US FDA Partially Lifts Gay Men Blood Donation Ban
The new policy treats gay men the same as other higher risk groups. People who have sex with prostitutes or have used intravenous drugs in the past 12 months are also barred from giving blood. Via BBC.
One Course of Antibiotics Disrupts Gut Microbiome for a Year
The drugs were found to enrich genes associated with antibiotic resistance and to severely affect microbial diversity in the gut for months after exposure. By contrast, microorganisms in the saliva showed signs of recovery in as little as a few weeks.Microbiome diversity in feces was significantly reduced for up to 4 months in participants taking clindamycin and up to 12 months in those taking ciprofloxacin. In contrast, diversity in the oral cavity microbiome was only altered for up to a week after drug exposure.Via Medical News Today.
The Scientific Reasons Why Introverts And Extroverts Are Different
It’s not that introverts have less dopamine present in their brains than extroverts do. In fact, both introverts and extroverts have the same amount of dopamine available. The difference is in the activity of the dopamine reward network.
Introverts prefer to use a different neurotransmitter called acetylcholine, writes Christine Fonseca in her book Quiet Kids: Help Your Introverted Child Succeed in an Extroverted World. Like dopamine, acetylcholine is also linked to pleasure; the difference is, acetylcholine makes us feel good when we turn inward. Via Huffington Post
Cultural Revolution in The Study of The Gut Microbiome
Made of a clear flexible polymer about the size of a computer memory stick, the hollow-channeled microfluidic device simulates the physical structure, microenvironment, peristalsis-like motion waves and fluid flow of the human intestine.
The Wyss team showed that the human gut-on-a-chip’s unique ability to co-culture intestinal cells with living microbes from the normal gut microbiome for an extended period of time, up to two weeks, could allow breakthrough insights into how the microbial communities that flourish inside our GI tracts contribute to human health and disease. Via Science Daily.