10.08.26
|5 MIN READ
Recently, water fasting and juice detox programs have gained popularity as quick ways to lose weight and "detox" the body. But are these methods really safe?
Let's hear from our clinical nutrition specialist, Dr. Audria Graciela, Sp.GK, FINEM.
The answer is: not necessarily.
Water fasting is a fasting method in which a person consumes only water, with no food or calorie-containing beverages, for a certain period of time.
Juice detox, on the other hand, typically involves consuming only fruit or vegetable juices for several days while avoiding whole foods.
Both approaches involve severe calorie restriction.
Yes—but that doesn't necessarily mean you're losing body fat.
During the first few days, most of the weight loss usually comes from:
Depletion of glycogen (stored carbohydrates) and the water associated with it.
Reduced calorie intake due to the absence of solid foods.
If prolonged, the body may also begin breaking down muscle tissue for energy. This can lower your metabolic rate and make it easier to regain weight once the program ends.
Your body already has its own natural detoxification system.
The liver, kidneys, lungs, and digestive tract work continuously to eliminate waste products and toxins from the body. To date, there is no strong scientific evidence showing that a several-day water fast or juice detox can cleanse the body more effectively than these natural processes.
Extreme fasting or consuming only juice for several days may increase the risk of:
Protein and essential nutrient deficiencies
Loss of muscle mass
Fatigue, dizziness, and difficulty concentrating
Blood sugar imbalances (especially unsafe for individuals with diabetes)
Dehydration and electrolyte imbalances
These methods are not recommended for pregnant women, breastfeeding mothers, older adults, children, or individuals with chronic medical conditions due to the increased risk of complications.
A healthier and more sustainable approach to weight loss includes:
Following a calorie-controlled diet that still provides adequate essential nutrients.
Consuming enough protein to preserve muscle mass.
Eating a balanced diet rich in fruits and vegetables.
Engaging in regular physical activity.
Getting adequate sleep and managing stress.
When appropriate, a personalized weight management program can also be developed with a clinical nutrition specialist, based on your individual health needs and goals.
A 7-day water fast or juice detox is not a method that can be recommended for everyone. Although rapid weight loss may occur, much of it is often due to water and glycogen loss rather than body fat. These approaches may also increase the risk of nutrient deficiencies and muscle loss.
If your goal is healthy, long-term weight management, adopting sustainable lifestyle changes—including a balanced diet and regular exercise—is a much safer and more effective strategy.
For personalized nutrition advice and weight management support, consult our nutrition specialists at akasia 365mc.
