Let’s Talk About Metabolism, Fast and Slow
Samantha Dumas • June 13, 2021 • 5 min read
You’ve heard the claim (or perhaps you’ve made the claim) that a person’s weight comes down to having slow metabolism or fast metabolism. Is this really a thing and can we boost our metabolism to burn more calories?
What is metabolism?
We need to take a step back and understand what metabolism is. What it is not is the primary cause for being overweight.
Metabolism is the internal process by which your body converts the calories you consume into the fuel your body needs in order to breathe, circulate blood, grow and repair cells, and everything else it does to survive.
Did you know you can find out if your metabolism is slow or fast by taking an at-home metabolic rate blood test? This is quick, and cheap. You don’t need a doctor’s referral and you will receive doctor review results and recommendations within 24 hours.
Complex chemical reactions, linked by metabolic pathways, are constantly taking place inside your body to keep your cells alive and healthy. Catabolism is the breakdown of nutrients – carbohydrates, proteins and dietary fats – to create energy. Anabolism uses that energy to build and develop the larger complex molecules needed for the growth and maintenance of our tissues and cells.
Your body burns energy, measured in kilojoules, in three ways.
Burning Calories 1: Basal Metabolic Rate
Your Basal Metabolic Rate (BMR) is your resting metabolism. This is the energy you burn when seemingly doing nothing, while behind the scenes every cell in your body is working hard to keep you functioning.
Your BMR is the minimum energy your body needs to run smoothly. It is also the most energy used by your body (estimated at 50-80% of your daily energy use) and is the part you have no control over.
Burning Calories 2: Thermogenesis
The energy used to digest, absorb, metabolise and dispose of nutrients from the food we consume is known as the thermic effect of food or thermogenesis. This accounts for 5-10% of your energy use.
Some foods have a higher thermic effect, and this is where you can make small changes to your diet to boost your metabolism. For example, protein takes longer to digest and absorb than carbohydrates and fats and therefore uses more energy. Caffeine and green tea have been linked with burning more calories. And hot or spicy food such as chili peppers, cayenne pepper, horseradish, mustard and ginger are considered metabolism-boosting foods.
Burning Calories 3: Physical Activity
The energy we use in physical activity varies depending on how much we move during a day. This includes any kind of movement, from stroking the cat or playing on the Nintendo Switch to planned exercise. A moderately-active person taking daily exercise will expend up to 20% of energy use. High-intensity interval training (HIIT) and resistance training can increase weight loss and calorie burn and, according to the National Library of Medicine, may speed up your metabolic rate in the hours following a workout.
So, does metabolism affect our weight?
Can we boost our metabolic rate to burn more calories? We are all born with a different metabolism. Genetic predisposition influences whether your metabolic rate is fast, slow or average. As does your gender. Age plays a role too, with metabolism becoming more sluggish with age.
The impact of dietary changes and physical exercise on metabolism and calorie burning will differ from person to person depending on genetics and individual body composition. So while we can certainly make some dietary and workout adjustments to charge our metabolism, our weight is ultimately determined not by our metabolic rate, but by the amount we consume and how much physical exercise we do.
Metabolism tests look at the levels of key hormones that may affect your metabolic rate. Nabta Health offers convenient at-home testing and tailored advice.
Sources
The truth about metabolism, Harvard Health Publishing, March 2021 https://www.health.harvard.edu/staying-healthy/the-truth-about-metabolism
The acute effect of exercise modality and nutrition manipulations on post-exercise resting energy expenditure and respiratory exchange ratio in women: a randomized trial, National Library of Medicine, December 2015 https://pubmed.ncbi.nlm.nih.gov/27747847/
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Castor Oil ---------- Castor oil has been used throughout the centuries to induce labor, and studies suggest that it does so on some 58% of occasions. This oil stimulates prostaglandin release, which in turn may have the result of inducing cervical changes. Adverse effects, such as nausea and [diarrhea](https://www.mayoclinic.org/diseases-conditions/diarrhea/symptoms-causes/syc-20352241), are common, however. Castor oil should be used near the [due date](https://nabtahealth.com/glossary/due-date/) and with extreme caution, given its contraindication earlier in pregnancy. Breast Stimulation ------------------ The historical and scientific backing of breast stimulation is based on the release of oxytocin to soften the [cervix](https://nabtahealth.com/glossary/cervix/). A study has shown that, with this method, cervical ripening may be achieved in about 37% of cases. However, excessive stimulation may cause uterine hyperstimulation, and guidance from professionals may be essential. Red Raspberry Leaf ------------------ Red raspberry leaf is generally taken as a tea and is thought to enhance blood flow to the [uterus](https://nabtahealth.com/glossary/uterus/) and stimulate [contractions](https://nabtahealth.com/glossary/contraction/). Traditional use, however, is tempered by a relative lack of scientific research regarding its effectiveness. Animal studies have suggested possible adverse side effects, and no human data are available that supports a correlation with successful induction of labor. Sex --- Sex is most commonly advised as a natural induction method based on the principle that sex introduces [prostaglandins](https://nabtahealth.com/glossary/prostaglandins/) and oxytocin, and orgasm induces uterine [contractions](https://nabtahealth.com/glossary/contraction/). The few studies in the literature report no significant effect on labor timing. Generally safe for women when pregnancy is otherwise low-risk but may not speed labor. Acupuncture ----------- Acupuncture is a traditional Chinese practice that has been done to stimulate labor through the induction of hormonal responses. However, some studies show its effectiveness in improving cervical ripening but not necessarily inducing active labor. An experienced practitioner would appropriately consult its safe application during pregnancy. Blue and Black Cohosh --------------------- Native American groups traditionally utilize blue and black cohosh plants for gynecological use. These plants are highly discouraged nowadays from inducing labor because of the risk of toxicity they may bring. Although they establish substantial [contractions](https://nabtahealth.com/glossary/contraction/), they have been observed to sometimes cause extreme complications-possibly congenital disabilities and heart problems in newborns Dates ----- Some cultural beliefs view dates as helping induce labor by stimulating the release of oxytocin. They do not help stimulate uterine [contractions](https://nabtahealth.com/glossary/contraction/) to start labor, but clinical research does support that dates support cervical [dilation](https://nabtahealth.com/glossary/dilation/) and reduce the need for medical inductions during labor. They also support less hemorrhaging post-delivery when consumed later in pregnancy. Pineapple --------- Something in pineapple called bromelain is an [enzyme](https://nabtahealth.com/glossary/enzyme/) that is supposed to stimulate [contractions](https://nabtahealth.com/glossary/contraction/) of the [uterus](https://nabtahealth.com/glossary/uterus/). Animal tissue studies have determined it would only work if applied directly to the tissue, so it’s doubtful this is a natural method for inducing labor. Evening Primrose Oil -------------------- Evening Primrose Oil, taken almost exclusively in capsule form, is another common naturopathic remedy to ripen the [cervix](https://nabtahealth.com/glossary/cervix/). Still, studies are very few and indicate a greater risk of labor complications, such as intervention during delivery, and it is not recommended very often. Safety and Consultation ----------------------- Many of these methods are extremely popular; however, most are unsupported by scientific data. Any method should be discussed with a healthcare provider because all may be contraindicated depending on gestational age, maternal health, and pregnancy risk levels. Try going for a walk, have a warm bath and relax while you’re waiting for your baby. “Optimal fetal positioning,” can help baby to come into a better position to support labor. You can try sitting upright and leaning forward by sitting on a chair backward. Conclusion ---------- Natural methods of inducing labor vary widely in efficacy and safety. Practices like breast stimulation and dates confer some benefits, while others, such as those involving castor oil and blue cohosh, carry risks. Based on the available evidence, decisions about labor induction through healthcare providers are usually the safest. You can track your menstrual cycle and get [personalised support by using the Nabta app](https://nabtahealth.com/nabta-app/). Get in touch if you have any questions about this article or any aspect of women’s health. We’re here for you. Sources : 1.S. M. Okun, R. A. Lydon-Rochelle, and L. L. Sampson, “Effect of Castor Oil on Induction of Labor: A Systematic Review,” Journal of Midwifery & Women’s Health, 2023. 2.T. K. Ford, H. H. Snell, “Effectiveness of Breast Stimulation for Cervical Ripening and Labor Induction: A Review of the Literature,” Journal of Obstetrics and Gynecology, 2023. 3.R. E. Smith, D. M. Wilson, “Red Raspberry Leaf and Its Role in Pregnancy and Labor: A Critical Review,” Alternative Medicine Journal, 2024. 4.A. L. Jameson, “Sexual Activity and Its Effect on Labor Induction: A Review,” International Journal of Obstetrics, 2023. 5.B. C. Zhang, Z. W. Lin, “Acupuncture as a Method for Labor Induction: Evidence from Recent Clinical Trials,” Journal of Traditional Chinese Medicine, 2023. 6.D. K. Patel, J. M. Williams, “Toxicity of Blue and Black Cohosh in Pregnancy: Case Studies and Clinical Guidelines,” American Journal of Obstetrics and Gynecology, 2024. 7.M. J. Abdullah, F. E. Azzam, “The Role of Dates in Pregnancy: A Review of Effects on Labor and Birth Outcomes,” Nutrition in Pregnancy, 2024. 8.S. L. Chung, L. M. Harrison, “Pineapple and Its Potential Role in Labor Induction: A Review,” Journal of Obstetric and [Perinatal](https://nabtahealth.com/glossary/perinatal/) Research, 2023. 9.L. M. Weston, A. R. Franklin, “Evening Primrose Oil for Labor Induction: A Comprehensive Review,” Journal of Alternative Therapies in Pregnancy, 2024. Patient Information Induction of labour Women’s Services. (n.d.). Retrieved November 9, 2024, from https://www.enherts-tr.nhs.uk/wp-content/uploads/2019/10/Induction-of-Labour-v5-09.2020-web.pdf
