To assess the potential impacts of low hydration and adequate hydration on various clinical signs and symptoms. Materials and Methods: Signs and symptoms of hypersensitivity and constipation were evaluated, before and after the ingestion of 40 mL/kg/day of water, in 24 healthy academics, during 14 days of follow-up. Results: Headache, dizziness, fainting and insomnia were improved. However, it is important to highlight that no significant change was found in the shape and density of stools using the traditional Bristol Scale; but there was an improvement in the sensation of completely evacuating and, therefore, there is a possibility of the influence of adequate hydration on this result. Also, significant improvement was noted regarding the symptoms of acne, rashes or sores, and redness. Conclusion: Adequate hydration protocol (40 mL/kg/d of water for 14 weeks) improved several symptoms of healthy university students related to the central nervous system (headache, dizziness, fainting sensation and insomnia). However, further controlled investigations are needed to consider the external validity of the data for other populations.

The availability of different mineral waters, some with indications of therapeutic properties, makes it necessary to investigate their interaction with nutritional habits. Objective: To analyze the nutritional profile before and after 10 days of ingestion of hypothermic water enriched with minerals in hypertensive patients. Materials and Methods: Fifteen hypertensive adults (73% women), 47.9±7.7 years old, were randomly divided into a control group (CG; n=7) and an experimental group (EG; n=8). For 10 days, subjects ingested hypothermic mineral-enriched water or placebo mineral water, with an amount established at 75% of: 1500ml + 20ml * body weight. Participants were instructed to maintain their eating habits. Macro and micronutrients were calculated by the DietPro® 5i software with the information obtained from the 24-hour recalls applied before and after the ingestion of mineral water. Results: For both groups, there were no significant differences between the macro and micronutrients of the diet assessed before and after the intervention. When compared pre- and post-intervention, there were also no differences between them, except for fiber where the amount consumed by the CG in the post-intervention was greater than that consumed by the EG (p=0.034). There was a trend towards an association between caloric intake and body weight at the beginning of the intervention (p=0.071). Conclusion: There was no change in relation to diet before and after 10 days of ingestion of hypothermal water enriched with minerals, suggesting that consumption of this type of water does not interfere with the dietary pattern. However, studies involving a greater number of participants and a longer period of consumption are necessary.