Fermented foods have a lot of health benefits. They are rich in enzymes, which help speed up digestion and absorption in our system. They are also rich in good bacteria, specifically lactobacillus acidophilus, which is an extremely beneficial flora found in the gut.
A study published in the International Journal of Obesity even found that some types of probiotics promoted weight loss.
NOTE – Most fermented foods you can buy in supermarket jars or cans have been pasteurized and cooked at high heat, killing any friendly bacteria. You’ll have to make your own pickles or sauerkraut to retain those products’ bacterial benefits. (If you take basic precautions in fermenting your own, there’s little risk.)