- 29 January 2014 by John Cryan and Timothy Dinan [subscription required to read full article]
Excerpt: The bacterium Lactobacillus rhamnosus, which is used in dairy products, has potent anti-anxiety effects in animals, and works by changing the expression of GABA receptors in the brain.
My comment: Kohl, K.D. (2012) Diversity and function of the avian gut microbiota links what is known about mammals to other vertebrates (birds) and to insects (bees) via conserved molecular mechanisms in species from microbes to man (and Kohl’s Laws of Biology — i.e., nutrient-dependent, pheromone-controlled, receptor-mediated, experience-dependent ecological adaptations).
See also my comments and the comments by Dr. Charles Bailey (psychiatrist) on: The evolutionary and genetic origins of consciousness in the Cambrian Period over 500 million years ago
If you still think that Kohl’s Laws of Biology do not apply across species, see Amino acid enrichment and compositional changes among mammalian milk proteins and the resulting nutritional consequences, but do not take seriously the claim that “…milk proteins may have adapted to the species-specific nutritional needs of the neonate.” That claim is associated with evolutionary theory, which suggests that mutations cause beneficial adaptations (in proteins).
Proteins do not adapt; organisms adapt. The fact that organisms adapt is clear in all mammals because amino acid substitutions can also be detected by adult humans. We have the ability to detect differences in fat concentrations in milk via our sense of smell: Detecting Fat Content of Food from a Distance: Olfactory-Based Fat Discrimination in Humans.
If we did not share the conserved molecular mechanisms that enable the ability of all mammals to detect these differences, the epigenetic landscape could not become the physical landscape of our DNA via the conserved molecular mechanisms of species from microbes to man. Our detection abilities would have had to mutate into existence via mutations in amino acids in milk and concurrent mutations in our olfactory receptor genes, and there is no model for that. Mutation-driven evolution is a ridiculous theory that is the basis for touting such nonsense! There is no experimental evidence to support that theory, yet as you have just learned there is overwhelming experimental evidence to support Kohl’s Laws of Biology and the nutrient-dependent pheromone-controlled de novo creation of genes that links olfactory/pheromonal input to genetically predisposed behavior in species from microbes to man.