Enhancing Digestion to Promote Healthy Aging
You are not what you eat. You are what you digest. Digestive capacity decreases with age, which can include lower levels of stomach acid, digestive enzymes, intrinsic factor, and even impaired physical digestion properties like slower and weaker muscle contractions along the digestive tract.
We've all experienced digestive troubles from time to time, but decreased digestive power is a bigger issue that can damage your health without even realizing it. You may be eating the perfect diet and taking a stack of supplements that support your health and longevity, but if you aren't digesting and absorbing the nutrients from what you're taking in, you're not getting the benefits that you expect.
We're going to discuss the changes that happen in digestion as we age, as well as strategies to improve your digestion so you can enjoy even better health and vitality in your later years.
As we age, our bodies undergo a range of changes that can impact our digestive system's efficiency. These can include:
Reduced Stomach Acid Production: The stomach's production of hydrochloric acid tends to decrease with age. This acid is essential for breaking down food, particularly proteins, and for the absorption of certain nutrients like vitamin B12 and minerals. Lower acid levels can lead to incomplete digestion and decreased nutrient absorption.
Decreased Digestive Enzyme Production: The pancreas may produce fewer digestive enzymes as we get older. These enzymes are crucial for breaking down fats, proteins, and carbohydrates into smaller components that our bodies can absorb.
Changes in Gut Flora: The balance of bacteria in our gut, which plays a vital role in digestion and overall health, can shift with age. This alteration can affect everything from nutrient absorption to immune function.
Altered Physical Digestion: The muscles of the digestive tract can become less efficient, leading to slower transit times and potentially causing issues like constipation or incomplete digestion.
Reduced Intrinsic Factor: This stomach-produced compound is necessary for vitamin B12 absorption. A decline in intrinsic factor can lead to B12 deficiency, affecting energy levels and neurological health.
Let's get into the details.
The Relationship Between Age and Digestion
As we age, particularly starting in our 50s, our bodies produce fewer digestive enzymes and stomach acid. These fluids are essential in breaking down the food we eat into their molecular (and metabolically useful) components, and their decrease can make it harder for our bodies to properly use the nutrients therein.
This can further lead to an imbalance in our gut, manifesting as frequent constipation, diarrhea, or heartburn. In more extreme cases, poorly digested food particles can leak through the gut lining and enter the bloodstream, triggering inflammation. This condition is often referred to as 'leaky gut'.
Healthy gut bacteria are integral to avoiding leaky gut and supporting an aging digestive system, as they also break down food and keep the digestive system functioning properly. Therefore, maintaining a healthy gut microbiome by consuming a diet rich in prebiotics and probiotics and minimizing foods that harm good gut bacteria, such as sugar, is vital to maintaining optimal digestive health into our later years.
How Digestion Changes Impact Aging
The impact of these changes in gut chemistry and bacteria on aging isn't fully understood yet. Research in rats has shown that disruptions to gut bacteria can make it harder for intestinal stem cells to regenerate. This could affect metabolism and the overall health of the intestinal barrier, the disruption of which has been linked to aging and age-related conditions such as liver challenges, metabolic decline, inflammation in the intestines, and lung and brain problems. The microbial changes that occur later in life may also create a more inflammatory environment in the gut, potentially driving the aging process forward even faster.
Strategies to Improve Digestion as We Age
Recognizing the critical role digestion plays in our health and aging process, it's essential to identify strategies that can help improve digestion as we age.
Here are some effective tactics:
Adopt a Gut-Healthy Diet
A gut-healthy diet focuses on including foods that support and balance the gut flora, thereby enhancing overall digestive health.
Prebiotics: The Gut Bacteria's Fuel
Prebiotics are indigestible fibers that act as food for beneficial gut bacteria. They are found in various foods and play a crucial role in maintaining a healthy gut microbiome. Foods rich in prebiotics include:
Garlic and Onions: These contain fructooligosaccharides, which promote the growth of beneficial Bifidobacteria in the gut.
Asparagus and Leeks: High in inulin, a type of soluble fiber that supports the growth of friendly gut bacteria.
Bananas and Apples: These fruits are rich in pectin, a prebiotic fiber that enhances gut microbiota diversity and functionality.
Mushrooms and Algae: Mushrooms and certain types of algae are excellent ways to obtain dietary beta-glucans, and they're packed with other nutritional rarities as well. These natural sources are not only rich in this soluble fiber but also offer a range of other health benefits.
Regular consumption of these foods can lead to increased production of short- chain fatty acids (SCFAs) like butyrate, which are crucial for gut health and have anti-inflammatory effects.
Probiotics: Beneficial Live Bacteria
Probiotics are live microorganisms that, when consumed in adequate amounts, provide health benefits. They can be found in:
Yogurt and Kefir: These fermented dairy products contain live cultures of Lactobacillus and Bifidobacterium, which are beneficial for gut health.
Sauerkraut and Kimchi: Fermented vegetables that are rich in lactobacilli, helping to maintain a healthy balance of gut flora.
Kombucha and Fermented Soy Products: These provide a diverse range of probiotics, contributing to gut microbiome diversity.
Including probiotic-rich foods in your diet can help replenish and maintain the population of good bacteria in your gut, leading to improved digestion and absorption of nutrients.
Stimulate Digestive Enzymes
Enhancing the body's production of digestive enzymes is a key strategy for improving digestion. Digestive bitters and apple cider vinegar (ACV) are two natural agents that can stimulate enzyme activity effectively.
