Types Of Dietary Antioxidants
Antioxidants can be categorized as either water- or fat-soluble.
Water-soluble antioxidants perform their actions in the fluid inside and outside cells, whereas fat-soluble ones act primarily in cell membranes.
Important dietary antioxidants include:
- Vitamin C. This water-soluble antioxidant is an essential dietary nutrient.
- Vitamin E. This fat-soluble antioxidant plays a critical role in protecting cell membranes against oxidative damage.
- Flavonoids. This group of plant antioxidants has many beneficial health effects .
Many substances that happen to be antioxidants also have other important functions.
Notable examples include curcuminoids in turmeric and oleocanthal in extra virgin olive oil. These substances function as antioxidants but also have potent anti-inflammatory activity (
For this reason, most health professionals advise people to avoid high-dose antioxidant supplements, although further studies are needed before solid conclusions can be reached.
Eating plenty of antioxidant-rich whole food is a much better idea. Studies indicate that foods reduce oxidative damage to a greater extent than supplements.
For example, one study compared the effects of drinking blood-orange juice and sugar water, both of which contained equal amounts of vitamin C. It found that the juice had significantly greater antioxidant power .
These results suggest that foods compounds work synergistically. Taking just one or two isolated nutrients wont have the same beneficial effects.
Bottom Line On Antioxidants And Disease Prevention
Excessive free radicals contribute to chronic diseases including cancer, heart disease, cognitive decline, and vision loss. This doesnt automatically mean that substances with antioxidant properties will fix the problem, especially if they are taken out of their natural context. The studies so far are inconclusive but generally dont provide strong evidence that antioxidant supplements have a substantial impact on disease. Keep in mind that most of the trials conducted have had fundamental limitations due to their relatively short duration and inclusion of people with existing disease. At the same time, abundant evidence suggests that eating whole in fruits, vegetables, and whole grainsall rich in networks of naturally occurring antioxidants and their helper moleculesprovides protection against many scourges of aging.
Smoking Increases Vitamin C Needs
Smoking causes many types of cancers, largely because cigarette smoke contains toxins that cause oxidative damage to your bodys cells .
Because of this increased exposure to free radicals, research suggests that people who smoke need 35 mg more of vitamin C per day than people who dont smoke. Similarly, exposure to secondhand smoke also increases vitamin C needs .
Yet, this additional need for vitamin C can be easily met through diet and without taking antioxidant supplements.
For the most part, the use of antioxidant supplements is discouraged, though the antioxidant vitamin C can benefit people with the common cold or those who smoke. Still, needs can often be met through diet instead of supplements.
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What The Science Says
Several decades of dietary research findings suggested that consuming greater amounts of antioxidant-rich foods might help to protect against diseases. Because of these results, there has been a lot of research on antioxidant supplements. Rigorous trials of antioxidant supplements in large numbers of people have not found that high doses of antioxidant supplements prevent disease. This section describes the preliminary research findings, the results of the clinical trials, and possible explanations for the differences in study results.
Get Your Antioxidants From Food
Getting antioxidants from food rather than supplements is much safer and healthier.
All foods contain different antioxidants in varying amounts, so its important to include a variety of foods in your diet.
While animal-based products, such as eggs and dairy products, have antioxidants, plant-based foods are particularly high in them (
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What Are Vitamins A C And E
Vitamins A, C and E are essential nutrients which have antioxidant activity. Laboratory and animal studies have found some scientific basis for their use, but current evidence from studies on humans suggests that antioxidant vitamins arent effective in treating rheumatoid arthritis. Evidence from trials of the effectiveness of vitamin E in treating osteoarthritis provided mixed results. Results for early trials into the use of vitamin C in treating osteoarthritis are encouraging, but they need confirmation by larger trials.
- Family: Nutritional supplement
- Scientific name: Vitamin A , vitamin C and vitamin E
Vitamins are nutritional substances which you need in small amounts in your diet. Vitamins A and E are fat-soluble vitamins, meaning theyre stored in your bodys fat cells, but they need to have their levels topped up regularly. Vitamin C is a water-soluble vitamin. Your body stores all water-soluble vitamins except for vitamin B12 for only a brief period of several weeks to several months and then gets rid of them through the urine. This is why you need to take water-soluble vitamins daily.
