**3. Problems in nutrition research from 1970 to the present**

#### **3.1 Dietary fibre**

The chemical compositions of fibres of different origin have been widely studied, as have their different behaviours such as viscosity, linkage capacity, detoxication abilities, and changes before vs. after treatments like heating, boiling, cooking, and so on [4].

To understand the actions of different foods, we must investigate their effects in healthy subjects as well as subjects with different diseases. For this, written and permitted protocols in accordance with guidelines from different national and international authorities and permission from persons who participate in the studies are required [4].

#### **3.2 Metabolic wards in nutrition research**

To correctly measure the actions of foods (given either orally or parenterally), the correct methodology must be used. As such, controlled dietary studies typically take place in metabolic wards. These wards must be fully equipped with the appropriate measuring instruments, staff (e.g., physicians, laboratory assistants, etc.), and study participants. Details of different accepted methods can be found in our previous book [5].

#### **3.3 Chemicals and drugs in food**

One of the biggest problems with foods for human consumption is the wide and systematic use of chemicals (plant origin food) and drugs such as hormones (animal origin foods). The aim of these systematic treatments is to increase crop and livestock yields.

My research team studied the effects of capsaicin (from paprika) on the socalled capsaicin-sensitive afferent nerves and compared its anti-inflammatory properties with those of nonsteroidal anti-inflammatory drugs (NSAIDs), which can produce mucosal damage, bleedings, ulceration, and of course stomach pain. Our results showed that paprika for human consumption contains anywhere from one to eight different pesticide residues (see The Report Card: Pesticides in Sweet Bell Peppers at www.ewg.org; [6], pp. 152–153).

#### **3.4 Controls of our observations**

We present the results of our population observations along with lists of agricultural chemicals used both in plants and animals, although we do not identify the individual treatments.

#### **4. Conclusion**

The field of nutrition is very wide, thus collaboration is necessary to investigate the different problems stemming from plant and animal foods before their arrival to humans. We must identify the main problems of industrial food factories, food storage, and more.

We all know that the world's population is growing exponentially, whereas the world's food supply is dwindling. Thus the possibility of malnutrition (starvation) is extremely high.

**5**

**Author details**

2 University of Valladolid, Spain

provided the original work is properly cited.

\* and Gonzalo Diaz Soto2

1 First Department of Medicine, University of Pécs, Hungary

\*Address all correspondence to: gyula.mozsik@gmail.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

Gyula Mózsik1

*Introductory Chapter: Mineral Deficiencies - Electrolyte Disturbances, Genes, Diet and Disease…*

Our responsibility lies in the production of better foods for the prevention and treatment of different diseases. We must work together and learn from one another, focusing our attention on problems of agriculture, climate, economics, medicine,

*DOI: http://dx.doi.org/10.5772/intechopen.97116*

and more.

*Introductory Chapter: Mineral Deficiencies - Electrolyte Disturbances, Genes, Diet and Disease… DOI: http://dx.doi.org/10.5772/intechopen.97116*

Our responsibility lies in the production of better foods for the prevention and treatment of different diseases. We must work together and learn from one another, focusing our attention on problems of agriculture, climate, economics, medicine, and more.
