Dehydration in Summer: Prevention and ORS Use

During the long, hot Bangladeshi summer, the body loses large amounts of water and salts through sweat, and a single bout of diarrhoea or vomiting can tip a person into dangerous dehydration within hours. Dehydration is one of the most common and preventable health problems of the hot season, and it can become life-threatening in young children and older adults. The remedy is simple and cheap: drink enough fluids and replace lost salts early with oral rehydration solution (ORS). Knowing the warning signs helps you act before it becomes serious.

What is dehydration and why does summer raise the risk?

Dehydration means the body does not have enough water and salts to work properly. In summer, heavy sweating during outdoor work, travel and play drains fluids fast, while heat also reduces appetite and thirst awareness. Add common summer diarrhoea, vomiting or fever and the losses multiply. Mild dehydration causes tiredness and headache, but if it deepens it can affect the kidneys, blood pressure and consciousness.

Early signs and warning signs

Catching dehydration early makes it easy to treat. Look for these signs:

• Dry mouth and lips, strong thirst and a headache.
• Dark yellow urine and passing urine less often than usual.
• Tiredness, dizziness or muscle cramps, especially after heat or work.
• In children: fewer wet nappies, crying without tears, a sunken soft spot.

Danger signs that need urgent care include sunken eyes, very little or no urine, fast breathing, drowsiness or confusion, fainting, and skin that stays pinched when you pull it. These mean severe dehydration.

Who is most at risk?

Some groups dehydrate faster and suffer more from it. Infants and young children with diarrhoea are the highest risk, followed by older adults who feel less thirst, pregnant and breastfeeding women, people with diabetes or kidney disease, and outdoor workers such as rickshaw pullers, farmers and construction labourers. These groups need extra fluids and earlier attention during a heatwave.

Fluids and how to use ORS correctly

For everyday prevention, drink water regularly through the day rather than waiting to feel thirsty, and increase it in the heat. When dehydration starts, especially with diarrhoea or vomiting, ORS (oral saline) is the treatment of choice:

• Mix one full packet of ORS in the exact amount of clean water on the packet, usually half a litre or one litre.
• Use clean, boiled-and-cooled or treated water; never make it stronger than directed.
• Give frequent small sips; for a vomiting child, a spoonful every few minutes works better than a big drink.
• After diarrhoea, give extra ORS following each loose stool, and continue normal food and breastfeeding.
• Discard any prepared ORS left after 24 hours and mix fresh.

Plain water, rice gruel, lemon water, soups and the water of green coconut also help, but ORS best replaces lost salts. You can keep a packet at home and check it in our medicine directory. Avoid sugary soft drinks and very strong tea as the only fluid.

Preventing dehydration in the heat

A few habits prevent most summer dehydration: drink fluids before and during outdoor work, rest in the shade during the hottest hours, wear light loose clothing, and carry water when travelling. Watch children and elderly relatives closely on very hot days and offer them drinks regularly even if they do not ask.

When to see a doctor

See a doctor if dehydration does not improve with ORS, if a child cannot keep fluids down, or if there is no urine for many hours. Seek emergency care immediately for drowsiness, confusion, fainting, sunken eyes with very dry mouth, or a child too weak to drink, as severe dehydration needs medical fluids. You can see a relevant specialist through our platform. This article is general information and is not a substitute for advice from a registered doctor.

Frequently Asked Questions

How much water should I drink in summer?

There is no single number, but most adults need more than usual in the heat. A practical guide is to drink regularly through the day and aim for pale yellow urine; increase fluids further with heavy sweating, work or fever.

Can I drink ORS even without diarrhoea?

Yes, ORS is safe to use for dehydration from heavy sweating or heat, not only diarrhoea. For mild thirst, plain water is usually enough; use ORS when you are losing a lot of fluid or feel weak and dizzy.

Is homemade salt-sugar solution as good as packet ORS?

Packet ORS has the correct, tested balance of salt and sugar and is preferred. A homemade solution can help in an emergency, but wrong proportions can be harmful, so use a proper packet whenever possible.

Are soft drinks or energy drinks good for rehydration?

No. Sugary soft drinks and energy drinks can worsen diarrhoea and do not replace salts well. ORS, water, coconut water and light soups are far better choices.

Where can I learn more?

You can read more health tips on hydration and summer illness, and organise any prescribed treatment with our free prescription tool.