More than one billion Muslims around the world observe Ramadan, Islam’s holy month. Fasting during Ramadan is a requirement for believers. This means they are barred from having sex, smoking, drinking and eating from sunrise to sunset. Today, we talk about fasting involving only food. Apart from spiritual or religious reasons, what effects does not eating have on human health? A team of researchers in the United States says fasting is good for our brain. Mark Mattson is a neuroscientist at Johns Hopkins University in Baltimore, Maryland. He and others have studied how dietary restrictions might protect your brain from neurological diseases that get worse over time. Two examples of these diseases are Alzheimer’s and Parkinson’s.