Gûs80
Member
- Joined
- Apr 21, 2021
- Messages
- 157
- Age
- 43
The excellent relaxing effect that I feel when drinking diet sodas, sweetened with aspartame, made me find this interesting study.
If used alone, phenylalanine decreases serotonin in the rat brain.
But if used with tryptophan, it increases even more than just tryptophan alone.
As you may know, aspartame is made up of aspartic acid + phenylalanine.
I have never tested isolated phenylalanine, as I cannot find it in Brazil. But I believe there is a summation effect of the phenylalanine in aspart and the caffeine in diet sodas on the anxiety-free energy boost I experience and have seen others report.
At other times I drank diet coke with vodka, thinking only about the caloric issue. But I noticed that the two together made me very calm and made it virtually impossible for alcohol to get me drunk.
For me it has been an alternative to lower serotonin, especially after a bad night's sleep, which sharply increases brain serotonin.
"Dietary phenylalanine lowers the concentration of serotonin in rat brain and liver, probably resulting from in vivo inhibition of the decarboxylation of serotonin. No such effect was obtained in animals fed a high tyrosine diet. A high tryptophan diet increased the serotonin concentration in liver and brain as expected, while combined feeding of phenylalanine and tryptophan showed a significant increase in the brain serotonin content."
If used alone, phenylalanine decreases serotonin in the rat brain.
But if used with tryptophan, it increases even more than just tryptophan alone.
As you may know, aspartame is made up of aspartic acid + phenylalanine.
I have never tested isolated phenylalanine, as I cannot find it in Brazil. But I believe there is a summation effect of the phenylalanine in aspart and the caffeine in diet sodas on the anxiety-free energy boost I experience and have seen others report.
At other times I drank diet coke with vodka, thinking only about the caloric issue. But I noticed that the two together made me very calm and made it virtually impossible for alcohol to get me drunk.
For me it has been an alternative to lower serotonin, especially after a bad night's sleep, which sharply increases brain serotonin.
Effect of dietary phenylalanine and tryptophan on brain serotonin
Dietary phenylalanine lowers the concentration of serotonin in rat brain and liver, probably resulting from in vivo inhibition of the decarboxylation …
www.sciencedirect.com
"Dietary phenylalanine lowers the concentration of serotonin in rat brain and liver, probably resulting from in vivo inhibition of the decarboxylation of serotonin. No such effect was obtained in animals fed a high tyrosine diet. A high tryptophan diet increased the serotonin concentration in liver and brain as expected, while combined feeding of phenylalanine and tryptophan showed a significant increase in the brain serotonin content."