have to be demanding, not only in terms of energy, but in terms of its share of the nutrient intake. When a big brained, small gutted human takes on the diet of a pea brained, large gutted primate, results should be quite predictable (hint hint).
…And so ‘d call it a target rich environment for research grants, myself.
And in other news, Angelina Jolie comes to her senses. Veganism almost killed her, says Jolie. i for one, am certainly happy it didn’t.