Here&#x27;s a link that shows gut flora can cause people to feel not hungry.<p><a href="http:&#x2F;&#x2F;www.nature.com&#x2F;tp&#x2F;journal&#x2F;v4&#x2F;n10&#x2F;full&#x2F;tp201498a.html" rel="nofollow">http:&#x2F;&#x2F;www.nature.com&#x2F;tp&#x2F;journal&#x2F;v4&#x2F;n10&#x2F;full&#x2F;tp201498a.html</a>