3 Gut Health Tips for Weight Loss (that most people miss!)
- 1 day ago
- 6 min read
Author's Bio: Ashley Oswald, RDN, IFNCP, CLT, LD
Gut health and weight loss. Are you surprised to hear that these two things are connected?
Well, I'm not. Even though we're a gut health clinic, we do get a decent amount of clients who come in looking to lose weight. Many of them are unaware that there can be a connection between the gut and stubborn weight loss.
The body is not a toaster oven. Everything is more connected than simply calories in and calories out.
If you're having trouble losing weight while following this basic reasoning, you may need to look at other factors that could be making it difficult for you to lose weight.
I'm Ashley Oswald. I'm a Harvard teaching hospital trained dietitian and I've been working in the world of gut health since 2012. I'm also on teaching faculty at a functional medicine credentialing program as a gut health expert.
So let's dive in.
[Video Transcript Below Video - it is the same information]
Macronutrients vs Micronutrients
We talk a lot about macronutrients, which are proteins, fats, and carbohydrates. But we don't talk as much about micronutrients.
The small intestine is the part of the gut where most nutrient absorption happens. This is important because there is a connection between micronutrients, which include vitamins and minerals, and stubborn weight loss.
How Digestion Actually Works
Digestion really begins when we look at food.
When we see food, saliva begins to be produced in the mouth. This starts the breakdown of carbohydrates because an enzyme called amylase is secreted. As you chew food, carbohydrates begin breaking down.
Food then travels down the esophagus, which works like a food chute. There is a movement called peristalsis that pushes food downward.
Eventually the food reaches the stomach, which acts like a holding reservoir. The stomach is very acidic, and it is supposed to be acidic. That acidity helps break down proteins, fats, and carbohydrates further.
Many people think acid reflux happens because there is too much stomach acid. In reality, it can be related to the sphincter between the esophagus and the stomach. That is a topic for another day.
What matters here is that the stomach must be acidic for proper digestion.
Food then slowly moves through the pyloric sphincter into the small intestine. This is where most nutrient absorption occurs.
If you experience gas, bloating, or digestive discomfort after eating, especially by the end of the day, it may be a sign that your body is not absorbing nutrients properly.
Why Micronutrients Matter for Weight Loss
Micronutrient deficiencies can make it harder to lose weight.
Vitamins and minerals are essential for metabolism, hormone balance, and energy production. If the body lacks these nutrients, weight loss may become more difficult.
One important example is magnesium.
Research suggests that around 70 to 75 percent of individuals have low or deficient magnesium levels.
Magnesium is important because it helps the body metabolize carbohydrates properly. If magnesium levels are low, it may be harder to lose weight and easier to gain weight.
Magnesium also plays a role in stress and sleep regulation. When stress is lower and sleep improves, hormones like ghrelin and leptin stay in better balance. These hormones regulate hunger and appetite.
When they function properly, you are less likely to feel hungry all the time.
Tips for Weight Loss: The Gut, Nutrients, and Thyroid Health
Another example involves B vitamins and thyroid health.
If your body is not absorbing B vitamins properly, thyroid function can be affected. A slow thyroid can make weight loss much more difficult.
Several nutrients help support thyroid function, including selenium, zinc, and B vitamins. These nutrients are needed for proper thyroid hormone conversion.
And again, it all begins in the gut with proper nutrient absorption. Supporting gut health with proper nutrition is one of the most overlooked tips for weight loss that many people miss.
Why Micronutrient Deficiencies Happen
Micronutrient deficiencies do not always happen overnight.
Sometimes they begin decades earlier.
Maybe as a child you did not eat the most nutrient dense foods. Many people follow what is called the Standard American Diet, which tends to be low in micronutrients and highly processed.
To support proper health, we need to eat nutrient dense foods grown in nutrient rich soil.
Chronic stress can also increase the body's demand for nutrients. During stressful periods, the body uses more magnesium, B vitamins, and other nutrients. This increased demand can lead to deficiencies over time.
Once levels become low, it can be difficult to restore them through food alone.
