Not digesting fats leads to fatty, greasy, floating, foul-smelling stools (steatorrhea), along with digestive issues like bloating, gas, diarrhea, and cramps; over time, it causes weight loss and deficiencies in fat-soluble vitamins (A, D, E, K), resulting in symptoms like bruising, night blindness, weak bones, and skin/hair problems.
Are You Struggling to Digest Fatty Foods?
When you don't have enough of the MCAD enzyme in your body, certain fats called medium-chain fatty acids can't be broken down and turned into energy. This leads to low energy and low blood sugar. Also, fatty acids can build up in body tissues and cause damage.
Poo that is yellow, floating and greasy can often be difficult to flush and it might take more than one flush of the toilet to get rid of the poo. Sometimes if this symptom is severe, there can be visible oil floating on the surface of the toilet water. Not absorbing fats is called a malabsorption problem.
Too much fat in the digestive tract can also cause digestive problems like diarrhea, which happens when unabsorbed fat collects in the small intestines and colon, where water is pulled in and creates diarrhea. If it becomes chronic, diarrhea can lead to malnutrition because the body can't absorb the nutrients it needs.
A malabsorption syndrome should be suspected when a patient's history includes ongoing or chronic diarrhea, unintentional weight loss despite normal nutrient intake, and greasy, voluminous, foul-smelling stools that reportedly float. Additional components of the history may include flatulence, bloating, and borborygmi.
Foods that cause diarrhea after eating
If steatorrhea persists, becomes severe, or is accompanied by other symptoms like weight loss, malnutrition, or dehydration, it is important to follow up with your healthcare provider. Long-term untreated steatorrhea can lead to serious complications, including deficiencies, malnutrition, and if unmanaged, even death.
If you have too much fat in your stool, it may be a sign that food is moving through your digestive system without being broken down and absorbed correctly. This is called malabsorption. Having a fecal fat test is the best way to find out if you have malabsorption.
Brown: Normal and healthy, comes from bile. Green: Often caused by leafy greens, iron supplements, or rapid transit through the intestines. Yellow or greasy: May suggest malabsorption, especially if stools are foul-smelling or float. Black: Can result from iron supplements, bismuth medications, or upper GI bleeding.
Fat malabsorption
This is a common type of malabsorption, possibly because it has so many causes. Fats that aren't absorbed in your small intestine pass to your colon, causing fatty stools (steatorrhea). Fatty stools are greasy and runny and particularly smelly. They may be light-colored and float.
Vitamin B is required particularly by the gut mucosa. Vitamin B3, nicotinamide, if deficient is a cause of diarrhoea and this could occasionally be present in those who are malnourished, alcoholics and in association with some rare disorders.
A meal high in dietary fiber blocks some of the absorption of fats, stopping fats from moving outside the gut into the bloodstream. When there is less fat absorbed from your gut, your liver does not have to package it into LDL droplets, which lowers LDL levels in the blood.
B6 Also known as pyridoxine, B6 helps your digestive system break down protein, carbs, and fats. Biotin, or vitamin B7, is also key to breaking down fats, carbohydrates, and proteins.
The hardest foods to digest are typically fried and fatty foods, processed foods, and some proteins like red meat, beans, and dairy (especially for lactose-intolerant individuals), along with high-fiber items like whole grains, cruciferous vegetables (broccoli, cabbage), and nuts/seeds, due to fat slowing digestion or fiber/complex carbs causing fermentation, gas, and bloating. Corn, spicy foods, onions, and caffeine can also be tough on the gut.
Five keys to a happy gut
Chronic diarrhea is often the first symptom prompting one to seek medical evaluation, although diarrhea need not be present for one to have malabsorption. Steatorrhea, or fatty stools, is indicative of malabsorption. Stools will be frothy, foul smelling, and a ring of oil may be left on the toilet water.
Change in the Appearance of the Stool
A Thin, narrow, or ribbon-like stool could indicate changes inside your colon. Color: Blood, darkened, or tarry (black) stool can signal issues inside the colon. Your doctor can help determine the cause.
Description. Abetalipoproteinemia is an inherited disorder that impairs the normal absorption of fats and certain vitamins from the diet. Many of the signs and symptoms of abetalipoproteinemia result from a severe shortage (deficiency) of fat-soluble vitamins (vitamins A, E, and K).
Early signs of pancreas problems often include upper abdominal pain radiating to the back, nausea, vomiting, and digestive issues like fatty, foul-smelling stools, but can also manifest as new-onset diabetes, unexplained weight loss, fatigue, or jaundice (yellowing of skin/eyes). These symptoms, particularly persistent pain or significant weight loss, warrant immediate medical attention as they can signal conditions like pancreatitis or pancreatic cancer, says Mayo Clinic, Cancer Australia, and National Institutes of Health (NIH) | (.gov).
Steatorrhea means that you have excessive amounts of fat in your poop. Fatty poops are different from normal poops. They tend to be looser, smellier and paler in color, like clay. They might float.
What are the symptoms of a leaky gut?
To harden stool, eat bland, low-fiber foods like the BRAT diet (bananas, rice, applesauce, toast) and other binding foods like oatmeal, boiled potatoes, crackers, and lean protein (chicken, fish), while avoiding gas-producing foods and dairy temporarily to help firm things up quickly. Soluble fiber foods like oats, carrots, and chia seeds can also help bind stools for some, but it's a temporary fix, not a long-term solution for constipation.
Foods that can be inflammatory - Highly processed foods, like corn chips, fried foods and too much red meat, sugar, wheat, rye and barley in people with gluten allergies of celiac disease.