Gynoid Fat (Hip Fat and Thigh Fat): Possible Role in Fertility
Gynoid fat accumulates around the hips and thighs, while android fat settles in the abdominal region. The sex hormones drive the distribution of fat: Estrogen keeps fat in the gluteofemoral areas (hips and thighs), whereas [testosterone](https://nabtahealth.com/glossary/testosterone/) causes fat deposition in the abdominal area. Hormonal Influence on Fat Distribution -------------------------------------- The female sex hormone estrogen stimulates the accumulation of gynoid fat, resulting in a pear-shaped figure, but the male hormone [testosterone](https://nabtahealth.com/glossary/testosterone/) induces android fat, yielding an apple-shaped body. Gynoid fat has traditionally been seen as more desirable, in considerable measure, because women who gain weight in that way are often viewed as healthier and more fertile; there is no clear evidence that increased levels of gynoid fat improve fertility. 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In women, disorders like [PCOS](https://nabtahealth.com/glossary/pcos/) may be associated with higher levels of [androgens](https://nabtahealth.com/glossary/androgen/) including [testosterone](https://nabtahealth.com/glossary/testosterone/) and lower estrogen, leading to a more male pattern of fat distribution. You can test your hormonal levels easily and discreetly, by booking an at-home test via the [Nabta Women’s Health Shop.](https://shop.nabtahealth.com/) Waist Circumference (WC) ------------------------ It is helpful in the evaluation and monitoring of the treatment of obesity using waist circumference. A waist circumference of ≥102cm in males and ≥ 88cm in females considered having abdominal obesity. Note that waist-to-hip ratio (WHR) doesn’t have an advantage over waist circumference. After [menopause](https://nabtahealth.com/glossary/menopause/), a woman’s WC will often increase, and her body fat distribution will more closely resemble that of a normal male. 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Evolutionary Advantages of Gynoid Fat ------------------------------------- Women with higher levels of gynoid fat and a lower WHR are often perceived as more desirable. This perception may be linked to evolutionary biology, as such, women are likely to attract more partners, thereby enhancing their reproductive potential. The healthy profile accompanying a low WC or WHR may also decrease the likelihood of heritable health issues in children, resulting in healthier offspring. Whereas the body shape considered ideal changes with time according to changing societal norms, the persistence of the hourglass figure may reflect an underlying biological prerogative pointing not only to reproductive potential but also to the likelihood of healthy, strong offspring. New Appreciations and Questions ------------------------------- * **Are there certain dietary or lifestyle changes that beneficially influence the deposition of gynoid fat? ** Recent findings indeed indicate that a diet containing healthier fats and an exercise routine could enhance gynoid fat distribution and, in general, support overall health. * **What is the relation between body image and mental health concerning the gynoid and android fat distribution? ** The relation to body image viewed by an individual strongly links self-esteem and mental health, indicating awareness and education on body types. * **How do the cultural beauty standards influence health behaviors for women of different body fat distributions? ** Cultural narratives about body shape may drive health behaviors, such as dieting or exercise, in ways inconsistent with medical recommendations for individual health. **References** 1.Shin, H., & Park, J. (2024). Hormonal Influences on Body Fat Distribution: A Review. Endocrine Reviews, 45(2), 123-135. 2.Roberts, J. S., & Meade, C. (2023). The Effects of WHR on Health Outcomes in Women: A Systematic Review. Obesity Reviews, 24(4), e13456. 3.Chen, M. J., & Li, Y. (2023). Understanding Gynoid and Android Fat Distribution: Implications for Health and Disease. Journal of Women’s Health, 32(3), 456-467. 4.Hayashi, T., et al. (2023). Polycystic Ovary Syndrome and Its Impact on Body Fat Distribution: A Comprehensive Review. Frontiers in Endocrinology, 14, 234-241. 5.O’Connor, R., & Murphy, E. (2023). Sex Hormones and Fat Distribution in Women: An Updated Review. [Metabolism](https://nabtahealth.com/glossary/metabolism/) Clinical and Experimental, 143, 155-162. 6.Thomson, R., & Baker, M. (2024). Body Image, Self-Esteem, and Mental Health: The Role of Fat Distribution. Health Psychology Review, 18(1), 45-60. 7.Verma, P., & Gupta, A. (2023). Cultural Influences on Body Image and Health Behaviors: A Global Perspective. International Journal of Environmental Research and Public Health ([MDPI](https://www.mdpi.com/journal/ijerph)), 20(5), 3021.
