Intermittent fasting (IF) has been gaining significant attention over the last few years. Especially among those who are eager to adopt healthier lifestyles. While many people might jump to the conclusion that IF is just another weight-loss fad, there’s much more to this practice than meets the eye. In this blog post, we will explore the proper way to intermittent fast. As well as the reasons why it should not be used solely as a weight loss tool. And the numerous health benefits it can provide, particularly for individuals over the age of 40. Our goal is to help you make informed decisions about your well-being and how to incorporate intermittent fasting into your daily routine.
What is Intermittent Fasting?
Intermittent fasting is an eating pattern that alternates between periods of fasting and eating. Instead of focusing on which foods to consume, IF emphasizes when to eat them. This method has been practiced for centuries. With historical evidence suggesting that various religious and cultural traditions have integrated fasting rituals as part of their observance. Common IF practices include the 16/8 method, 5:2 diet, and alternate-day fasting.
Why Intermittent Fasting Should Not Be Used Solely as a Weight Loss Tool

While intermittent fasting can certainly contribute to weight loss for some individuals, relying on it exclusively as a weight loss tool overlooks the multitude of health benefits this practice offers. It will also lead to unsustainable results.
- Short-term versus long-term results. Relying on IF solely as a weight loss tool can lead to temporary results. A more sustainable approach to weight management should incorporate a balanced diet and regular physical activity.
- Calorie restriction vs. quality of nutrition. With an exclusive focus on losing weight, people may overlook the importance of consuming nutrient-dense foods. Rather than obsessing over caloric intake, it’s crucial to maintain a balanced diet to ensure overall health.
- Unrealistic expectations. Like any other eating plan, intermittent fasting is not a one-size-fits-all solution. It may not be suitable for everyone and expecting miraculous weight loss results can lead to disappointment.
- Focus on overall health. It’s essential to prioritize overall health and well-being, including mental and emotional wellness, rather than solely concentrating on weight loss. Weight should not be the only indicator of good health.
The Health Benefits
For people over 40, the health benefits of intermittent fasting can help mitigate age-related changes. It also supports overall well-being by improving hormonal balance, cognitive function, and cardiovascular health.
- Improved insulin sensitivity. IF has been shown to improve insulin sensitivity, which can lower the risk of developing type 2 diabetes.
- Enhanced cognitive function. Research suggests that intermittent fasting may support brain health by promoting the production of brain-derived neurotrophic factor (BDNF). This is a protein that plays a critical role in learning, memory, and overall brain function.
- Reduced inflammation. Fasting periods may help reduce inflammation and oxidative stress, contributing to a healthier aging process and improved overall well-being.
- Autophagy. This cellular process involves the breakdown and recycling of damaged cells and proteins. IF has been found to promote autophagy, which is crucial for maintaining cellular health and preventing age-related diseases.
- Improved cardiovascular health. Intermittent fasting may improve heart health by reducing blood pressure, cholesterol levels, and inflammation.
Intermittent Fasting for People Over 40
As we age, our bodies go through various physiological changes, including alterations in metabolism, hormonal balance, and muscle mass. Intermittent fasting can be especially beneficial for individuals over 40 as it may help mitigate some of these age-related changes.

