A -orange or red foods. Apricots, carrots, peppers, sweet potato, squash. Also dairy, eggs, oily fish, (famously) liver.
B1 (thiamine) – deficiency causes several different syndromes including Wernicke’s encephalopathy (confusion, ataxia, ocular) and dry (peripheral neuropathy) or wet (cardiac failure) beri-beri. Depends on chronicity. Classically alcoholism or diet dependent on polished rice. Bread has it!
B6 – fish, potatoes, fruit, fortified breakfast cereal.
C – citrus, blackcurrant, kiwi, berries. Also peppers, broccoli, Brussel sprouts, potatoes.
B12 – see Vitamin B12. Found in fish, meat, eggs, milk, fortified breakfast cereal, yeast extract (Marmite). So a major issue for vegans. Deficiency classically causes macrocytic anaemia.
Curiously, teenagers often seem to have high levels in my experience. Apparently this can be a flag for some nasties, namely malignancies, liver and kidney diseases, and can then be accompanied by symptoms of deficiency, due to disrupted pathways… [QJM 2013]
E – nuts and seeds.
K – green leafy veg.
Folate (folic acid) – green leafy vegetables, broccoli, brussel sprouts. Oranges, wholegrain cereals, nuts and pulses (peas, chickpeas, kidney beans)