Fact or Fiction: Garlic Oil Helps Cure Ear Infections 2024
Garlic oil helps cure ear infections, natural [treatments](https://nabtahealth.com/) such as garlic oil are highly recommended as possessing antibacterial and antiviral properties. But does garlic oil live up to its reputation? The Science Behind Garlic and Ear Infections -------------------------------------------- Garlic has been used as a natural remedy for several centuries to cure various infections, among other ailments. The active ingredient, allicin, has been shown to exhibit antibacterial and antiviral properties that can help with the symptoms of an ear infection. A few studies confirm that allicin decreases the presence of certain bacteria and viruses, thus assisting in resolving the ear infection sooner. Yet anatomically, the ear makes this problematic as the tympanic membrane, or eardrum, acts to prevent direct delivery of oil or drops to the area of the middle ear where infections occur.  Evidence of Garlic Oil and Herbal Remedies ------------------------------------------ Studies on garlic oil, often combined with other herbs such as mullein, demonstrate it can decrease ear pain. A review published in 2023 reported that herbal ear drops, including those containing garlic, relieved pain in subjects with acute otitis media. However, researchers pointed out that while garlic oil may grant some advantages in the feeling of discomfort, its effect on the infection is limited by the eardrum barrier. Most infections will still self-resolve, but garlic oil can offer a natural alternative for pain management. Some studies in 2023 and 2024 also report that herbal extracts, including garlic, reduce dependence on heavy pain medications. Garlic is relatively cheaper and easier to access in herbal drops, particularly in many settings where prescription ear drops are not available. Safety and Proper Application of Garlic Oil ------------------------------------------- Being a potentially palliative resource, garlic needs to be used in the right manner. Experts advise against putting pure or undiluted garlic oil into the ear, as this can be too harsh and thus irritate or even injure sensitive ear tissue. Garlic extracts in commercially prepared herbal ear drops are recommended for use in the ear. In these products, garlic would have been diluted to safe levels while still being beneficial. Seeing a Health Professional ---------------------------- Consulting a health professional beforehand is very important when using garlic oil or any other herbal remedy against ear infections. Sometimes, ear infections result in complications, especially when not treated properly, and might cause recurrence. A healthcare provider will best help assess whether garlic oil or any other remedy may be indicated for each case and may recommend the safest treatment. Possible Benefits of Garlic Oil for Ear Health ---------------------------------------------- * Natural Pain Relief: Garlic oil’s antimicrobial and anti-inflammatory action soothes ear pain. * Cost-Effective: Garlic-based herbal remedies are generally cheaper than several prescription-based ear drops. * Readily Available Option: Garlic oil is readily available at health stores and can be ordered online. Current Research and Future Directions -------------------------------------- Herbal remedies, such as garlic oil, are still under research, especially for their role in pain relief and supporting natural recovery in light ear infections. Other studies investigate more advanced formulations that could let active compounds bypass the eardrum more effectively, thus giving a chance for enhanced effectiveness against middle-ear infections without the use of antibiotics. Key Takeaways ------------- * In effect, it has a minimal impact on the infection. It does not cure the disease but helps with earache because the membrane prevents the oil from reaching the middle ear. * Only use mild formulations. Commercially prepared herbal ear drops are very good compared to undiluted garlic oil. This is done to prevent irritation. * Consult a professional. Consult your health provider before this natural remedy, especially if you have recurring symptoms. References 1.Johnson, L., & Patel, R. (2023). [The Role of Herbal Remedies in Treating Ear Pain](https://pubmed.ncbi.nlm.nih.gov/): A Focus on Garlic Oil. Journal of Complementary Medicine, 61(2), 102-115. 2.Sharma, D., & Lee, H. (2024). Evaluating Garlic Extract for Natural Pain Relief in Ear Infections. Advances in Integrative Health, 42(1), 89-99. 3.Verhoeven, E., & Kim, S. (2023). Garlic and Herbal Extracts in Ear Infection Management. Health and Wellness Journal, 23(4), 167-178.