{Stomach} upsets (symptoms of {nausea}, sickness, pain) are common & usually caused by {bacterial} infection or changes of environment (jetlag, different diet/eating habits). If you suffer from {diarrhea}, avoid alcohol, fresh vegetables, fresh peeled fruit, fatty & spicy foods, milk products, raw shellfish & ice cubes. Freshly cooked foods are safest. Milk should be boiled, unless it is pasteurized.
Be particularly fastidious about washing your hands before touching food. Replace lost fluids regularly to prevent {dehydration}. Special rehydration fluids are available but remember to use treated or bottled water. If {diarrhea} persists for more than 24hrs, seek medical advice immediately. Children & the elderly can be seriously affected by dehydration if not treated early.
