Most people are familiar with the custom of eating sauerkraut on New Year's Day because it is believed to bring good luck or fortune in the upcoming year. I'm not certain about how true this is unless you include good or improved health as being good luck and fortune. By emulating the practices and customs of our ancestors we can prevent illness naturally without piling up doctor's bills. How can eating sauerkraut boost your immune system, you ask? We only have to look to traditional cultures and the diets that kept them in robust health despite having few resources. One of those practices involves obtaining probiotics through the consumption of homemade sauerkraut. Probiotics are "good bacteria" that are important for maintaining health and preventing disease by boosting your immune system.