Analysis by Dr. Joseph Mercola STORY AT-A-GLANCE The probiotic bacteria Lactobacillus reuteri help upregulate the hormone oxytocin, a chemical messenger that plays important roles in the male and female reproductive systems and influences aspects of human behavior, including sexual arousal, recognition, trust and interpersonal bonding L. reuteri also upregulate systemic immune responses, thereby promoting wound healing, mental health, metabolism and myoskeletal maintenance Aged mice fed L. reuteri-containing probiotic yogurt experienced skin and hair changes that mimic the peak health and reproductive fitness seen in younger animals, including thicker dermis, and thicker, shinier, more lustrous fur. In contrast, age-matched controls that ate
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