Absolutely. A huge number of people eat way too much and some are even obese, yet they are malnourished. Not eveything that is edible is nutritious. There are a lot of foods out there, especially processed foods, that are very low in vitamins and minerals. They may provide energy through carbohydrates and/or fat but they are low in many other nutrients we need to be healthy. If you don't eat at least one serving of raw or steamed vegetables and/or fruits every day, you are malnourished. You can't get all the nutirents you need from boxed or canned food. Some drinks like soda pop, tea, coffee and other acidic foods actually reduce the amount of available calcium and magnesium in your system. That's why so many people have Arthritis at much younger ages than they used to.
Both eating too little and too much are bad for your body, so it's essential to keep a nutritional balance.
starvation or famine or hunger or malnutrition
Malnutrition results from not getting enough nutrients, while eating too much could lead to obesity. Both of these could lead to the deterioration of the body.
malnutrition.
Short of malnutrition, there isn't much you can do to keep from growing.
Malnutrition can be caused by an unbalanced diet, or insufficient food, or unhealthy foods. It is prevented by eating a balanced diet of healthy foods in sufficient amounts - but not too much.
If you eat to much, any kind of food can be bad.
Malnutrition is a problem: 1) wherever there isn't enough food, or healthy foods; and 2) wherever people tend to eat to much, or unhealthy foods in too-high amounts.
It has yet to be determined how much or how little lead it takes to become poisoned, so it is quite possible.
Eating disorders that can cause malnutrition are most commonly anorexia and bulimia. In both, the body is not gaining the essential nutrients (vitamins, minerals, calories, fats, ect.) that it needs because the individual is not eating enough food (anorexia) or is purging / vomiting the food back up (bulimia), so the body does not get enough of what it needs daily. As a result, it must rely on stores of nutrients and calories (energy) from fat and mucle cells. This will soon run out, and the body becomes malnourished.
A little bit
It depends to a large extent which particular nutrients. It may have a very serious effect and lead to acute illness or even death. With others it may matter very little and the effects may be unnoticeable.
Not to much Not to little but just exact amount of food
In cases where it was obvious that a person was suffering from a simple lack of food, medieval people would have treated malnutrition by feeding them more. There was a lot about nutrition that was not known, however, and they did not have ways of treating many kinds of malnutrition. Scurvy, for example, results from lack of fresh vegetables and fruit, and so is a type of malnutrition. It is not clear looking at a person with scurvy that he needs better food, and simply giving more of the same food will not help much. Without understanding of treatment, the best they could do was give people suffering from scurvy rest. Treatments for scurvy were ineffective during the Middle Ages, and it was not until nearly 1800 that the British navy began to implement the effective countermeasure of having sailors eat citrus fruits. Other forms of malnutrition took longer to address, and there well may be extensive misunderstanding on the subject even today.