Weight loss is not just about eating less, but also about how you schedule your meals. Nowadays, intermittent fasting has become a trend chosen by many people as a natural, simple but effective weight loss method. Without completely eliminating any food group, this method helps the body take advantage of natural biological mechanisms to burn fat and restore energy. But how does intermittent fasting really help you lose weight, and is it safe for you?
What is intermittent fasting and why does it help you lose weight?
Unlike strict diets, intermittent fasting does not dictate what you should eat, but when you should eat. People who apply it will divide the time of day into clear “eating” and “fasting” time frames; The most common example is 16:8, which means fasting for 16 hours and eating for the remaining 8 hours.
During the fasting period, when blood sugar levels drop, the body is forced to switch to burning stored fat for energy. This process is called ketosis, which helps reduce fat naturally without cutting too many calories.
In addition, limiting your eating time also helps you control your overall calorie intake more easily, preventing the habit of snacking constantly, thereby helping you control your weight effectively and not worry about gaining weight.
What are the benefits of intermittent fasting for weight loss?
Here are the top 4 benefits:
1. Increased fat burning efficiency
When the body enters a fasting state, insulin levels decrease and growth hormone (HGH) increases. This combination stimulates fat breakdown and energy metabolism, helping to reduce excess fat, especially in the abdomen.
2. Helps control cravings
Another benefit of intermittent fasting is that it helps stabilize hunger and satiety hormones (ghrelin and leptin). When your body gets used to a fixed eating cycle, you will feel less cravings for snacks and learn to listen to your body’s true signals instead of eating based on emotions.
3. Helps reduce calories without too much calculation
Instead of having to measure each portion, intermittent fasting naturally helps you reduce your calorie intake without being too restrictive. Shortening your “eating window” makes you eat less and still feel satisfied, making weight loss easier and more sustainable.
4. Improves metabolism and overall health
Many studies show that intermittent fasting can help improve insulin sensitivity, reduce inflammation and stabilize blood sugar levels, all of which are important factors in weight control. In addition, the body also has “rest” time to repair itself and remove damaged cells.

Side effects and things to note when fasting intermittently
Despite its many benefits, intermittent fasting is not an easy choice in the beginning. When you first start, you may experience:
- Feeling hungry, tired or have difficulty concentrating.
- Irritability, nausea or mild headaches.
- Temporary insomnia or constipation.
These symptoms usually disappear after about a month as your body gets used to the new biological rhythm. However, if you feel exhausted, dizzy or lose weight too quickly, stop and consult a doctor or nutritionist for appropriate adjustments.
Who should and should not apply the intermittent fasting method
Intermittent fasting is suitable for most healthy adults, but should not be applied to:
- People under 18 years old.
- Pregnant or breastfeeding women.
- People with a history of eating disorders.
- People with diabetes or taking medication that requires eating.
If you are an athlete or regularly do high intensity training, your body needs a more regular supply of energy, so you should consult carefully before applying.
How to use intermittent fasting effectively to lose weight
Intermittent fasting is not just a fad, but has been proven by many studies to help improve metabolism, control calorie intake and support sustainable weight loss. However, if applied incorrectly, the body can react in the opposite way. This makes you tired, crave food and is difficult to maintain in the long term. Therefore, starting correctly is the decisive factor to help this method really work.
Here are some tips that can help:
- Start slowly: Instead of fasting for 16 hours right away, you can try the 12:12 frame for a few days to let your body get used to it.
- Drink plenty of water: Drinking water, herbal tea or black coffee without sugar during the fasting period helps reduce hunger.
- Eat smartly within the allowed time frame: Prioritize natural foods such as green vegetables, fruits, lean proteins, whole grains and good fats.
- Avoid compensating: Don’t treat mealtimes as “compensation time.” Eating too many calories will still make you gain weight even if you fast at the right time.
So, intermittent fasting doesn’t help you lose weight instantly, but it is a smart strategy to reset the way you eat. When used correctly, this method can help you burn fat effectively, improve your metabolism and maintain your ideal weight without having to painfully count every calorie. Most importantly, remember that intermittent fasting is just one part of a healthy lifestyle. Combined with a balanced diet, enough sleep and regular exercise, it is the path to help you achieve the healthiest, lightest and most sustainable body.

