Is TikTok right – will eating three carrots a day really give me a natural tan?
Why would carrots affect your skin tone?
Carotenoids are natural pigments that give red, orange, and yellow colors to fruits and vegetables. Think of them as nature’s paint. There are many carotenoids, including lutein, lycopene, alpha-carotene, and beta-carotene. Beta-carotene is the carotenoid responsible for a carrot’s vibrant orange color.
Once a beta-carotene-containing food is digested, special cells in the gut break it into two molecules of retinol (also known as vitamin A). This vitamin A is then used in various critical bodily functions such as vision, reproduction, immunity, and growth.
The body controls the conversion of beta-carotene into vitamin A based on what it needs. So, when the body has enough vitamin A, it slows down or stops converting beta-carotene into vitamin A. Any extra beta-carotene is then either stored in the liver and fat tissue, excreted through poo, or removed via sweat glands in the outer layer of the skin. This is when the orange skin “tan” can happen. In medicine, this is called carotenoderma.
Carotenoderma gives your skin a yellow/orange pigment that is not the same color you’d turn from a sun tan. It is concentrated in the palms of the hands, the soles of the feet, and smile lines near the nose.
How many carrots are we talking?
A few days of high carrot intake will unlikely result in a change in skin color. No high-quality trials have been conducted to test the relationship between the number of carrots eaten per day and skin color changes or other outcomes. However, there is evidence that carotenoderma appears when blood levels get higher than 250-500 µg/dL.
One published case report found eating around 3 kilograms of carrots per week (about seven large carrots a day) induced skin color changes. Other experts suggest you would need to eat at least ten carrots per day, for at least a few weeks, for color changes to occur. Most people would find this carrot intake challenging.
The amount of carrots needed to change skin color will also depend on the variety of carrot, its size and ripeness, the way the carrot is prepared (raw or cooked), and whether or not the carrot is eaten with a source of fat. A person’s weight and gastrointestinal health will also impact the amount of beta-carotene absorbed.
Is it dangerous to eat too much beta-carotene?
Vitamin A comes in two main forms, preformed vitamin A and provitamin A. Preformed vitamin A is the active form of vitamin A found in animal-based foods including liver, fish liver oil, egg yolks, and dairy products. When you eat these foods, the preformed vitamin A is already ready to be used by the body.
Provitamin A compounds (including beta-carotene) are the precursors to vitamin A. Provitamin A compounds need to be converted into active vitamin A once inside the body.
Preformed vitamin A can be toxic if consumed in large amounts. However, provitamin A compounds don’t cause vitamin A toxicity in humans because the body tightly regulates the conversion of provitamin A compounds to vitamin A. For this reason, there are no recommended limits on how much beta-carotene a person can safely consume each day.
There is, however, some evidence that taking high-dose beta-carotene supplements (20 mg per day or more) increases lung cancer risk in people who smoke cigarettes or used to smoke. This may be due to changes to chemical signaling pathways.
The Cancer Council therefore recommends avoiding high doses of beta-carotene supplements (more than 20 mg per day), especially if you smoke. This does not relate to whole foods though, so people who smoke should still consume fruits and vegetables that have beta-carotene.
Why you should aim for a variety of vegetables
You can still use food to look great without focusing on eating carrots. Incorporating various colorful vegetables, particularly those high in carotenoids, into your diet may promote a natural radiance and a gentle enhancement in skin tone.
Rather than processed foods, a high variety of fresh vegetables provide various nutrients, and some may have what others lack. So it’s important to have a balanced diet that doesn’t depend on a single type of vegetable.
No matter how many carrots you eat in a day, it’s important to protect your skin with sunscreen when going outside.
Conclusion
While eating three carrots a day may not give you a natural tan, incorporating a variety of colorful vegetables into your diet can promote a natural radiance and a gentle enhancement in skin tone. It’s also important to note that beta-carotene is not toxic in whole foods, but high doses of supplements can increase lung cancer risk in smokers.
FAQs
Q: Will eating three carrots a day really give me a natural tan?
A: No, eating three carrots a day is unlikely to result in a change in skin color.
Q: How many carrots do I need to eat to see a change in skin color?
A: It’s unlikely that eating three carrots a day will result in a change in skin color. You would need to eat a large amount of carrots for an extended period to see a change.
Q: Is it safe to eat too many carrots?
A: No, eating too many carrots is not toxic, but high doses of beta-carotene supplements can increase lung cancer risk in smokers.
Q: Can I get too much beta-carotene from whole foods?
A: No, the body tightly regulates the conversion of provitamin A compounds to vitamin A, so it’s unlikely that you would get too much beta-carotene from whole foods.
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