Cross-posted at www.logmyloss.com.
As readers of my blog, logmyloss, have noticed lately, I have begun implementing intermittent fasting into my dietary lifestyle. I knew when I first posted this that it would be met with resistance; however, it is something I have put a great deal of research into, and I feel it is a healthy addition to my plan. Let me explain.
I have been curious about how the amounts we eat affect our lifespan for some time. This began when my son first took on a snake as a pet. First, let me say that I realize humans and snakes are as opposite as it comes, but hear me out. Snakes’ lifespans are directly affected by the frequency in which they eat (i.e., a snake that is fed less often will live significantly longer). While I have thought about this often, it has been in the back of my mind; nevertheless, I have always wondered if the same holds true for other animals. Well, it appears that it may. An entry on Wikipedia about Calorie Restriction references a study titled Energy Intake, Meal Frequency, and Health performed by the Laboratory of Neurosciences, National Institute on Aging Intramural Research Program found that, “The size and frequency of meals are fundamental aspects of nutrition that can have profound effects on the health and longevity of laboratory animals.” Both the Wikipedia Entry and the article indicate that intermittent fasting appears to have the same positive affects.
So, what is intermittent fasting? That is a good question; one I had to ask as well. Intermittent fasting is choosing to fast periodically, such as every other day, also called Alternate Day Fasting. There is no hard, fast rule though. Some people choose to fast once a week, others a couple of times a week. Some even choose to fast multiple days at a time. In fact, there are some who choose to do a 20/4 fast, which is fasting 20 hours and eating freely for 4 hours.
Of course, as I am sure you guessed, this is not the only benefit I found. It appears that intermittent fasting may reduce the risk of Alzheimer’s Disease (another similar study can be read here). As my long-term readers have no doubt noticed, this is a disease that really scares me.
Another substantial benefit is that intermittent fasting reduces cell division linked to cancer. According to the same article, mice who fasted every other day also had reduced levels of IGF-1, a protein that induces cell growth and has been linked to cancer.
Of course, I would be remiss if I did not mention some of the arguments against fasting. The number one argument is that it is useless when used as a weight loss mechanism. I have often made a similar statement. However, my research has indicated just the opposite is true. While starvation tends to cause the body to go into preservation mode, planned intermittent fasting does not seem to have the same effect (see this medical study). I have also heard that it will have a negative affect on energy levels. I have not experienced this yet, but I am paying close attention to it. These are not the only arguments, but they are the only ones that resonated with me.
There are numerous other claims of the benefits of fasting, including weight loss, immunity boost, improved cardiovascular and brain functions, reduce blood sugar and improve insulin sensitivity, reverse diabetes, improve cholesterol levels, and an overall feeling of wellness or alertness. For the sake of brievity, I will not go into my findings on these areas. However, the information is there, just head on over to your favorite search engine and see what you find.
Several other websites that have some good information (although not all is supported medically) are as follows: Benefits of Fasting, Fasting and Its Many Benefits, The Benefits of Fasting: More Energy and a Longer Life, Fast Way to Better Health, Is Intermittent Fasting Healthy, and Should You Fast?. This is not it either. There is a plethora of good information out there. I encourage you to check it out.
I, for one, intend on continuing to include intermittent fasting in my dietary regiment. In fact, I hope to progress toward Alternate Day Fasting, but I am not there yet. At this point, I do feel good during and at the end of my fast, which says something for it.