JERUSALEM ARTICHOKES freshly, 'mined' (harvested) from our garden

Resistant Starch
by Mary Louise;Town Jaqua, Health Minister 12/8/2025

 

What do potatoes, breakfast cereals, pretzels, rice, corn, bread, bread products, and more have in common? They are all popular dietary picks that contain starch. While starch is important for the diet, not all starches are the same. Starch is part of the carbohydrate family (sugar, fiber, starch) that is best known for maintaining the body’s proper energy level. However, commonly-consumed starches have a down-side, for once in the body, they convert to sugar and raise blood sugar levels. Too much sugar overloads the pancreas so that it cannot produce enough insulin to offset the sugar imbalance. This impasse puts the body at risk for numerous health problems, particularly diabetes, heart disease, cancer, and weight gain. It is thus important to learn the role of starches in the diet and understand that not all starches are healthy.

STARCH: the Standard American Diet way
The Standard American Diet of cooked, processed, animal-based foods offers products that have been 'refined' through various methods. These processes alter the natural integrity of food which compromises and ultimately destroys its nutritional value. Stripping or altering food of its natural value turns otherwise healthy food into unhealthy commodities. Most popular and therefore commonly-consumed starch-rich foods include

  1. potatoes
  2. breakfast cereals
  3. pretzels
  4. flours- white flour, millet, sorghum, whole wheat flour
  5. oats
  6. Instant noodles
  7. breads, bread products- bagels, english muffins, white bread, tortillas, etc.
  8. cookies
  9. rice
  10. pasta
  11. corn, cornmeal

Most effected by refining processes are whole grains such as white flour and white flour products which turn into 'bad starches' known as 'bad carbohydrates.' So it is that the average American unwittingly becomes a carboholic, being hooked on eating undigestible, unassimilable and therefore toxic starches.

ENTER: Resistant Starch
By definition resistant starch is also part of the carbohydrate family but differs in that it resists digestion in the small intestine and ferments in the large intestine. This action is an important feature for as the fibers in the food ferment they act as a prebiotic and feed the good bacteria in the gut. Thus, the digestive process is properly supported because the body’s ability to digest and assimilate food is dependent upon a proper balance of good and bad bacteria in the gut.

RESISTANT STARCH: Benefits
As starches are digested they break down into sugar (glucose), high levels of which pose potential health risks in the body. However, because resistant startch is not digested in the small intestine, it does not raise the body's glucose level. Instead, gut health is improved as fermentation in the large intestine makes more good bacteria and less bad bacteria in the gut. Healthy gut bacteria can significantly improve control of the body's glucose level. Additionally resistant starchincreases the feeling of fullness, aids in the treatment and prevention of constipation, decreases bad cholesterol, and lowers the risk of colon cancer. Furthermore, since resistant starch is fermented slowly, it has the ability to cause less gas.

RESISTANT STARCH: Food Sources
Some foods that contain resistant starch include:

  • Plantains and green bananas (as a banana ripens the starch changes to a regular starch
  • Beans, peas, chickpeas, lentils (white beans and lentils are the highest in resistant starch
  • Jerusalem Artichokes (photo shown above)
  • Whole grains including oats and barley
  • Cooked and cooled rice, potatoes

The amount of resistant starch changes with heat. Oats, green bananas, and plantains lose some of their resistant starch when cooked. Another type of resistant starch is made in the cooking and cooling process. Cooked rice that has been cooled is higher in resistant starch than rice that was cooked and not cooled.

RESISTANT STARCH: Adding to Your Diet
Since the full benefit of resistant starch found in certain foods is lost when heated, consider the following strategies.

  • Cook rice, potatoes, beans, and pasta a day in advance and cool in the refrigerator overnight. If desired. before eating as it does not decrease the amount of resistant starch
  • In place of cooked oatmeal, eat uncooked oats soaked in filtered water or a non-dairy milk and refrigerate overnight (often called overnight oats).
  • Add lentils to a salad or soup.
  • Replace white flour by using flours made from resistant starch such as green banana, plantain, cassava, Jerusalem Artichoke, potato starch

Some resistant starch-filled foods can be powdered and sprinkled on salads or used raw as conventional flour substitutes. Furthermore, for the sake of better gut health, choose to eat low-starch vegetables such as

  • Bell peppers
  • Cauliflower, kale, broccoli, kohlrabi
  • Cucumbers
  • Leafy greens, spinach, Swiss chard

CONCLUSION
Digestion is the most important system of the body for it is its food processing center and as such it is responsible for feeding the body’s 100+trillion cells. If any part of this system fails, the body risks potential harm. Therefore, care and management of this system should elicit personal commitment and priority.

Thankfully there is a growing awareness of the body’s inner eco system, albeit its ‘microbiome.’ While it is not necessary to become a scientist in order to be healthy, learning what constitutes good gut health and applying those principles does bring lasting benefits.

 

Recommended resources:

John Kohler from okraw.com on resistant starch
https://www.youtube.com/watch?v=AbyAdedx2Iw

Dr. Berg: #1 Most Dangerous Carbohydrate in the World
https://www.youtube.com/shorts/VQyj-aFpk3o

Jerusalem Artichokes: Plant once, harvest forever
https://www.youtube.com/watch?v=YROVfKt4xb4

Sunchokes – from garden to gut
https://www.youtube.com/watch?v=l7xHhRIwISQ

How to Store Sunchokes AKA Jerusalem Artichokes for the Winter
https://www.youtube.com/watch?v=zeiaHSg3f2o

Back to Living Letter #157 / index