A nutritional composition for reducing oxidative damage and lipid peroxidation in humans, while allowing for the oxidative reactions necessary to sustain vital biological functions. The nutritional compositions comprise adaptogens comprising astragalus root, ashwagandha root, cordyceps, holy basil leaf, maca root, reishi mushrooms, schisandra, and suma root; superfoods comprising acerola, camu-camu, pomegranate, bilberry, blueberry, Goji berries, Acai, maitake, citrus bioflavonoids, rose hips, and Gingko biloba; probiotics comprising Bifidobacterium longum, Lactobacillus acidophilus, Lactobacillus acidophilus DDS-1, Lactobacillus bulgaricus, Lactobacillus casei, and Streptococcus thermophilus; and enzymes comprising amylase, papain, cellulase, lactase, lipase, protease, and bromelain. The nutritional compositions may also be provided as a meal replacement and further comprise one or more plant products, algae, vitamins, minerals, protein and methylsulfonylmethane (MSM).