What Is Antioxidant?

Lung Cancer Prevention :

Before we can understand how antioxidant work in our body and help to protect us against persisting degenerative disease, let us have a look on the meaning of the word "antioxidant"

Anti = against, opposition to, healthful in nature

Lung Cancer Prevention

Oxidant = generally known as free radical, is the substance produces in the human body during the million of cells process that use oxygen during the oxidative reaction. This oxidants is then causes the damage to cells, tissues, Dna, proteins and fats which lead to persisting disease (heart disease, allergic reaction, cancers, lung disorder, low immune defence, arthritis and etc).

Lung Cancer Prevention :What Is Antioxidant?

Thus the word antioxidant means "against" the "free radical" generated in our bodies.

First we need to understand that there is no way that we human can avoid ourselves from the damage of free radical, we can only minimise their destructive ensue to a vey minimum level that allow our body's natural anti-oxidants to work on the sewerage duties.

(Certain enzymes in our bodies act as the natural antioxidants which are Superoxide Dismutase, Catalase, and Glutathione. Superoxide Dismutase changes the buildings of oxidants and breaks them down into hydrogen peroxide. Catalase in turn, breaks down hydrogen peroxide into water and tiny oxygen particles or gasses. Glutathione is a detoxifying agent, which binds with dissimilar toxins to change their form so that they are able to leave the body as waste).

Unfortunately in our modern lifestyle, we are constantly exposed ourselves to risk factors that make our body non-stop in producing free radical such as:

- stress
- pollution(air, water, sun ray)
- non wholesome diet (high carbo and fatty but low fibre diet or alcoholic beverages)
- smoking (2nd hand smokers)
- Radiation(handphone, Tv, indiscernible wireless broadband connection)
- Medicines
As a ensue from above risk factors, we are continuously seeing the "modern" illness happens to the habitancy surrounds us and even to ourselves. Thus that is where the health supplement comes into our diet.

For each nutrient that available in our diet, it is carefully by Rda (Recommended Dietary Allowance) which is defined as the mean daily dietary intake level that is sufficient to meet the nutrient requirement for a wholesome individual. According to Us Food and cusine Board(Fnb), each individual Rda is vary depends on gender and age. Due to the modern lifestyle and unhealthy diet, majority individual is getting their daily nutrients which are lower than their required Rda.

Most health supplement in the market is targeting on the oxidative reaction at cellular level to sell out the destructive ensue of free radical, they are in general group under "antioxidant" category.

Source of antioxidants:

There is wide range of antioxidant class such as:

- Carotenoid Terpenoids (eg lutein, zeaxanthin, beta carotene)
- Phenolics and their esters (eg chiroric acid, gallic acid)
- Vitamin cofactor and minerals (co-enzyme Q10, Iodine, Manganese)
- Flavanoid polyphenolics (cyanidin, hesperidin,quercetin, isoflavone phytoestrogen)
- Other non flavanoid polyphenolics (xanthones)
- Vitamins (A, C, E)
So where can we get our antioxidant supply?

It can be gained from food in general vegetables and fruits, view the list below:

Vitamin A and Carotenoids - Carrots, squash, broccoli, sweet potatoes, tomatoes, kale, collards, cantaloupe, peaches and apricots (bright-colored fruits and vegetables!)

Vitamin C - Citrus fruits like oranges and lime etc, green peppers, broccoli, green leafy vegetables, strawberries and tomatoes

Vitamin E - Nuts and seeds, whole grains, green leafy vegetables, vegetable oil and liver oil

Selenium - Fish & shellfish, red meat, grains, eggs, chicken and garlic

Other tasteless antioxidants:

Flavonoids / polyphenols - soy, red wine, purple grapes or concord grapes, pomegranate, cranberries, tea.

Lycopene - Tomato, pink grapefruit, watermelon.

Lutein - Dark green vegetables such as kale, broccoli, kiwi, brussels sprout and spinach.

Lignan - flaxseed, oatmeal, barley, rye.

So how much do we need to take all the above food to meet our Rda?

Based on the age of 35yo female, the estimated Rda for each nutrient is colse to the figures shown at this table:
vitamin A = 700 (micro-gram)
vitamin C = 75 (mg)
vitamin D = 5* (micro-gram)
vitamin E = 15 (mg)
vitamin K = 90* (micro-gram)
thiamin = 1.1 (mg)
riboflavin = 1.1 (mg)
niacin = 14 (mg)
vitamin B6 = 1.3 (mg)
foliate = 400i (micro-gram)
vitamin B12 = 2.4 (micro-gram)
pantothenic = 5* (mg)
biotin = 30* (micro-gram)
choline = 425* (mg)

calcium = 1,000* (mg)
chromium = 25* (micro-gram)
copper = 900 (micro-gram)
fluoride = 3* (mg)
iodine = 150 (micro-gram)
iron = 18 (mg)
magnesium = 320 (mg)
manganese = 1.8* (mg)
molybdenum = 45 (micro-gram)
phosphorus = 700 (mg)
selenium = 55 (micro-gram)
zinc = 8 (mg)
potassium = 4.7* (g)
sodium = 1.5* (g)
chloride = 2.3* (g)

One prominent point is that we need to be clear on the key opinion of antioxidant study which is:

An intake of antioxidants in excess of the Recommended Dietary Allowances (Rdas) is probably primary for optimal health protection.
A compound of antioxidants may be more effective than single antioxidants.
Thus, based on the optimum level of synergistic ensue of antioxidants to fix and forestall the oxidative reaction in our bodies, basically this is what we may need:

Point to ponder: Are we able to consume that estimate of food listed in above table everyday??? And either it is cost effective???

In my next blog, we will look into how the free radical cause the damage to our cells and how antioxidant work to protect it in scientific cellular level. Stay tune!

Lung Cancer Prevention :What Is Antioxidant?

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