Say no to food carts: Though these should be avoided all year round, they are definitely a strict no-no during summer season. Rise in temperature goes hand-in-hand with water scarcity, which in turn means compromise on washing properly in the kitchen. And that can have a bad effect on your system when you eat food that is not washed properly before cooking or cooked by hands that have been not thoroughly cleaned. Gastroenteritis, amoebic dysentery and diarrhoea are common during this time of the year.