A popular drink most of us have every day could lower cholesterol and boost heart health, according to research. According to the Tea Advisory Panel, 72% of people think about their heart health but just a third cite drinking tea as one of the actions they took to look after their heart. Scientist Dr Tim Bond said: “Many Brits are missing a trick when it comes to this easy way to take care of their heart…..Continue reading…
By: Neil Shaw
Source: The Mirror
.
Critics:
Like nearly all other life forms, humans require water for tissue hydration. Lack of hydration causes thirst, a desire to drink which is regulated by the hypothalamus in response to subtle changes in the body’s electrolyte levels and blood volume. A decline in total body water is called dehydration and will eventually lead to death by hypernatremia. Methods used in the management of dehydration include assisted drinking or oral rehydration therapy.
An overconsumption of water can lead to water intoxication, which can dangerously dilute the concentration of salts in the body. Overhydration sometimes occurs among athletes and outdoor laborers, but it can also be a sign of disease or damage to the hypothalamus. A persistent desire to drink inordinate quantities of water is a psychological condition termed polydipsia.
It is often accompanied by polyuria and may itself be a symptom of diabetes mellitus or diabetes insipidus. A daily intake of water is required for the normal physiological functioning of the human body. The USDA recommends a daily intake of total water: not necessarily by drinking but by consumption of water contained in other beverages and foods.
The recommended intake is 3.7 liters (appx. 1 gallon) per day for an adult male, and 2.7 liters (appx. 0.75 gallon) for an adult female. Other sources, however, claim that a high intake of fresh drinking water, separate and distinct from other sources of moisture, is necessary for good health – eight servings per day of eight fluid ounces (1.8 liters, or 0.5 gallon) is the amount recommended by many nutritionists, although there is no scientific evidence supporting this recommendation.
Evidence-based hydration experts say that the amount of drinking water needed depends on ambient temperature, activity level, body size, and sweat rate. Research shows drinking when thirsty will maintain hydration to within about 2% of the needed level. Drinking beyond thirst might be beneficial for people who need to perform tasks that require intense concentration, and those with kidney disease, kidney stones, urinary tract infections, and people with a weak sense of thirst (which may include more older people).
Leave a Reply