Intermittent Fasting: Does It Really Work?
Intermittent fasting is getting a lot of attention nowadays as a way to maintain weight and improve metabolic health. Some people follow defined eating periods such as 16-8, while others may simply stop eating at dinner time. But do these methods really work? Do you need to skip breakfast or spend long times going without food in order to get the benefits?
For most healthy adults, it may not be necessary to adhere to a rigid fasting regimen, but instead a consistent overnight fast of 12 hours is sufficient. Instead of following extreme diets, this means reducing late-night eating and scheduling regular meals throughout the day.
Table of Content:
- The Science Behind a 12-Hour Overnight Fast
- Why Finishing Dinner Early May Be Better Than Skipping Breakfast
- Does Intermittent Fasting Really Work?
- 12:12, 14:10 or 16:8: Which Is Better?
- Who Should Be Careful With Intermittent Fasting?
- How to Make a 12-Hour Fast Healthier
- Know Your Metabolic Health Before You Start
- Conclusion
The Science Behind a 12-Hour Overnight Fast
Today’s lifestyles allow us to eat throughout the day from early breakfast, through lunch and snacks to sugary drinks, and even one last snack before bedtime.
A long sleep at night ensures a time without food. Thus, while one might make a 12-hour overnight fast, objectives are achieved.
For instance, an individual who has their last meal at 7:30 PM and eats breakfast at 7:30 AM would have completed a 12-hour long fast.
While one eats, the body is in the process of absorption of nutrients from the food and makes use of glucose for energy. The longer the time without food, the lower the level of insulin in the body, and the body starts using stored energy to a greater extent.
What one wants to achieve is not starvation. What one wants to achieve is a time in which food is not ingested.
Why Finishing Dinner Early May Be Better Than Skipping Breakfast
Although some may think of intermittent fasting as not eating breakfast when they’re supposed to have it and eating at night instead, in reality, the timing of when you eat is much more important.
Our metabolism works according to the circadian cycle, which is the body’s internal clock (the circadian rhythm). Some metabolic processes differ from day to night, and the latest studies show that late-night eating could be worse for glucose metabolism than its earlier counterpart.
Eating late at night usually implies making poor food choices. Most of the time, it is associated with popping something sweet in a vague desire to please oneself, which usually brings nothing good.
The routine of intermittent fasting could consist of the following:
Dinner at around 7–8 pm ⇒ no eating later than that ⇒ breakfast at around 7–8 am.
This way many will find it easier to practice intermittent fasting than skipping breakfast regularly.
Does Intermittent Fasting Really Work?
For some individuals fasting can help them eat less food in general, allow them to stop the habit of snacking too frequently and help regulate their eating pattern.
Despite this, the fact that fasting can help will never make it an easy option that allows people to eat anything.
For example, someone consuming good foods, such as fruits and vegetables, whole grains, legumes, healthy fats and enough protein, will have a completely different diet from a person who consumes mainly junk food, sweets and beverages.
It is important to note that an eight hour eating window will not make a low-quality diet acceptable.
In terms of long-term health, eating probably matters as much as eating time.
12:12, 14:10 or 16:8: Which Is Better?
There is no one size fits all when it comes to fasting methods.
12:12: Taking twelve hours off from eating, then eating within the next twelve hours is a basic way to get the fasting process started. For instance, a person can eat from 8 am to 8 pm.
14:10: This method allows fourteen hours of fasting and eating in the remaining ten hours. Some people may find this method easy after they become accustomed to 12:12.
16:8: This method allows sixteen hours of fasting and eight hours of eating. This is suitable for some adults, but fasting is not necessary for a healthy lifestyle.
The best approach is to get the diet that provides optimal nutrition, suits your health condition, and can be adhered to with consistency.
Who Should Be Careful With Intermittent Fasting?
Intermittent fasting is not something that is appropriate for everyone. Those individuals that might need to be cautious or supervised by a doctor include:
- Women who are pregnant or are nursing
- Kids and teenagers
- Individuals with a current or past eating disorder
- Persons who have diabetes that is uncontrolled
- People who take insulin or another glucose treating medicine with a doctor’s supervision
- Older adults who are weak
- Anyone with low weight
- Those who have any health issue that requires eating at specific times in a day
People with diabetes need to be careful since fasting may lead to lowering blood glucose dangerously low levels depending on individual situation.
How to Make a 12-Hour Fast Healthier
Begin your meal timing with regularity instead of fervour. Have your dinner at roughly the same time every day, and don’t engage in your regular post-dinner snacking.
Add vegetables, healthy fats, whole grains, pulses or legumes, and good-quality proteins to your meals, and avoid sugary drinks and highly processed foods.
Water is very important for the fasting period. Long hours of sleep and regular physical activity also play a very important role.
Know Your Metabolic Health Before You Start
In case you are doing intermittent fasting to enhance your metabolic health, then understanding your baseline health will contribute to the effectiveness of your attempts.
Preventive health assessment includes measurements such as fasting blood sugar testing, HbA1c testing, lipid profile testing, liver function testing, kidney function testing, thyroid testing (where necessary), and assessment of body composition.
These parameters provide valuable information regarding blood glucose control, cholesterol levels, organs health, and body composition over a certain period.
Sikund Diagnostic offers a full range of diagnostic tests which helps in preventive health assessment and communication with doctors.
Conclusion
The value of intermittent fasting must not be overstated and it does not have to be taken too far. Some healthy adults can rely on the advice of finishing dinner much earlier and following 12-hour fasting overnight, which makes it a reasonable approach.
Longer intermittent fasting plans such as 14:10 or 16:8 could work for some individuals, but they are not always a necessity. Food quality, physical activity, sleeping habits and weight control also hold great importance for lifestyle.
The most suitable fasting plan is not necessarily the longest one. It is the one that is safe, nutritionally balanced and sustainable for you.
