Nutrition is one of the most important factors influencing human health. Proper diet protects to some extent against such illnesses as obesity, cardiovascular diseases, osteoporosis, oncologic diseases, etc. Energy taken with food makes proper functioning of organism possible. 30 students of the University of Warmia & Mazury in Olsztyn, both sexes, age 19-25, collected at the turn of 2005/2006. The average weight of the ration amounted to about 1.5 kg (from 802 to 3196 g). More than half of the rations did not supply the portion of calories recommended by norms, most diets did not contained enough fats; also, composition of fatty acids was not adequate. In most cases the diets did not supply enough portion of proteins. Decreased intake of calcium and magnesium was found and improper calcium to phosphorous proportion was calculated, which increased the risk of osteoporosis. Diets of most women contained too little iron, zinc, copper and manganese; men's diets were deficient in copper only. High selenium deficiency was stated. The model of nutrition after prolonged time can create a serious threat to health of the population under examination.