Bangalore: The hot weather usually brings with it digestive problems for many. While some suffer from constipation, for others bouts of diarrhoea are what they dread.

"Those staying outdoors a lot in summer tend to drink water or juices that may be contaminated. Others give in to temptation and eat watermelon slices on the roadside and others may feel a loss of appetite and drink more fluids and eat just one meal a day," says general physician P. Eshwar.

Constipation is closely related to bad nutrition, especially lack of food rich in fibre. Too many processed foods and too little of whole grains, fruits, vegetables and legumes can lead to sluggish bowel movements. Drinking enough water, walking or jogging for at least 20 minutes a day and keeping regular toilet habits may help reduce constipation. The use of laxatives should be limited to extreme cases and not made a habit, doctors advise.

At the other end of the spectrum people get "irritable bowel syndrome," which can lead to diarrhoea. "One or two loose motions may be nature's way of getting rid of toxic substances faster and need not worry anyone. Beyond that it could weaken the system, especially due to dehydration."

Black tea with lemon is a traditional remedy that works. Other types of herbal teas, now found in most supermarkets, may help too. An old Indian remedy is diluted buttermilk. "Generally in summer, food should be light and only mildly spiced and never contain too much fats. Loss of appetite is normal, and if smaller meals are supplemented with nutritious liquids like fruit juice made at home, you can remain healthy and with fewer complaints of indigestion," Dr. Eshwar says.

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