- Hormonal balance. IF can help optimize hormone levels, such as growth hormone (GH) and insulin, which tend to decline with age. This can lead to improved muscle mass, strength, and overall vitality.
- Weight management. We’ve stressed that IF should not be used solely as a weight loss tool. However, it can still help people over 40 manage their weight when combined with a balanced diet and regular exercise. This is especially important since maintaining a healthy weight can become more challenging with age due to changes in metabolism.
- Gut health. Intermittent fasting may have a positive impact on gut health by promoting a diverse and balanced gut microbiome. This is crucial for overall health and immune function.
- Longevity. Some research suggests that intermittent fasting might promote longevity by reducing the risk of age-related diseases, such as cardiovascular disease, diabetes, and certain types of cancer.
How to Intermittently Fast Properly
To fully reap the benefits of intermittent fasting, it’s essential to adopt a personalized approach, which involves selecting the right method, listening to your body, and maintaining a balanced diet during your eating window.
- Choose the right method. There are various intermittent fasting methods to choose from, such as the 16/8 method, the 5:2 diet, or alternate-day fasting. It’s crucial to select a method that best suits your lifestyle, health needs, and personal preferences.
- Listen to your body. Always pay attention to your body’s signals and adjust your fasting plan as needed. If you experience symptoms such as dizziness, extreme fatigue, or constant hunger, consider modifying your fasting window or seek guidance from a healthcare professional.
- Prioritize nutrient-dense foods. During your eating window, focus on consuming whole, nutrient-dense foods that provide essential vitamins, minerals, and macronutrients to support overall health.
- Stay hydrated. It’s important to drink plenty of water during both fasting and eating periods to stay hydrated and support proper bodily functions.
- Don’t overcompensate during the eating window. It can be tempting to overeat during the eating window, but this can hinder the benefits of intermittent fasting. Aim for balanced, moderate meals, and avoid consuming excessive amounts of high-calorie, low-nutrient foods.
- Combine IF with regular exercise. To reap the full benefits of intermittent fasting, especially if you’re over 40, it’s essential to incorporate regular physical activity into your routine. This will not only help with weight management but also improve overall health and well-being.
- Consult a medical professional. Before embarking on any new dietary or lifestyle plan, consult with a medical professional to ensure it’s suitable for your individual needs, especially if you have pre-existing medical conditions or are taking medications.
Intermittent Fasting and Ketosis
Ketosis is a metabolic state in which the body burns fat for fuel instead of carbohydrates. Typically, entering a state of ketosis requires a period of carbohydrate restriction. With intermittent fasting, even after a 12-hour fast, the body may begin to shift towards ketosis as glycogen stores become depleted, and the body starts utilizing fat for energy. This process can be beneficial for weight management and overall metabolic health.
The Importance of Adequate Protein Intake
While practicing intermittent fasting, it’s crucial to prioritize protein consumption during your eating window. Adequate protein intake is essential for several reasons:

- Muscle maintenance and growth. Consuming sufficient protein helps to preserve and build lean muscle mass, which is especially important as we age and experience natural declines in muscle mass.
- Satiety. Protein has been shown to promote feelings of fullness, which can help prevent overeating and assist with weight management.
- Metabolism. A higher protein intake can help boost metabolism, as the body expends more energy to digest and metabolize protein compared to carbohydrates and fats.
- Immune function. Protein is necessary for the production of antibodies, which are crucial for a robust immune system.
To ensure you’re getting enough protein during your eating window, consider incorporating a variety of protein-rich foods, such as lean meats, fish, eggs, dairy products, legumes, and plant-based protein sources like tofu and tempeh. Tailor your protein intake to your individual needs, activity levels, and personal preferences.
Our Personal Experience
My husband and I have personally adopted a 12-14 hour fasting period in our intermittent fasting journey. While this may seem shorter than some of the more popular IF methods, such as the 16/8 method, it still falls under the umbrella of intermittent fasting. The key reason for this is that we are still incorporating distinct periods of fasting and eating, which allows our bodies to experience the benefits of a fasting state.

By sticking to a 12-14 hour fasting period, we have found it easier to integrate IF into our daily routines, allowing for a more sustainable and flexible approach. This method works well for us because it provides enough fasting time to initiate some of the positive metabolic and hormonal changes associated with IF while still giving us the flexibility to enjoy meals with family and friends without feeling overly restricted.
The 12-14 hour fasting period has been an effective and sustainable approach to intermittent fasting for my husband and me. By understanding how IF affects ketosis and the importance of consuming adequate protein during our eating window, we have been able to experience the health benefits of intermittent fasting while maintaining a balanced and enjoyable lifestyle. Remember, the key to success with intermittent fasting is finding a method that works best for your individual needs and preferences, allowing for a sustainable and healthy approach to improved well-being.
Final Thoughts
Intermittent fasting can be an effective tool for promoting overall health and well-being, particularly for individuals over the age of 40. However, it’s crucial to remember that IF should not be used exclusively as a weight loss tool. Instead, focus on incorporating intermittent fasting into a well-rounded lifestyle that prioritizes balanced nutrition, regular exercise, and a commitment to long-term health. By doing so, you can make the most of this time-honored practice and enjoy the numerous benefits it has to offer.

