But that’s because, for the most part, we live in a nutrient-rich, low-danger environment. But it turns out that you can also turn an anxious rat into a more relaxed rat by spicing up its living quarters. When enough cortisol is bound, the hippocampus sends out signals that turn off the stress circuit, shutting down both the fight or flight response and cortisol production. We’re used to thinking of inheritance in terms of the letters of the dna code that pass to us from our parents — through eggs and sperm. Some mother rats spend a lot of time licking, grooming, and nursing their pups. High levels can lead to heart disease, depression, and increased susceptibility to infection.
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Mama mature lick. Through her licking behavior, a mother rat can write information onto her pups’ dna in a way that completely bypasses eggs and sperm. But too much cortisol can be a bad thing. All galleries and links are provided by the parties. In order to post a comment you have to be logged in.
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