Author: Maggi Pier

<div>Herd Immunity 'Ahead of Schedule'</div>

Herd Immunity ‘Ahead of Schedule’

If a novel virus is introduced to a population, eventually enough people acquire natural immunity so that the number of susceptible people declines. When the number susceptible is low enough to prevent epidemic growth, herd immunity is said to have been reached. In the early days of the COVID-19 pandemic, some experts estimated that 70%…

Fat Hormone Influences Your Motivation to Eat

Fat Hormone Influences Your Motivation to Eat

A new study helps to explain how leptin, a hormone produced by fat tissue, influences your motivation to eat. The researchers described for the first time a collection of leptin-responsive neurons in the brain’s lateral hypothalamic area (LHA). Those LHA neurons feed directly into the mesolimbic dopamine system, which controls the rewarding properties assigned to…