Yes, supermarkets are convenient. You get to choose from a variety of things and most things you find there are ready made which reduces your work. But before you get your groceries from the supermarket, make a note of foods from nutritionist Priya Kathpal that you should never get from the supermarket.
Bread: The bread stocked in a supermarket is baked from chemical flour to increase its shelf life. The dough used also contains taste enhancers and surfactants. It is best that you buy bread from small bakeries and ask about the manufacturing process before you get your hands on them.
Ground spices: Ground spices you get in the supermarket has cheaper alternatives mixed in. For example, cinnamon is replaced with cassia and saffron with safflower. Plus, a chemical, sodium glutamate is added to intensify the taste. It is best that you grind whole spices at home.
Mayonnaise: Mayo typically should consist of vinegar, vegetable oil, eggs and spices. But the one you find in the stores contains preservatives, flavouring agents, stabilisers and added sugar. So if you love mayonnaise, the best bet would be to prepare it at home.
Foods with fruit fillings: The fruit yoghurt and strawberry buns may look appetising, but the fruit fillings contain preservatives and added flavours that make them extremely high in sugar. In fact, the fruit makes up for only 20 percent of the filling; the rest is only flavouring agents.
Bottled tea: The bottled iced, tea or green tea found in supermarkets is mostly water, sugar, soda and flavouring agents. Instead of being lazy, it makes more sense to brew some green tea at home.
Processed meat: Sausages and other processed meats contain nitrites which convert to potent nitrosamines which are potential carcinogens. It is, therefore, best to buy fresh meat, cook it yourself and add it to your favourite dish.
Cut vegetables: The ready to eat cut salads and vegetables can be one of the most dangerous foods at the supermarkets. They not only contain preservatives but have harmful bacteria that can cause intestinal diseases. Buy whole fruits and vegetables and thoroughly wash them.