3. WATER
Water is without doubt the most essential dietary ingredient. But too much water can increase the total blood volume and place an unnecessary burden on the heart and blood vessels. It can also lead to a fortunately rare but potentially fatal condition called hyponatraemia, in which the body's salt levels drop and the brain swells.
Symptoms of water intoxication include headaches, fatigue, nausea, vomiting, frequent urination and mental disorientation.
WHO'S AT RISK?
Marathon runners and athletes have problems when they drink a lot of water quickly or drink water without sufficient electrolytes.
People following fad diets are at risk. People with impaired kidney functions should be careful too.
HEALTHY LIMIT:
We are unlikely to suffer from water intoxication even if we drink a lot of water, as long as we drink it over time rather than downing an enormous volume at one time. As a general guideline, most adults need approximately 810 glasses every day. But it's best to let thirst be your guide. If it's a hot day, drink a little more, but don't force down gallons of water because gallons of water because you think you must.
“Drink enough water so that your urine is colourless or light yellow,“ suggests Dr Tickoo.
While exercising, balance what you're drinking with what you're losing in sweat and that includes sports drinks.
(KAVITA DEVGAN HTB 5FEB12)
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