Live Well Be Well with Sarah Ann Macklin | Health, Lifestyle, Nutrition

Is Your Partner Wrecking Your Gut Health? And How Fibre Can Heal You | Dr. Emily Leeming

Jul 9, 2025
In this conversation, gut-brain researcher Emily Leeming shares her insights on the intricate relationship between our microbiomes and lifestyle. She explains how stress, trauma, and even intimate connections, like kissing, can dramatically influence gut health. Emily reveals fundamental differences in the microbiomes of men and women, linking hormonal changes to these variations. Learn why loneliness can be as detrimental as poor diet and uncover the surprising role of breathwork in enhancing gut wellness.
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INSIGHT

Sex Differences in Gut Microbiomes

  • The female and male gut microbiomes diverge at puberty and shift during menopause influenced by sex hormones.
  • Women's gut microbiomes become more like men's after menopause due to hormone changes and anatomical differences.
ANECDOTE

80 Million Microbes Transferred in Kiss

  • Kissing someone for more than 10 seconds transfers about 80 million microbes between mouths.
  • Intimate partners tend to share similar gut microbiomes, so "pick your partner wisely."
INSIGHT

Gut Health Impacts Male Fertility

  • Male gut health influences testosterone and sperm health, as shown by mouse studies.
  • Fiber-rich diets and healthy microbiomes can increase sperm count and motility, linking gut health to male fertility.
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