Vitamins can be found in foods or can be produced in laboratories . You can buy vitamin capsules from high-street shops.
What Are The Best Antioxidants
No single antioxidant does everything. You need a variety.
The best way to get them, and many other nutrients, is to eat a wide variety of plant foods. In particular, vegetables, fruit, nuts, seeds, extra virgin olive oil, wholegrains and tea.
There are two particular antioxidants lutein and zeaxanthin that might help prevent macular degeneration in the eyes of some older people. They are found in egg yolk, kale and green leafy vegetables. They are also in some antioxidant supplements.
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Whats The Harm In A Little Pill
Dietary supplements can cause side effects and may interact with prescription medications. For example, vitamin E supplements can increase bleeding in people who take blood thinners. Keep your health care provider up to speed on any supplements you decide to take.
This is where it gets risky
High doses of supplements can come with even higher risks. Theres a connection between taking high doses of beta-carotene and lung cancer in smokers. Vitamin E supplements may increase risk of prostate cancer and stroke. Stick to doses that are recommended by your doctor.
Not necessarily great for athletic performance
Because free radicals are produced during exercise, you might theorize that antioxidants would improve athletic performance.
A 2014 study of 54 young people assessed their performance during a training program while taking a daily dose of vitamins C and E. Study participants who took the vitamins rather than placebo had impaired adaptations in their muscles .
Vitamin C For The Common Cold
Vitamin C has not been shown to prevent the common cold, but it may reduce its severity and duration.
In a meta-analysis in more than 11,000 people, taking vitamin C supplements was shown to decrease the duration of colds by 8% while also decreasing its severity .
Its best to take vitamin C in smaller doses usually less than one gram as its absorption decreases with higher doses. In addition, higher doses may cause stomach upset .
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Trials For Rheumatoid Arthritis
Three of the four trials in this review article investigated the potential role of vitamin E in treating rheumatoid arthritis, while the fourth studied the effectiveness of selenium ACE treatment.
- In the first trial , there was no significant difference between participants on 1,200 mg per day vitamin E supplements or a placebo in morning stiffness, number of swollen joints and degree of joint tenderness, but there was a significant difference in pain reduction in favour of participants taking vitamin E.
- In both the second trial and the third trial , there was no significant difference between participants allocated 1,200 mg a day vitamin E supplements or participants given 150 mg diclofenac a day in all aspects of disease severity at the end of the trial.
- In the fourth trial , there was no significant difference between participants who received selenium ACE supplements or participants on a placebo in all aspects of disease severity at the end of the trial.
A trial of low quality. Results of this trial were given a lower weighting when we came to our conclusion about the compound.
How To Prepare And Store Cucumbers
Most people wash, slice, and toss their cucumbers into a salad. Before you do, you may want to soak them in salt water first. That will lower the amount of water in them and keep the cucumbers from making your salad dressing watery.
You can eat the peel of a cucumber. In fact, it will add fiber and vitamin A to your diet. Just be sure to wash the cucumber first.
When you shop for cucumbers, skip ones that are yellow, puffy, or have sunk-in areas, bulges, or wrinkled ends. Those overripe cucumbers won’t taste great. Instead, look for bright, firm, medium to dark-green, slender cucumbers. Any bruises or dark spots are signs of decay.
Store cucumbers unpeeled in your refrigerator’s crisper drawer. If they have a wax coating that gives them a shiny look, use them within a week. If they don’t have a wax coating, use them sooner. Don’t keep them out at room temperature long, or they will become soft and limp.
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Which Vitamins Are Antioxidants
The term antioxidants is often used as a buzzword in marketing. But its important to understand what they are and which vitamins and minerals serve as antioxidants so that you can incorporate them into your daily life. There are a variety of substances that can act as antioxidantssome more well-known than others. Follow along with Centrum to learn more.
