The late, great comedian Barry Humphries (of Dame Edna fame) once spoke whimsically about the health benefits of kale. Just one fistful, he joked, contained enough essential vitamins, minerals and trace elements to keep you in a sedentary position in the bathroom for two whole days. Apparently, it wasn\u2019t tasty enough to justify a second helping.<\/p>\n
In a world where \u201csuperfoods\u201d are relentlessly marketed for their supposed ability to deliver all the nutrients we need, it\u2019s worth asking: which vitamins really are essential? And aside from kale (which I actually rather like), what foods help us meet our daily needs?<\/p>\n<\/p>\n
Vitamin A<\/p>\n
Let\u2019s start at the top. Vitamin A<\/a> \u2013 also known as retinol \u2013 is found in foods like eggs, oily fish and dairy products. It plays a crucial role in keeping your skin and immune system healthy.<\/p>\n But it\u2019s probably most famous for supporting vision<\/a>. Vitamin A binds with light-sensitive pigments in the rod and cone cells<\/a> of your retina, helping you to see, particularly in low light.<\/p>\n A deficiency in vitamin A<\/a>, though uncommon in wealthy countries, can lead to serious vision problems and even blindness. Another source of vitamin A is beta-carotene<\/a>, found in colourful fruits and vegetables like carrots, peppers, spinach and pumpkin. Your body converts beta-carotene into vitamin A, which is why we associate carrots with seeing in the dark.<\/p>\n Vitamin B<\/p>\n The B vitamins are a family of eight different nutrients<\/a>, each with its own number and role.<\/p>\n B1 (thiamin) helps the nervous system and aids digestion. People with chronic alcoholism<\/a> are especially at risk of deficiency, which can lead to Wernicke-Korsakoff syndrome<\/a>, a serious neurological disorder that affects memory and movement.<\/p>\n B2 (riboflavin) and B3 (niacin) support similar functions, while B9 (folate) and B12 (cobalamin)<\/a> are essential for red blood cell production. A lack of either can lead to anaemia.<\/p>\n Folate is especially important in early pregnancy, helping to prevent neural tube defects<\/a> like spina bifida<\/a>. That\u2019s why it\u2019s recommended for people who are pregnant or trying to conceive.<\/p>\n You\u2019ll find B vitamins in everything from beans and legumes to meat, fish and dairy; a wide-ranging family of nutrients in a wide-ranging variety of foods.<\/p>\n Vitamin C<\/p>\n The go-to vitamin when we\u2019re under the weather, whether from a virus or a hangover, vitamin C<\/a> (ascorbic acid) is known as the \u201chealing\u201d vitamin for good reason. It promotes wound healing<\/a>, supports tissue repair and helps maintain blood vessels and bones.<\/p>\n A deficiency in vitamin C causes scurvy<\/a> \u2013 a condition once common among sailors \u2013 with symptoms like fatigue, bruising, depression and gum disease.<\/p>\n<\/p>\n Fortunately, vitamin C is found in many different fruits and vegetables, especially citrus fruits. That\u2019s why 19th-century British sailors were given limes to prevent scurvy, earning them the nickname \u201climeys\u201d.<\/p>\n Vitamin D<\/p>\n Vitamin D<\/a> is essential for bones, teeth and muscles. It can be absorbed through diet, especially from oily fish, eggs and meat, but your body also makes it in the skin, thanks to sunlight.<\/p>\n In the summer, most people get enough vitamin D from being outside. But in the winter months, diet and, if needed, supplementation become more important.<\/p>\n Deficiency is more common, especially in areas with limited sun exposure. It can lead to soft, weakened bones and symptoms like bone pain, fractures and deformities \u2013 including the classic bow-legged appearance<\/a>. In children, this condition is known as rickets<\/a>; in adults, it\u2019s called osteomalacia<\/a>.<\/p>\n Vitamin E<\/p>\n Often overlooked, vitamin E<\/a> helps protect cells, supports vision and bolsters the immune system. You\u2019ll find it in nuts, seeds and plant oils and it\u2019s usually easy to get enough through a varied diet.<\/p>\n Vitamin F (Sort of)<\/p>\n Not actually a vitamin, \u201cvitamin F\u201d is just a nickname for two omega fatty acids<\/a>: alpha-linolenic acid (ALA) and linoleic acid (LA). These essential fats support brain function, reduce inflammation, and help maintain healthy skin and cell membranes. Since they\u2019re technically not vitamins, we\u2019ll let them quietly bow out.<\/p>\n Vitamin K<\/p>\n No, you didn\u2019t miss vitamins G through J: they were renamed over the years. But vitamin K<\/a> is real, and crucial for blood clotting.<\/p>\n Deficiencies are more common in children<\/a>, and can lead to bruising and bleeding that\u2019s hard to stop. Supplements are effective and given after birth.<\/p>\n Most adults get enough through foods like leafy greens and grains<\/a>.<\/p>\n And the winner is\u2026<\/p>\n All these vitamins are important \u2013 and all are found in a wide range of everyday foods. But which single food provides the widest variety?<\/p>\n Kale, oily fish and eggs come in strong at second, third and fourth. But number one is: liver.<\/p>\n