Introduction
Not going to lie I used ChatGPT and the like to help write this article. However IF is something I combined with carnivore to help keep my weight down and regulate my insulin levels. IF can be useful, even for those not on a carnivore diet but in my experience the lower carb you are the easier it is to maintain fasting as the fat adaptation reduces hunger and keeps energy levels higher.
Intermittent fasting (IF) has gained immense popularity in recent years, and for good reason. This dietary approach doesn't focus on what you eat but rather when you eat. By cycling between periods of eating and fasting, intermittent fasting offers a host of health benefits that go beyond just weight loss. In this article, we will explore the multifaceted advantages of intermittent fasting for your physical and mental well-being.
- Weight Management
One of the most well-known benefits of intermittent fasting is its ability to aid in weight management. When you practice IF, your body enters a state of calorie deficit during fasting periods, which can lead to reduced overall calorie consumption. This, in turn, may help you shed excess pounds and maintain a healthy weight. Additionally, IF has been shown to enhance fat loss while preserving lean muscle mass, promoting a more favourable body composition. Personally I am not sold on the method of weight loss being calories in vs calories out.
I don't think there is a definitive answer to this as some others have suggested. We are not machines and we don't use energy in the way calories get measured. I think calories can be a useful measure but again, as others have said, not all calories are equal to the human body.
You eat a steak with lots of fat and protein your insulin doesn't get spiked and you are less likely to store excess nutrients as fat and are more likely to be consistently in ketosis and burn off fat stores. Drink a full sugar coke and eat a cookie your insulin spikes and you are more likely to store excess energy as fat and less likely to burn it off. Eat your food during a shorter time window and again your insulin is likely to be down regulated for longer and increase fat burn, which is why IF can help.
Homoeostasis of fat stores is far from that simple and there's lots in play, whilst our bodies don't understand calories I think it's likely that energy consumed but also the energy source (fat/carbs/protein) plays a role.
That being said my experience is mixed.
I gain weight most easily if I consume carb containing products like sausages or yogurt, even if I haven't increased my caloric intake. I have lost lots of weight without tracking calories and seemingly not eating in caloric deficit.
When I'm close to my ideal weight I've not lost weight whilst running 50 miles a week and eating strict carnivore but if I decrease my food intake and introduce IF I can still lose weight.
- Improved Insulin Sensitivity
Intermittent fasting can significantly improve insulin sensitivity, a key factor in preventing and managing type 2 diabetes. When you fast, your body becomes more efficient at using insulin to regulate blood sugar levels. This helps lower the risk of insulin resistance and associated health issues, including obesity and heart disease.
- Heart Health
Research suggests that intermittent fasting may have a positive impact on heart health. It can lead to reduced risk factors such as high blood pressure, elevated cholesterol levels, and inflammation. Lowering these risk factors can decrease the likelihood of cardiovascular diseases and improve overall heart function.
- Cellular Repair and Longevity
During fasting, your cells initiate a process called autophagy, which is essentially a cellular clean-up mode. This process involves the removal of damaged or dysfunctional components within your cells. By enhancing autophagy, intermittent fasting may contribute to cellular repair and longevity, potentially reducing the risk of age-related diseases.
- Cognitive Function and Brain Health
IF has been linked to improved brain health and cognitive function. Fasting triggers the production of brain-derived neurotrophic factor (BDNF), a protein that supports brain health by promoting the growth of new neurons and enhancing cognitive function. This may lead to improved memory, focus, and mental clarity.
- Reduced Inflammation
Chronic inflammation is a root cause of many health problems, including autoimmune diseases, cancer, and obesity. Intermittent fasting has been shown to reduce markers of inflammation in the body. By mitigating chronic inflammation, IF may contribute to a lower risk of developing inflammatory conditions.
- Enhanced Metabolism
Intermittent fasting can boost your metabolic rate by increasing the production of norepinephrine, a hormone that helps burn fat and calories. A faster metabolism can make it easier to manage your weight and maintain a healthy body composition.
- Simplicity and Flexibility
One of the most appealing aspects of intermittent fasting is its simplicity and flexibility. Unlike many other diets that require strict food restrictions, IF primarily focuses on when you eat. This makes it easier for many people to incorporate into their lifestyles, and it can be adapted to suit individual preferences and schedules.
Conclusion
Intermittent fasting is more than just a trendy diet; it's a holistic approach to health and wellness. Its numerous benefits extend beyond weight management to encompass improved insulin sensitivity, heart health, cellular repair, cognitive function, reduced inflammation, enhanced metabolism, and more. Before starting an intermittent fasting regimen, it's essential to consult with a healthcare professional, as individual needs and circumstances may vary. Nonetheless, for many, intermittent fasting offers a sustainable and effective path to a healthier, more vibrant life. IF can working best when used in conjunction with a low carb diet.
Here are some references on IF:
Weight Management:
- Reference: Varady, K. A., Bhutani, S., Klempel, M. C., Kroeger, C. M., & Trepanowski, J. F. (2013). Alternate day fasting for weight loss in normal weight and overweight subjects: a randomized controlled trial. Nutrition Journal, 12(1), 146.
Improved Insulin Sensitivity:
- Reference: Halberg, N., Henriksen, M., Söderhamn, N., Stallknecht, B., Ploug, T., Schjerling, P., ... & Madsbad, S. (2005). Effect of intermittent fasting and refeeding on insulin action in healthy men. Journal of Applied Physiology, 99(6), 2128-2136.
Heart Health:
- Reference: Tinsley, G. M., & La Bounty, P. M. (2015). Effects of intermittent fasting on body composition and clinical health markers in humans. Nutrition Reviews, 73(10), 661-674.
Cellular Repair and Longevity:
- Reference: Alirezaei, M., Kemball, C. C., Flynn, C. T., Wood, M. R., Whitton, J. L., & Kiosses, W. B. (2010). Short-term fasting induces profound neuronal autophagy. Autophagy, 6(6), 702-710.
Cognitive Function and Brain Health:
- Reference: Mattson, M. P., Moehl, K., Ghena, N., Schmaedick, M., & Cheng, A. (2018). Intermittent metabolic switching, neuroplasticity and brain health. Nature Reviews Neuroscience, 19(2), 63-80.
Reduced Inflammation:
- Reference: Faris, M. A. I., Kacimi, S., Al-Kurd, R. A., Fararjeh, M. A., Bustanji, Y. K., Mohammad, M. K., & Salem, M. L. (2012). Intermittent fasting during Ramadan attenuates proinflammatory cytokines and immune cells in healthy subjects. Nutrition Research, 32(12), 947-955.
Enhanced Metabolism:
- Reference: Zauner, C., Schneeweiss, B., Kranz, A., Madl, C., Ratheiser, K., Kramer, L., ... & Schneider, B. (2000). Resting energy expenditure in short-term starvation is increased as a result of an increase in serum norepinephrine. The American Journal of Clinical Nutrition, 71(6), 1511-1515.