Which Foods Contain Antioxidant Vitamins
One way to increase your bodys production of antioxidants is through consuming the right foods. Vegetarian meals and vegan snacks allow you enjoy antioxidant-rich fruits andSome of the most common dietary antioxidant sources include:
- Vitamin A This vitamin is commonly found in eggs, milk, and butter.
- Vitamin C Most fruits and vegetables will boost your supply of Vitamin C.
- Vitamin E Find this vitamin in nuts and seeds, including almonds and peanuts, as well as leafy green vegetables.
- Beta-carotene You can find this important nutrient in carrots, peas, peaches, sweet potatoes, and mangoes.
- Lutein Seek lutein in green, leafy vegetables, including spinach and collards.
- Selenium You can often find selenium in different grains and pastas, including rice and corn.
- Lycopene This carotenoid is most commonly found in red fruits including tomatoes, grapefruits, and watermelons.
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Are Antioxidant Serums Safe To Put On Your Skin
Many skincare brands boast the properties of antioxidants in their serums, creams or lotions. This is because of the benefits antioxidants like Vitamin C, Vitamin E, beta-glucans and polyphenols can have for our skin.
Theres not enough evidence on whether antioxidants in skincare could affect our internal health. Whether the antioxidants make it into our bloodstream is dependant on their molecule type, size and what other ingredients are included to aid in absorption. Each serum, cream or lotion formulation will differ.
We know its not exactly a quick fix or the silver bullet to fix the signs of aging but hear us out. Getting a high intake of fruits and vegetables as part of a balanced diet is the best way to get all those nutrients that help your skin glow!
Best Veggie Supplement: Sunwarrior Clean Green & Protein
- A great source of protein, calcium, and iron.
- Includes organic fermented pea protein.
- Soy-free, gluten-free, dairy-free, non-GMO, vegan.
This Sunwarrior blend includes natural plant-based proteins to help you build lean muscle, and a blend of vegetables with broccoli, onion extract, tomatoes, carrots, spinach, kale, and brussels sprouts. Ingredients like goji berries, yellow peas, and coconut add even more natural antioxidants.
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Determination Of Retinyl Acetate Retinyl Palmitate
Vitamin A content was expressed as g RE per serving using the following factors: 0.872, 0.546, and 0.167, respectively, for retinyl acetate, retinyl palmitate, and -carotene. Vitamin E content was expressed as mg -TE per serving using the factor 0.91 for -tocopheryl acetate . A serving portion refers to the daily intake recommended by the supplement manufacturer.
Best Resveratrol Supplement: Vital Plan Prevention Plus
- Includes a number of antioxidant vitamins and nutrients, including Vitamin A and Selenium.
- Gluten-free, non-GMO, peanut-free, egg- and dairy-free.
Not only is this one of the best vitamin supplements for antioxidants, but it also includes vitamin D to boost your immune system, as well as vitamins C, B, A, and E. These capsules also include trans-resveratrol from Japanese Knotweed which can help your body defend against cardiovascular disease by promoting heart health.
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What Are The Best Antioxidant Foods
Vegetables and fruit tend to be packed full of antioxidants. Eating a wide variety of them can help ensure you get a diverse range of different antioxidants to optimise your health. There are hundreds of antioxidants in not only fruit and vegetables, but nuts, seeds, olive oil and wholegrains.
You can get the following antioxidants from these food sources:
- Vitamin A liver, sweet potatoes, carrots, milk and egg yolks
- Vitamin C broccoli, Brussels sprouts, cauliflower
- Vitamin E almonds, avocado, leafy greens
- Carotenoids apricots, asparagus, broccoli
- Zinc beef, oysters, pumpkin seeds
- Selenium Brazil nuts, fish, shellfish
- Beta-carotene carrots, pumpkin, sweet potato, spinach
- Lycopene tomato, watermelon, grapefruit.
The Australian Dietary Guidelines outline the types of foods you should be eating to reduce your risk of diet-related conditions and chronic diseases.