In many cases, supplementation may be needed for several months while levels are restored.
Magnesium Deficiency: A Common Example
Many clients tell me they are already taking magnesium but do not notice much improvement.
Often when I ask how much they are taking, they say one or two capsules per day.
Magnesium is a large mineral. One or two capsules may only provide around the daily recommended intake of 400 milligrams.
However, when replacing a deficiency, people often need closer to 800 milligrams or more. This is when they begin to notice improvements in stress levels, sleep quality, and overall well being.
I once worked with a client who had suffered from severe migraines for years. He was even missing work because of them.
Magnesium replacement was a simple intervention that played a major role in resolving his migraines.
In his case, years of alcohol use and lifestyle factors likely depleted his magnesium stores.
There are many different factors in life that can increase the body's need for micronutrients.
Testing for Micronutrient Deficiencies
So what can you do about this?
One option is running a comprehensive micronutrient panel. Ideally, preventative healthcare would cover this type of testing, but unfortunately insurance usually does not.
Doctors can sometimes test individual vitamins and minerals, but a full panel that measures over 30 nutrients at the cellular level can provide much more useful information.
If a deficiency is confirmed, higher doses of supplements can be used to restore levels. It usually takes about four to six months to fully replace a deficiency.
Another option is reviewing symptoms and medical history to estimate likely deficiencies. This approach is sometimes used when lab testing is not possible.
Gut Health, Autoimmunity, and Weight Loss
The lining of the gut is naturally semi permeable. This allows nutrients to move from the digestive tract into the bloodstream.
However, if the gut becomes too permeable or if the immune system reacts strongly to certain foods, this can contribute to autoimmune conditions.
One example is Hashimoto's thyroid disease. When thyroid function is affected, weight loss becomes much more difficult.
The goal is to support a healthy gut lining and reduce unnecessary immune reactions to food.
How the Gut Lining Heals
The good news is that the gut lining regenerates quickly.
The cells that make up the gut lining turn over roughly every three to five days. The body constantly works to repair itself when it has the proper support.
One important compound that helps support the gut lining is butyrate.
Butyrate is produced when beneficial bacteria in the large intestine ferment dietary fiber. This process creates short chain fatty acids that nourish the cells lining the gut.
Butyrate is one of the most important fuel sources for these cells and helps maintain a strong gut barrier.
Why Fiber Can Sometimes Cause Symptoms
Many people try to increase fiber intake but experience bloating or gas.
This happens because bacteria in the large intestine ferment fiber. That fermentation process produces beneficial compounds like butyrate, but it can also produce gas if the gut is not balanced.
When the gut microbiome is healthy, fiber becomes easier to tolerate and provides important benefits.
Prebiotics are fibers that feed beneficial bacteria. Probiotics are the beneficial bacteria themselves. When these bacteria ferment fiber, they produce postbiotics like butyrate.
These compounds support gut health and help maintain a healthy intestinal lining.
Supporting Gut Health for Better Weight Balance
While the term "leaky gut" is debated in medicine, most professionals agree on one thing.
A healthy gut lining is beneficial for overall health.
Eating a well balanced diet with whole, fiber rich foods supports beneficial bacteria. These bacteria produce compounds that strengthen the gut lining and may reduce the risk of autoimmune diseases that can interfere with weight loss.
In some cases, butyrate supplements may also be helpful, especially for individuals with inflammatory bowel conditions such as Crohn's disease or ulcerative colitis.
Free Guide: 5 Ways to Improve Gut Health
Before we wrap up, I want to share a free guide called 5 Ways to Improve Gut Health.
These are strategies your conventional doctor may not have discussed with you. Not because they do not care, but because most physicians receive limited training in nutrition science.
Working with gut health professionals alongside your conventional doctor can often help address persistent digestive symptoms and support long term health.
Easily schedule your Initial Appointment here. 70% of our clients get insurance coverage, and the appointments are via privacy-secure Zoom video
Download Our FREE GUIDE: 5 WAYS TO IMPROVE GUT HEALTH
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