Despite being one of the most controversial regimes, Whole 30 is also increasingly popular. This diet involves cutting out all inflammatory foods and beverages for one month, and eating three clean meals a day instead. It aims at changing the way we feel in just 30 days, by cleaning our organs of added sugars, alcohol, legumes, dairy and processed foods.
The danger is that with this diet you remove a number of food groups from your diet, replacing them with foods high in sodium and cholesterol. It has also been branded by some dieticians as “unsustainable”, and there is a risk that you might put the pounds you lost back on once the 30 days are over.
One of the most talked-about diets out there today, the Keto diet is high on fat, low on carbohydrates, and promises fast results.
By cutting out bread and sugar, the body enters a state of ketosis, which means it starts burning fat rather than carbs. In order to achieve this, the intake of carbs and protein has to be limited and intake of fruit and vegetables reduced.
This diet has become popular among Hollywood celebrities thanks to its fast results, but experts have warned that an indefinite state of ketosis can cause extreme fatigue and muscle loss.
Over the recent years, high-protein diets have become really popular. According to research by the cereal company Weetabix, half of UK consumers are proactively adding extra protein to their meals.
The popularity of protein has led to the spread of products such as protein shakes, protein bars and even high-protein bagels.
There are a number of well-known diets that demand a high intake of protein, such as the Paleo diet and Optavia.
Some studies have concluded that those trying to gain muscle can benefit from a high-protein diet, as they need double the recommended daily allowance of protein.
However, in his book, The Truth About Food, doctor David L Katz claims a high-protein intake over a lifetime can hurt the liver, kidneys and skeleton.
Similarly to the Mediterranean diet, the Nordic diet places emphasis on whole grains and is low on sweets and red meat.
This diet relies on locally-sourced ingredients from Finland, Iceland, Norway, Denmark and Sweden, which are famous for their fat fishes, legumes, vegetables and whole grains.
It has been named in the US News & World Report list as one of the best new diets for 2019, thanks to its plant-heavy eating plan.
The big difference between the Nordic and the Mediterranean, which is considered by experts to be one of the most balanced diets, is the use of rapeseed oil rather than olive oil.
Another popular trend seems to be replacing food with juices, relying on them to feed us with all the vitamins our bodies require.
You just need to open Instagram to see celebrities like the Kardashian family promoting a variety of juices that promise to detox and clean your organs.
This diet involves blending fruit and vegetables to drink as a juice instead of consuming solid foods. It can be a good option if you are not used to eating as many greens as you should, but ingesting a larger amount of fruit and vegetables means you might be consuming higher levels of sugar and calories than you should be.
Maybe one of the most radical options in this list, the OMAD diet suggests having only one meal a day.
This diet entails eating your entire daily calorie intake in one meal, and then fasting for the rest of the day.
It is recommended you stick to the same schedule throughout the diet. You are allowed to drink calorie-free drinks during the day, but nothing else.
Besides guaranteeing weight loss results, some studies point out that this intermittent fasting helps to regulate blood glucose levels.
However, it can also lead to hunger, fatigue and lack of energy. And because no foods are off-limits during the hour you are allowed to eat, you might end up making the wrong choices and eating unhealthy food.