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xiaoli xu

by xiaoli xu in News

20 February, 2019 (0) Comments


      Food cravings make it into the top few reasons why people eat junk food, overeat, and quit diets. They’re not fun! But a lot of people are way more concerned than they really need to be – looking at the research on food cravings is actually pretty comforting because it shows a common pattern of cravings reduction after a few weeks of following a diet.

It’s not about the macros

In an interesting twist, the research doesn’t indicate that the macronutrient (protein, fat, and carbs) distribution of your diet matters a lot for cravings. Everyone is unique, but statistically speaking, changing the macronutrient ratio of your food probably won’t change your cravings either for specific foods or for general categories of foods (candy, starches, greasy food). High-protein diets don’t perform much better than any other type of diet for preventing food cravings, and contrary to popular belief, restricting carbs doesn’t cause carb cravings either. In fact, restricting carbs might help reduce carb cravings, although this study was in women with cancer, which is a very specific group with special health needs and results might not apply to the general population.

In other words, you don’t automatically start craving whatever you’re not eating, and there’s no magical macro scheme that will completely demolish all cravings. Of course, it’s important to avoid deficiency – if your diet is deficient in protein, that might cause some weird craving issues. But assuming this isn’t a problem, research has generally found that macronutrient tinkering probably won’t help much with cravings

If it isn’t the macros, what is it? Studies show that the real key isn’t which diet you’re on but how consistently you follow it and how long you’ve been doing it.

Initial cravings ease up after some time on a diet

Contrary to the popular belief that restriction causes cravings and we always crave what we can’t have, we actually learn to stop craving what we don’t get – if only we can avoid it for a few weeks.

It doesn’t actually take that long, either! In this study, researchers gave subjects a low-calorie and low-carb (about 14% energy from carbs, so pretty low but not keto-level low) diet for just 4 weeks. By the end of the 4 weeks, cravings for sugar and starch were both down by 12%, while cravings for fatty junk food (ice cream, etc.) were down by 11%. Of note: this study was funded by Atkins Nutritionals, which provided some food for the participants, but in the slightly longer term, this review of multiple studies found strong evidence that any kind of calorie restriction reduces cravings by at most 12-16 weeks on the diet.

For the keto folks, this study tested keto specifically – although be aware that they used a commercial keto diet product and that the authors of the study are involved with the company that sells the product. The researchers found that over 4 months, cravings declined rapidly and significantly, with the big downturn in cravings kicking off just as subjects got into ketosis (aka right away).

Based on these studies and reviews, it looks like most people can expect an initial reduction in cravings within the first month or so of following a healthy diet consistently. And one more optimization tip…

Restricting the frequency of craved foods seems to work better than restricting the quantity

So, food cravings decrease after some time on a diet, and the macronutrient (protein, carbs, and fat) composition of that diet doesn’t affect this to a huge degree. But one more thing that might actually affect food cravings is how (if at all) you work craved foods into your diet.

This study compared the frequency of eating craved foods to the number of foods eaten. When people try to lose weight and avoid junk food even though they’re craving it, they can…

  • Eat smaller servings of foods that they crave (fun-size candy bars instead of real candy bars; small fries instead of a large; those weird 100 calorie packs of miniature Oreos instead of actual Oreos)
  • Eat the same servings, but less frequently (have a real candy bar, but once a week instead of every day)
  • Go cold turkey and stop eating junk food completely.

The paper suggested that changing the frequency of eating craved foods is more effective than changing the amount. In other words, if you want to reduce cravings, it’s better to just save your junk food allowance for a real candy bar once a week, instead of teasing yourself with a mini candy bar every day. Or just go full commitment mode and completely eliminate junk food, if that works for you.

This was an average result – there will probably be some outliers who do a lot better with higher frequency and smaller servings. If that’s you, it always makes more sense to do what works for your own body than to do what works for average people in a study. But this study bears emphasizing if only because general diet advice is so heavily skewed towards eating miniature servings of junk food “because otherwise,  you’ll feel restricted and binge.” That’s not necessarily the case just because everyone repeats it.


repeats it.

Getting over the hump

So the real million-dollar question is: how can real people in the real world actually get through the first few weeks of cravings before the benefits of following their diet kick in and they start seeing the pressure ease up.

Luckily, there are tons of strategies for managing cravings in the moment – here are eight of them, including – and this is really, honestly, scientifically supported – Tetris. Read the article: there’s a whole study on it!

Another technique not listed there is decentering – that’s when you get some distance from your thoughts and just observe your thoughts as thoughts. For example, “wow, I’m craving chocolate right now; that’s a desire I’m having but I don’t really have to immediately go out act on it, any more than I’d act on my urges to snap at my annoying coworkers when I’m having a bad day or.” It helps make the craving feel less powerful, which makes it easier to brush off and get back to your day.

Cravings: there is good news!

We might always hanker after the forbidden fruit for the first month or so on a new diet, but research actually suggests that cravings subside after significant time restricting the food in question. It really does get a lot easier: it’s all about getting yourself over that first bump and into the groove of eating well.

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