The Truth Behind Trendy Diets
April 9, 2021

Summer has always been the time of year we see trendy diets pop up left and right, with no telling how long people will stick to them or how effective they will actually be. While circumstances this year have us seeing less of the beach and more of our living rooms and kitchens, nothing stops us from trying to be as healthy as we can be.

In-house registered nutritionist and dietician Jo Sebastian


In a recent study by the REBEL team, we found that 8/10 Filipinos have tried dieting for weight loss, but only 30% of them got their desired results. Shocked by the low success rate, we brought in our in-house registered nutritionist and dietician Jo Sebastian, to help us break down the truths behind some of the most common diets:

1. Intermittent Fasting

Intermittent fasting or ‘IF’ is one of the most common phrases in the dieting world right now. So what exactly is it? First of all, it isn’t really a diet, but rather an eating schedule that involves eating for a period of time, for example 8 hours and then fasting for the remaining 16 hours (not eating anything). The general concept is that by eating 1 less meal you’ll decrease overall calorie intake which can lead to weight loss. There are also other potential benefits that have been shown in animal studies such as improvements in insulin sensitivity, help with cholesterol and gut health as well as increases in human growth hormones. 


So is it for you? It depends! If it can fit with your overall lifestyle then you can try and see what works for you. It’s always important that when you do finish your fast and eat, you’re getting a wide range of nutrients. Also, be mindful of binging, even if you’re only eating for 8 hours of the day, if you eat more calories than you need this won’t result in weight loss. Finally, it isn’t advised for pregnant and lactating women, and those with diabetes, eating disorders, and acid reflux, among others.

If losing fat is your main concern, check out Jo's tips on how to achieve sustainable fat loss.


2. The Ketogenic or 'Keto' Diet

‘Keto’ as it’s commonly referred to is a very low-carb diet that if followed correctly will get your body into a state of ‘Ketosis’ and so that your body starts using fat as its main energy source instead of carbohydrates. A Keto diet typically minimizes or even eliminates bread, rice, oats, pasta, starch, and some fruits and veggies and usually consists of your calories coming from 20% protein, 75% fat, and just 5% carbohydrates. Its benefits can include better blood sugar control for some and an increase in satiety of meals. 


A ketogenic diet can work for quick weight loss, many people find that by reducing consumption of carbohydrates this will reduce water weight in the first few days, but in the long run weight loss is dependent on the total energy balance equation of calories being consumed and being used. While there are advocates for this particular diet, it can be lacking in many nutrients; certain fats chosen can increase the risk of heart disease; and strictly following the diet can cause obsessive behaviors around eating.

Before you cross out carbs from your meal plans, read up on why carbs aren't really the enemy.


3. No-Rice Diet

The No-Rice Diet focuses on substituting rice with other carbohydrate sources, or by loading up on protein and fat in place of rice. Especially here in the Philippines there can be a fear towards rice, but is this rational? Eliminating carbohydrates such as rice can help improve blood sugar control and is great for those with PCOS and diabetes, and those experiencing pulmonary diseases like COPD. It isn’t however a magical tool for weight loss, and a balance of nutrients is still needed for those who choose to follow this diet. Remember there are no ‘good’ or ‘bad’ foods if they are consumed in moderation. Also try not to get too hung up on white vs. brown rice, the most important factor is the volume, remember to serve appropriate portion sizes!

Want to nail down the basics on diabetes? Check out Jo's video on its types, causes, and simple lifestyle changes you can make to reduce the risk of diabetes.

4. Vegetarian Diet

There is a rising trend with people following vegetarian diets, which exclude animal-based products like meat, seafood, chicken and vegan diets which go further and exclude eggs, and dairy products. There are also other kinds of vegetarian diets that fall under this umbrella term too, like: ovo-vegetarianism (can consume egg), lacto-vegetarianism (can consume milk),  and ovo-lacto-vegetarianism (can consume egg and milk). 


Depending on one’s chosen food sources, a vegetarian diet can reduce the risk of heart disease, hypertension, and diabetes. While it can be good for overall health, proper education on healthy substitutes and sources of protein and iron is vital. A common mistake here is taking out animal products in one’s diet without finding proper protein, iron, and vitamin B12 substitutes, which leads to nutritional deficiencies in the long run. Those who subscribe to this type of diet do it for either health reasons, environmental advocacy, or both.

Check out some vegetarian-friendly recipes here.

Whichever diet you choose to follow the most important factor for weight loss is achieving a calorie deficit and being consistent. Diets can fail if they are too complicated and not followed. Jo suggests that instead of taking out certain food groups from our diet, we should focus on incorporating healthy products like fruits, veggies, whole grains, lean protein, unsaturated fats, and water. And when it comes to starting any diet, longevity and sustainability should be considered.


“The best diet for you is the one that best fits your available food sources, and the lifestyle that you have,” she says. There is no need to remove certain food from our diet, but rather, take everything in moderation instead.


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REBEL is the #1 Health & Fitness App in the Philippines with a growing community of over 150,000 users. The first of its kind in the country, it was launched by Erwan Heussaff, Nico Bolzico, Gilles Hage, and Josh Nedeljkovic with Filipinos in mind, and combines the best of fitness, food, and wellness into one app—for free!