In some cases, your doctor may recommend you take antioxidant supplements if your diet is inadequate.
What Are Antioxidants
Antioxidants are molecules that fight free radicals in your body.
Free radicals are compounds that can cause harm if their levels become too high in your body. Theyre linked to multiple illnesses, including diabetes, heart disease, and cancer.
Your body has its own antioxidant defenses to keep free radicals in check.
However, antioxidants are also found in food, especially in fruits, vegetables, and other plant-based, whole foods. Several vitamins, such as vitamins E and C, are effective antioxidants.
Antioxidant preservatives also play a crucial role in food production by increasing shelf life.
Free radicals are constantly being formed in your body.
Without antioxidants, free radicals would cause serious harm very quickly, eventually resulting in death.
However, free radicals also serve important functions that are essential for health (
As a result, your body needs to maintain a certain balance of free radicals and antioxidants.
When free radicals outnumber antioxidants, it can lead to a state called oxidative stress.
Prolonged oxidative stress can damage your DNA and other important molecules in your body. Sometimes it even leads to cell death.
Damage to your DNA increases your risk of cancer, and some scientists have theorized that it plays a pivotal role in the aging process .
Several lifestyle, stress, and environmental factors are known to promote excessive free radical formation and oxidative stress, including:
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How Do They Work
Vitamins A, C and E have antioxidant properties. This means they can override harmful molecules, known as free radicals, which are produced within your cells and which may cause tissue damage or disease. Your body produces its own antioxidants but its thought that antioxidants in the diet help destroy excess free radicals.
Some laboratory and animal studies have also found that vitamin E may help to treat osteoarthritis by stimulating the growth of cartilage cells. Other studies have found that it has some anti-inflammatory properties.
Studies on vitamin C have found that it can stimulate the production of collagen and proteoglycan and can protect against the breakdown of cartilage in animal studies.
What Are Antioxidants And Why Are They Important
Antioxidants are either natural or man-made substances, which protect the body from the effects of free radicals. Free radicles are molecules that are produced during the breakdown of food and cells or when exposed to smoking or radiation.
- Free radicals play an important role in preventing various diseases, such as diabetes, cancer, and heart diseases.
- Fruits, vegetables, nuts, and grains are good sources of antioxidants, and they can be found in dietary supplements.
- Fruits, vegetables, and whole grains are rich sources of fiber, low in saturated fats, and cholesterol, and rich in vitamins and minerals.
- The major vitamin antioxidants are vitamins E and C, beta-carotene, and other carotenoids. These antioxidants protect against the damage caused by free radicals.
- Other natural antioxidants include flavonoids, tannins, phenols, and lignans.
- A study reported that antioxidants in whole foods are more effective than dietary supplements or pills.
- To meet the daily nutritional values, take at least one medium-sized fruit or a cup of cooked or boiled vegetables.
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Should You Take Antioxidant Supplements
Antioxidant supplements are popular and commonly considered healthy.
In part, this is because fruits and vegetables, which are rich in antioxidants, are associated with many health benefits, including a reduced risk of disease .
Yet, there is strong evidence to suggest that you may be doing your health a disservice by supplementing with antioxidants.
This article explains what antioxidant supplements are and why its better to get your antioxidants from food.
Antioxidant supplements contain concentrated forms of antioxidants, which are substances that stabilize free radicals.
Your body naturally produces free radicals when you exercise and digest food.
Environmental factors, such as UV exposure, air pollutants, tobacco smoke and industrial chemicals like pesticides, are also sources of free radicals .
If free radicals exceed your bodys ability to regulate them, a condition called oxidative stress occurs. Over time, this contributes to aging and the development of diseases, including cancer .
The main antioxidants that help regulate free radicals in your body are the vitamins A, C, and E and the mineral selenium.
Antioxidant supplements contain 701,660% of the daily value of these key nutrients .
Its commonly thought that taking antioxidant supplements prevents the damage caused by free radicals to the bodys cells, thereby promoting longevity and warding off disease.
However, taking antioxidant supplements in high amounts can do just the opposite.