was sind komplexe kohlenhydrate — what does this mean exactly?

Complex carbohydrates are long-chain sugars (polysaccharides) such as starch and dietary fiber. They are digested more slowly than simple sugars, leading to a gradual rise in blood glucose rather than a sharp spike. Good sources include whole grains, legumes, oats, quinoa, and vegetables. Unlike refined carbs (white sugar, white flour), they provide sustained energy, improve satiety, and support gut health via fiber. The German Nutrition Society recommends at least 30 g of fiber daily. However, the term 'complex' is not strictly regulated; some processed foods contain modified starches that act more like simple carbs. For optimal health, choose whole, unprocessed sources. No DNA test can meaningfully predict your personal carbohydrate metabolism – the advice applies broadly.