Vitamin C (ascorbic acid) boosts immunity, fights oxidative stress, and aids collagen and iron absorption. Your body absorbs 70-90% at low doses (30-180 mg) via SVCT1 transporters, but efficiency drops above 1g. For fast, natural uptake, eat whole foods like kakadu plum, acerola cherry, camu camu, amla, rosehip, guava, yellow peppers, kiwi, or strawberries—these pack […]