Intermittent Fasting: Benefits, Risks and How Singaporeans Can Start Safely

Wondering if intermittent fasting (IF) is right for you? Get to know the benefits, risks, and practical tips that are tailored to the Singapore lifestyle and eating habits.

With demanding jobs, busy home lives, and a limited time to hit the gym, many Singaporeans are seeking alternative ways to improve their eating habits, energy levels, and weight management. One approach that is becoming increasingly popular is intermittent fasting (IF). This eating routine has been widely discussed across social media, wellness communities, and health platforms.

With its growing popularity, many questions arise: Is it safe? Does it work? And most importantly, is it suitable for everyone? We explore what it is, how it works, and what the risks are so you can decide whether it is right for you.

 

What is Intermittent Fasting?

IF is an eating pattern that alternates between fasting and eating windows. Unlike traditional diets, it does not focus on what you eat, but rather when you eat. This means you can maintain your usual diet, but within a structured time frame. There are different methods to this diet routine:

• 16:8: This method involves fasting for 16 hours a day, leaving an 8-hour window for you to eat normally. The good news is that you get to choose when the window begins. Some people would choose to skip breakfast and start eating at noon, allowing them to eat lunch and dinner. 
• 5:2: This method allows you to eat normally for 5 days of the week while cutting back on your caloric intake for the other 2 days. Depending on your dietitian’s or doctor’s advice, the reduction can be up to 20% of your normal calorie intake (typically around 500–600 kcal/day).
• Eat Stop Eat: True to its name, this method requires you to fast for a full day or 24 hours for one or 2 days of the week and eat normally for the rest.

 

How does it work?

As we go about our daily routines, we usually eat three meals a day and snack in between to provide ourselves with enough energy. This means that our body’s stored fat either accumulates over time or remains unused. According to an article, “By going without food for a prolonged period, intermittent fasting encourages our body to tap into stored fat more efficiently for energy. This is known as metabolic switching.”

 

 

Is it safe?

If you are considering practicing IF, it’s important to consult a doctor to ensure it is suitable for your body and lifestyle. It is essential to understand your limits and listen to your body. Over-exercising, not drinking enough water, or eating too little during your eating window can be detrimental to your health. While some individuals may experience an adjustment period that includes hunger pangs, lethargy, and headaches, there are no well-established long-term adverse effects known about IF. However, if you fall under any of these categories, IF may not be suitable for you:

• Children under 18 years old
• Women with abnormal menstrual cycles or those trying to conceive
• Women who are pregnant
• Those who have a history of eating disorder
• Patients who have undergone bariatric surgery
• Individuals with pre-existing medical conditions

 

Potential Benefits Based on What the Science Says

Intermittent fasting is often associated with weight management, but research suggests that its benefits may extend beyond just weight loss. Here are some potential benefits supported by scientific studies:

 

Improved insulin sensitivity

Insulin is a hormone produced by the pancreas that regulates blood sugar (glucose) levels. It allows your body to utilise glucose efficiently for energy so that it is not stored as fat. If your body is more sensitive to insulin, it can use glucose more efficiently for energy rather than storing it as fat. However, if you are insulin resistant, your pancreas will be working hard to produce more insulin. IF allows the body more time to respond to insulin effectively, which may help improve blood sugar control. 

 

Reduced inflammation

Inflammation is your body’s natural protective immune system that responds to anything harmful to your body. Long-term inflammation has been linked to chronic diseases like cancer, heart disease, and Alzheimer’s. IF reduces oxidative stress in your system, which is known to cause chronic inflammation.

 

 

Improved brain function

IF is known to improve the production of Brain-Derived Neurotrophic Factor (BDNF), a protein that is crucial for the survival of neurons and for improving learning and memory. Fasting also triggers autophagy, a healing process that removes damaged cellular debris. Together, these processes may support brain function and cognitive performance.

 

How to Start Safely

If you are considering intermittent fasting. Here are some practical tips to help you begin safely: 

• Start Gradually. Begin with a more manageable 12-hour fasting period and a 12-hour eating window. This allows your body to adjust without unnecessary strain.  Once you feel comfortable, you can move on to the 14/10 or 16/8 methods.
• Maintain Well-Balanced Meals. It is important to focus on the quality of food during your eating window. Avoid overeating when breaking your fast, and instead opt for balanced meals that include complex carbohydrates like Brown Rice or Brown Rice Pasta to feel full longer. Choose healthier oils like Olive Oil with antioxidants and anti-inflammatory compounds when cooking your lean proteins and vegetables. 
• Stay Hydrated. Aim to drink at least two litres of water daily to stay hydrated during both fasting and eating periods. This helps prevent dehydration, reduces headaches, and supports overall bodily functions. 
• Stop When You Need To. If you feel unwell at any point, stop fasting and consult your doctor.

 

 

While intermittent fasting offers a structured approach to improving eating habits, it is not a one‑size‑fits‑all solution. Its effectiveness depends on adopting it in a way that suits your individual lifestyle, health condition, and long-term habits rather than relying on strict or extreme restrictions.

For Singaporeans navigating busy schedules and a vibrant food culture, combining intermittent fasting with balanced, nutrient‑rich meals can create a more realistic and sustainable approach to health. When practiced mindfully, intermittent fasting can help support better eating habits while still allowing you to enjoy the foods you love, leading to a more balanced and sustainable lifestyle.

 

FAQ: Answering Your Questions About Intermittent fasting

What is the most popular intermittent fasting method?

The 16:8 method — where individuals fast for 16 hours and eat within an 8-hour window — is one of the most commonly practised approaches. It offers flexibility and can be easily adapted to everyday lifestyles.

 

What foods should I eat during intermittent fasting?

Balanced meals with fibre, protein, vegetables, and wholesome carbohydrates are commonly recommended. Whole grains, lean proteins, fruits, and healthier cooking oils can help support more balanced eating habits.

 

Can I drink coffee while fasting?

Plain black coffee and water are generally allowed during fasting, but adding sugar or cream may break the fast.