Digestive Bitters
Digestive bitters are herbal preparations made from bitter-tasting plants like dandelion, gentian, and artichoke. These bitters act as natural stimulants for the digestive system. Consuming them before meals can trigger a reflex stimulation of digestive juices, including hydrochloric acid (HCl) and digestive enzymes. This stimulation is due to the activation of taste receptors on the tongue, which in turn signals the digestive system to 'prepare' for food intake.
Apple Cider Vinegar
ACV, another potent stimulant for digestion, contains acetic acid, which can help with the breakdown of food. When diluted in water and consumed before meals, ACV can encourage the production of stomach acid, helping to decompose food more efficiently. This may be particularly beneficial for those experiencing age-related declines in stomach acid production.
Mechanism and Benefits
The mechanism behind these natural stimulants involves signaling the stomach to release gastric juices, preparing the digestive tract for the incoming food. This process aids in more efficient breakdown and absorption of nutrients.
Additionally, by increasing the acidity of the stomach, they can potentially help minimize issues like heartburn, which paradoxically can be a symptom of low stomach acid in some individuals.
Consider Supplements
In addition to natural strategies for enhancing digestion, certain supplements available can be helpful. Supplements like oregano oil, known for its antimicrobial properties, can be beneficial if there's an overgrowth of unfavorable bacteria or yeast in the small intestine. Similarly, olive leaf extract and berberine offer antimicrobial effects, aiding in balancing gut flora. Grapefruit seed extract is another supplement that can help maintain a healthy digestive environment.
Consider the following to support your gut healing journey:
Quercetin / Bromelain Complex: This supplement combines quercetin, a flavonoid known for its antioxidant properties, with bromelain, an enzyme derived from pineapples that aids in protein digestion. Together, they can support digestive health and mitigate inflammation.
Longevity Collagen: Hydrolyzed collagen peptides provide amino acids necessary for repairing and maintaining the gut lining, promoting overall digestive health.
Allow Your Digestive System to Rest
In addition to adding more gut-healthy foods, bitters, and supplements to your routine, it's also a smart idea to let your digestive system rest. Eating in a relaxed state, not on the run, can support optimal digestion. Moreover, giving your digestive system a break from breaking down food all the time can be beneficial. A rest period of at least 12 hours after dinner before eating again the next day is often recommended. Many people who choose intermittent fasting have found that the extended time without food improves their digestive health, since it gives those tissues a chance to regenerate. Consider an intermittent fasting time of 16-18 hours including the time you are sleeping, and compress your eating window to 6-8 hours in the day.
The Bottom Line
The connection between digestion and aging is a complex one, and more research is needed to fully understand the mechanisms at play. However, what's clear is that maintaining a healthy digestive system can potentially help you live a healthier, longer life. By adopting a gut-healthy diet, stimulating your body's digestive enzymes, considering supplements, and allowing your digestive system to rest, you can support your body's digestive function and promote overall well-being as you age.
Remember, everyone's body is different, and what works for one person may not work for another. Always consult with a healthcare provider before making significant changes to your diet or supplement routine. By doing so, you can ensure that you're taking the best steps towards a healthier and longer life.
Remember, aging is a natural part of life, and while we can't stop time, we can influence how our bodies age by taking care of our digestive health. Here's to the future, one bite at a time.
References:
- Laugier R, Bernard JP, Berthezene P, Dupuy P. Changes in pancreatic exocrine secretion with age: pancreatic exocrine secretion does decrease in the elderly. Digestion. 2009;50(3-4):202-211. doi:10.1159/000200762
- Döscherholmen A, Ripley D, Chang S, Silvis SE. Influence of age and stomach function on serum vitamin b 12 concentration. Scandinavian Journal of Gastroenterology. 1977;12(3):313-319. doi:10.3109/00365527709180933
- Sipponen P, Härkönen M. Hypochlorhydric stomach: a risk condition for calcium malabsorption? Scandinavian Journal of Gastroenterology. 2010;45(2):133-138. doi:10.3109/00365520903434117
- Leite G, Pimentel M, Barlow GM, et al. Age and the aging process significantly alter the small bowel microbiome. Cell Rep. 2021;36(13):109765. doi:10.1016/j.celrep.2021.109765
- Schluter J, Peled JU, Taylor BP, et al. The gut microbiota is associated with immune cell dynamics in humans. Nature. 2020;588(7837):303-307. doi:10.1038/s41586-020-2971-8
- Thevaranjan N, Puchta A, Schulz C, et al. Age-associated microbial dysbiosis promotes intestinal permeability, systemic inflammation, and macrophage dysfunction. Cell Host Microbe. 2017;21(4):455-466.e4. doi:10.1016/j.chom.2017.03.002
- Slavin J. Fiber and prebiotics: mechanisms and health benefits. Nutrients. 2013;5(4):1417-1435. doi:10.3390/nu5041417
- Hill D, Sugrue I, Arendt E, Hill C, Stanton C, Ross RP. Recent advances in microbial fermentation for dairy and health. F1000Res. 2017;6:751. doi:10.12688/f1000research.10896.1
- Valussi M. Functional foods with digestion-enhancing properties. International Journal of Food Sciences and Nutrition. 2012;63(sup1):82-89. doi:10.3109/09637486.2011.627841
- Santos HO, de Moraes WMAM, da Silva GAR, Prestes J, Schoenfeld BJ. Vinegar (Acetic acid) intake on glucose metabolism: A narrative review. Clinical Nutrition ESPEN. 2019;32:1-7. doi:10.1016/j.clnesp.2019.05.008
- Wilhelmi De Toledo F, Grundler F, Sirtori CR, Ruscica M. Unravelling the health effects of fasting: a long road from [obese] treatment to healthy life span increase and improved cognition. Annals of Medicine. 2020;52(5):147-161. doi:10.1080/07853890.2020.1770849