As a dietitian, I spend a lot of time talking about food, but signing up for an eating challenge isn’t something most of us do regularly. That said, I’ve tried a few food challenges before, so when my editor suggested trying to eat a sweet potato every day for a week and write about it, I was both intrigued and a little skeptical. My approach to eating has always focused on variety and balance. We constantly preach “eat the rainbow” and encourage rotating your carbohydrate sources. So, committing to one specific root vegetable for seven straight days felt a bit counterintuitive.
However, sweet potatoes are undeniably nutrient-dense, and I was curious to see how a daily dose would impact my body. My initial thoughts were mostly practical. Would I get tired of the taste? Would I notice any significant shifts in my digestion or energy levels? Armed with a bag of medium-sized, orange-fleshed sweet potatoes, I decided to find out exactly what happens when you make this vibrant vegetable a daily staple.
What happened when I ate sweet potato every day
To conduct my experiment, I chose to stick to the orange varieties of this tuber instead of mixing it up and sprinkling in white or purple-fleshed sweet potatoes to keep things consistent, although, those are delicious varieties as well. Over the course of the week, I baked, mashed, roasted, and even air-fried my daily sweet potato to keep things interesting. I ate them with my dinner most nights, and occasionally made them the star of a hearty breakfast. Side note: If you haven’t tried sweet potato topped with nut butter and a sprinkle of cinnamon, I highly recommend it! One surprise was how versatile sweet potatoes are across different meals, from savory to sweet. One day, I added a leftover sweet potato to my smoothie! I am telling you–this veggie is very versatile.
I also found myself noticing subtler changes as the days went by. Besides feeling more energized in the afternoons and enjoying steady digestion, I was surprised at how well sweet potatoes kept me feeling satisfied after meals. I didn’t experience the usual cravings for dessert or snacks late at night. Another unexpected perk: my skin felt a bit more hydrated and clear after a few days, though it’s tough to say if it was solely due to the sweet potatoes. Still, discovering these small, positive shifts made the challenge more fun than I expected.
Digestion was another area where I felt a noticeable difference. Because sweet potatoes are a source of dietary fiber, my digestive system ran very smoothly. I felt full and satisfied after meals, which naturally curbed my desire to snack on less nutritious options later in the day. While eating the exact same vegetable every day did get slightly monotonous by day six, the physical benefits made the experiment well worth the effort.
Sweet potato nutrition
Sweet potatoes pack a serious nutritional punch. According to the United States Department of Agriculture(USDA), one medium baked sweet potato (about 114 grams) with the skin provides approximately:
- Calories: 103
- Carbohydrates: 24 grams
- Dietary fiber: 4 grams
- Protein: 2 grams
- Vitamin A: Well over 100% of the daily value
- Potassium: 12% of the daily value
- Vitamin C: 25% of the daily value
Beyond these basic macronutrients and vitamins, sweet potatoes are a source of antioxidants, particularly beta-carotene in the orange varieties and anthocyanins in the purple ones. These compounds help protect your cells from daily oxidative stress and support overall wellness.
Health benefits of sweet potato
Promotes healthy digestion
One of the standout benefits of sweet potatoes is their dietary fiber content. A medium sweet potato provides both soluble and insoluble fiber. Soluble fiber absorbs water and takes on a gel-like consistency during digestion, which helps soften stools. Insoluble fiber adds bulk, helping food move smoothly through your digestive tract and promoting regular bowel movements.
Additionally, the specific types of fiber found in these root vegetables can act as prebiotics. This means they provide fuel for the beneficial bacteria living in your gut. A thriving and diverse gut microbiome is linked to better nutrient absorption and may even play a role in maintaining a healthy intestinal lining, keeping your digestive system functioning comfortably.
Supports the immune system
The vibrant orange color of a classic sweet potato comes from beta-carotene, a compound that your body converts into vitamin A. Vitamin A is crucial for a properly functioning immune system. It helps maintain the health of your mucous membranes, particularly in your gut and respiratory tracts, which act as a primary physical barrier against unwanted environmental pathogens.
Sweet potatoes also offer a solid amount of vitamin C. This water-soluble vitamin acts as an antioxidant and supports the cellular functions of both the innate and adaptive immune systems. While eating sweet potatoes won’t magically prevent you from catching a cold, regularly consuming foods rich in these specific vitamins provides your body with the raw materials it needs to mount a healthy immune response.
Helps maintain stable energy levels
Carbohydrates often get a bad reputation, but they are your brain and body’s preferred source of energy. Sweet potatoes are a complex carbohydrate, meaning they are made up of long chains of sugar molecules that take your body more time to break down. This slow digestion process translates to a gradual, steady release of glucose into your bloodstream.
Because they tend to not to cause a rapid spike in blood sugar, especially when eaten with their fiber-rich skin and paired with a source of protein or healthy fat, they are an excellent food for sustained energy. This makes them a practical choice for a midday meal to power you through an afternoon of work, or as a pre-workout snack to fuel a moderate exercise session without leaving you feeling sluggish later.
Contributes to eye health
We often hear that carrots are good for our eyes, but sweet potatoes are right up there with them. The high beta-carotene content is a major player here.Severe vitamin A deficiency is a leading cause of preventable blindness globally, and eating foods rich in its precursor (beta-carotene) is a safe and effective way to ensure you meet your daily needs for this crucial nutrient.
Who should not eat sweet potato?
While sweet potatoes are a fantastic addition to most diets, there are a few exceptions. People with a history of calcium-oxalate kidney stones may need to moderate their intake. Sweet potatoes contain oxalates, naturally occurring compounds that can bind to calcium in the digestive tract and potentially contribute to stone formation in susceptible individuals.
Additionally, individuals with chronic kidney disease who need to monitor their potassium intake should be cautious. Sweet potatoes are relatively high in potassium, and impaired kidneys may struggle to filter excess amounts from the blood. Finally, though rare, some individuals may have a true food allergy to sweet potatoes and should avoid them entirely. If you have specific medical conditions, it is always best to consult with your healthcare provider or a registered dietitian.
Our expert take
Eating a sweet potato every day for a week was a great reminder of just how powerful whole foods can be for our daily energy and digestion. As a dietitian, I can confidently say that sweet potatoes are a wonderfully nutritious, accessible, and versatile carbohydrate source that deserves a regular spot on your plate. They offer a rich supply of vitamins, steady energy, and gut-friendly fiber.
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