Unfortunately, however, a large proportion of us do not eat in a balanced way or as recommended, as shown by a nutrition survey in Estonia, which means that many people may not be getting the right amount of nutrients.
Most vitamins are not produced by our bodies, so we need to get them from our diet. However, as our diets are often not varied enough, food supplements come to the rescue.
Vitamin needs depend mainly on life expectancy, with some vitamin needs also depending on gender. Adult vitamin requirements also depend on overall energy expenditure.
For example, during pregnancy and the growing period of the foetus, adequate intake of folic acid-containing foods is essential to reduce the risk of a malformed baby being born. During pregnancy and breastfeeding, the need for most vitamins increases. However, children and the elderly need more vitamin D than adults. A stressful lifestyle, but also a very sporty one, increases the need for B-group vitamins, especially vitamin B1.
Vitamins and minerals are often taken to support the diet and prevent disease. For example, Echinacea purpurea, vitamin C and zinc can prevent colds and speed up recovery.
Medicinal plants have historically been used to prevent disease, treat inflammation, reduce fever and promote wound healing. Medicinal herbs can also be used to relieve various digestive problems, pain, relax or stimulate the body. Studies on certain medicinal plants and herbal products have shown that some may have similar effects to conventional medicines, while others may not. Medicinal herbs and their mixtures can sometimes even be dangerous to health, which is why it is important to use them correctly.
Scientists have studied natural products and found that they often have health benefits. For example, fish oil, which contains omega-3 fatty acids, can help lower triglyceride levels in the body.
Nutrient needs of different groups of people:
- People with low sun exposure
People who avoid sunlight or are on a snacking regime and whose diet does not contain enough vitamin D-rich foods, should supplement your daily diet with vitamin D. (Warning: vitamin D is toxic in large amounts and no one should exceed the recommended daily amount unless prescribed by a doctor).
Vegetarians should also take B-group vitamins if they cannot get them from cereals and other whole-grain products. They may also need to take vitamin D, riboflavin (vitamin B2) supplements, multivitamins and monitor their blood iron levels. Vegans who do not consume dairy products, eggs, fish or meat may suffer from vitamin A deficiency if they do not eat enough fruit and vegetables.
Smoking affects the absorption of several vitamins, particularly vitamins C and D. In addition, smoking can interfere with vitamin D metabolism, resulting in poor muscle function and a weak immune system. Quite often, studies also show a general deficiency of B vitamins in smokers.
- Weight and dieters watchers
People on diets of less than 1,000 calories a day should also take multivitamins to keep vitamin levels in the body normal. They should also see a doctor regularly to make sure they are getting enough of the nutrients they need from their diet.
Almost a third of older people do not get enough vitamins and essential minerals from their diet. Often their eating habits have become poorer and as a result they do not regularly eat a varied diet. In addition, the elderly are more likely to be forced to take various medications that prevent the absorption of certain vitamins and minerals. For more information on the interactions between medicines and vitamins, please contact our specialist.
- Pregnant and breastfeeding mothers
Pregnant and breastfeeding women often need a variety of vitamins and minerals in addition to food. Folic acid and vitamins B6 and B12 are particularly important during pregnancy. It is also worth remembering the mineral iron, as it is iron that ensures the necessary levels of haemoglobin in the body. Haemoglobin levels can drop significantly after a bloody delivery.
Vegetarian women should also take B-group vitamins, as a deficiency of B vitamins can be harmful to the health of the baby. Folic acid reduces the risk of neural tube defects and possible facial deformities such as cleft palate. Studies associate low folate levels during pregnancy with low birth weight, which may increase the risk of heart disease in older age. The best solution is for women to start taking extra folic acid, along with the necessary complex vitamins and minerals, when planning to become pregnant.
Vitamins and mineral supplements should only be used when the normal intake of nutrients is insufficient.
Even for a woman who follows an “ideal” diet, it is almost impossible to get all the nutrients that the body needs during pregnancy, especially iron and folic acid.
For example, a woman may need more iron during pregnancy because the amount of blood in the body increases during pregnancy. Iron is an essential component of haemoglobin. It needs to be in normal levels to distribute oxygen in the body. If your diet doesn’t contain enough iron-rich foods, such as red meat, egg yolks and dark green leafy salads, and vegetables, your body will draw on the reserves it gets from bone marrow. There is a chance of developing anaemia. Iron is particularly important during the last trimester of pregnancy, when the baby’s needs are greatest, says Roy Pitkin, a doctor who was chairman of the National Academy of Sciences Council on Nutrient Needs during Pregnancy and Breastfeeding.