Our body requires calories to maintain daily functionality. Excessive calorie restrictions may cause fatigue and nutrient deficiencies.
In short term, you may lose some weight, but it might not be a healthy way to reduce your weight. To lose weight, you need to determine your daily calorie requirement based on your BMI.
Yes, the calorie restriction can harm your metabolism. If you restrict your calorie intake too much it can lower your metabolism.
Usually, we require a minimum of 1,200 calories to perform daily activities. If you execute strenuous physical activities, you may need more calories. If you are maintaining calorie restriction and heavy physical activities at the same time, it can lower your immune defenses.
The first thing you need to do is determining the number of calories that’s right for you. It will help you to reduce the risk of developing negative health consequences due to calorie restrictions.