We’ve all been there: that moment when you just need to have a burger (or a milkshake or a bag of potato chips), and nothing else on Earth will do. But why exactly do we have food cravings? And what do they mean?

It’s a popular belief that cravings are the result of nutritional shortfalls. “There is very little science-based evidence on food cravings linked to nutritional deficiencies,” says Sharon Palmer, RDN, author of The Plant-Powered Life. “And if food cravings were related to something you need, then wouldn’t you be craving kale or apples, not ice cream and French fries? Instead, people tend to crave foods that are rich in fats, carbs, and sugar.” (Especially sugar, according to a new study.)

This doesn’t mean that food cravings aren’t real. It’s just that your hankering for pizza is probably linked to emotional needs—seeking a comfort food that releases feel-good chemicals in the brain during a time of stress, for example—not nutritional ones.

Other studies show that cravings can crop up simply because you’re on a restrictive or monotonous diet and want what you can’t have.

That said, there are some cravings that really do signal health problems. Here are 5 cravings to look out for.

Water Could be: Diabetesn Excessive thirst is an early symptom of diabetes—but this isn’t just the craving for water that hits when you finish a workout. This is far more pronounced thirst that’s also typically coupled with excessive urination. If you have diabetes, sugar builds up in the blood, and your kidneys have to work extra hard to filter and absorb that sugar. But sometimes they can’t keep up, so the extra sweet stuff is diverted into the urine. This means frequent pee breaks, which in turn leave you thirsty for more water. For more

Tips For Shopping Online

1. For those who have questions while shopping, look for a live chat function on the online store. Many big brands (and even some boutique stores) now have this functionality. You are able to chat immediately with a customer service representative to repair any issues or answer any questions prior to buying. That can provide you with a lot of peace of mind.

2. Speak to your friends regarding their favorite web stores. There are millions of sites out there, and there is no method for you to find them all yourself. Talk to the people you know to find out who the reputable online retailers are, and where they like to shop. This can save you a lot of time and energy.

3. When you are making a purchase online, ensure that you use credit cards to pay for the transaction. Charge card users are protected against fraud by federal law and are only accountable for $50 in these cases. Some card agencies will even go so far as to wave the $50 for you, which means you will not be out of pocket.

4. When shopping online, choose the best shipping policy. Often companies offer expedited shipping. However, many times getting the product one day earlier can cost you as much as twice the normal shipping price. Therefore, if you can wait on the product to arrive using normal shipping instead of expedited shipping, choose standard shipping to save money.

5. Discover the online store's return policy. Should you be considering making a purchase on an item that you may want to return, be sure you find out if returning the item is definitely an option. Sometimes when you shop online, items can not be returned and you may not want to be saddled with an unwanted item.

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