DEAR DOCTOR K: My friend has started eating lots of fermented foods. She claims they are good for your health. Is that true? What are the health benefits?
DEAR READER: Humans have been fermenting foods for thousands of years. Fermentation protects foods from spoiling and lends them a taste and texture that many people enjoy. Asian and African cultures use fermentation as a way to have seasonal foods all year, and to ensure there is enough to eat during food shortages. Soy sauce and sauerkraut are examples of fermented foods.