The Argument for Intermittent Fasting for Women
Stephanie Szylar
October 2024
Health is an important topic on many women’s minds. One aspect of health is weight management. Obesity, according to the CDC in 2023, shows that a little over a third of adults in 23 states are considered obese, and obesity is now considered an epidemic. [1] One of the problems with obesity and increased fatty tissue is that it keeps the body in a state of chronic inflammation. This can lead to heart disease and cancer, which are the leading causes of death for women with diabetes. [5]There are many diets and food habits out there, with one example being intermittent fasting or IF. Is intermittent fasting a simple and effective way to stay healthy?
A quick science lesson
During digestion, the food we eat is broken down into simple molecules. Glucose is one of the molecules and is used for energy.[5] When glucose levels are high, the body secretes insulin to help get the glucose into the cell so it can be used right away.[5] Unused glucose is stored in several places in the body: including in the liver and muscles.[5] Several hormones are also secreted during digestion which help regulate when we are full and when we are still hungry (leptin decreases appetite, and ghrelin increases appetite)[5]. Carbohydrates and proteins turn into fat cells for storage.[5]It takes about 6-8 hours to fully digest a meal and about 2-3 hours for a healthy body to direct where to use or store glucose. [5]
What is intermittent fasting?
In a nutshell, intermittent fasting can be described as scheduled periods of fasting mixed with periods of regular eating. A simple example is the hours in which we sleep. This is a fasting period. Other methods include 16/8 method (fasting 16 hours and eating healthy nutrition dense foods within an 8-hour period, or window) 12/12 method (eating healthy nutrition dense foods in a 12-hour period or window and fasting the other 12 hours), and 5:2 diet (regular eating of healthy nutrition dense foods 5 days a week and restricting calories for 2 days a week). [5]
Benefit of Intermittent Fasting?
Intermittent fasting can improve insulin sensitivity especially in those with diabetes. This can improve HbA1c, which is average glucose readings over the previous 3-month period. Weight loss due to the decreased caloric intake and reduced inflammation which can regulate blood sugar and decrease oxidative stress which is harmful to cells leading to cancer [5] One study suggests IF effects reproductive hormones like androgen markers (testosterone and the free androgen index) which can be used to treat hyperandrogenism in females with polycystic ovarian syndrome (PCOS) by improving menstruation and fertility [2]
What are the downsides and who shouldn’t practice intermittent fasting?
When long fasting begins there can be side effects such as headaches, tiredness, constipation, irritability. Also, if intermittent fasting is practiced incorrectly, dehydration and malnutrition can happen.[3] There are also groups of people who should avoid intermittent fasting. These include those who have diabetes type 1, pregnant/breastfeeding, low bone density, eating disorders, weakened immune systems (HIV/AIDS, undergoing chemotherapy). [5] So it is important to work with a licensed healthcare provider and/or nutritionist to find out if fasting is a good option.
Is your interest peaked? Last thoughts
Intermittent fasting along with regular physical activity can optimize health and overall well-being now and for the future for certain groups of people. Always be sure to check with your doctor about specific health histories and any monitoring that has to be done before starting an intermittent fasting program and during the process to monitor the outcomes.
References
[1] CDC (2024). New CDC data show adult obesity prevalence remains high. Retrieved from https://www.cdc.gov/media/releases/2024/p0912-adult-obesity.html#:~:text=New%20CDC%20p opulation%20data%20from%202023%20show%20that,in%20each%20U.S.%20state%20is%20l iving%20with%20obesity.
[2] Cienfuegos, S., Corapi, S. Gabel, K., Ezpelta, M., Kalam, F., Lin, S., Pavlou, V., Varady, K. (2022) Effect of intermittent fasting on reproductive hormone levels in females and males: A review of human trials. Nutrients, 14(11). https://doi.org/10.3390/nu14112343
[3] Kubala, J. (2024). 9 Potential intermittent fasting side effects. Healthline. Retrieved from https://www.healthline.com/nutrition/intermittent-fasting-side-effects#hunger
[4] Mayo Clinic (2024) Chronic inflammation: What it is, why it’s bad, and how you can reduce it. Retrieved from
https://mcpress.mayoclinic.org/dairy-health/chronic-inflammation-what-it-is-why-its-bad-and-ho w-you-can-reduce-it/#:~:text=Chronic%20inflammation%20contributes%20to%20diseases%20t hat%20together%20represent,that%20help%20maintain%20good%20digestive%20and%20over all%20health.
[5] Nye, K. Cherrin, C. & Meires, J. (2024). Intermittent Fasting: Exploring approaches, benefits, and implications for health and weight management. Journal for Nurse Practitioners (20)3. https://www.npjournal.org/article/S1555-4155(23)00395-1/fulltext