Vitamin C question, and is there any multi vitamins with 0 beta-carotene?

changed · � #16 � 03-28-2010, 07:50 AM

Ok here is one that may be good for smokers like myself.

only 40% of the vitamin a @ 5000 iu is Beta-Carotene.

https://www.iherb.com/Now-Foods-Liqui...3-ml/4349?at=0

hwenley · � #17 � 03-28-2010, 12:25 PM

I checked out your link to the liquid supplement. It's OK - I recommend a high-quality broad spectrum supplement called the Essentials by Usana Health Sciences. Go with the highest quality that you can afford.
Cheers,
Helen

hwenley · � #18 � 03-28-2010, 06:52 PM

Smoking cigarettes ages skin faster than anything else apart from sun damage. There's no gentle way of saying this. If you smoke cigarettes you need to stop. Aside from the many health issues associated with smoking - if you care at all about wrinkles and you want to look younger for longer - then smoking is out.

Smoking restricts blood flow through the capillaries (tiny veins near the skins surface) preventing oxygen and nutrients getting to the skin smoking increases production of an enzyme which breaks down the supply of collagen to the skin's structure. Collagen supply is vital to the skin's elasticity. It decreases with age but smoking cigarettes accelerates this process. Vitamin C is required for healthy collagen prodcution and smoking destroys Vitamin C fast.

Smoking reduces the body's store of vitamin A which provides protection from skin damage smoking gets in the way of absorption of vitamin C - a vital antioxidant for skin protection and health smokers continual puckering from drawing on a cigarette and squinting in reaction to the cigarette smoke results in deeply wrinkled skin around the eyes and mouth - classic signs of 'smoker's face'.

Acknowledgement: Julie Dennis Skin Care

To combat aging for smokers I would recommend you take a broad-spectrum high-quality mega antioxidant and multi mineral, a high quality grapeseed extract and high quality omega-3. That way you would get the extra nutrition that your body is lacking as well as preventing further aging.

Cheers,
Helen

Ted_Hutchinson · � #19 � 06-24-2010, 03:27 AM

Interaction of ascorbic acid and tocopherol on beta-carotene modulated carcinogenesis.

Quote:

Epidemiological studies suggested that above average intake of beta-carotene (betaC) might reduce cancer risks. However, clinical trials found that betaC supplementation did not reduce the occurrence of non-melanoma skin cancer and that smokers suffered a significant increase in lung cancer incidence.
Further, supplementing semi-defined diets with betaC failed to provide photoprotection as reported earlier for closed-formula rations, but actually exacerbated carcinogenesis.
A redox mechanism, based upon one-electron transfer rate constants, proposed interactions between tocopherol, betaC and ascorbic acid in which the carotenoid radical cation, a strongly oxidizing radical, would be repaired by ascorbic acid.
If the carotenoid radical cation remained unrepaired, this strongly oxidizing species could account for the pro-carcinogenic activity of betaC.
Data from nutritional studies supported an interaction of tocopherol and betaC but not with ascorbic acid.
The repair of the betaC radical cation must be dependent on factors other than ascorbic acid, e.g., other carotenoids or unidentified phytochemical(s).

World's Healthiest foods has more to say on the subject

Quote:

Unlike supplements, foods rich in beta-carotene pose no lung cancer risk. Synthetic beta-carotene supplements have been found to increase the risk of both colorectal and lung cancer in smokers, especially those who also drink alcohol. A study published by an international team in the January 2004 issue of Cancer Epidemiology Biomarkers and Prevention indicates that beta-carotene consumed as part of whole foods has no such negative effects. This study, which pooled data from seven large cohort studies running between 7 and 16 years and involving a subject population of 399,765 participants in North America and Europe, found that beta-carotene from foods was not associated with any increased risk of lung cancer among current smokers or non-smokers. Other carotenoids in foods (lutein, zeaxanthin and lycopene) were also found to have no association with lung cancer risk. (February 26, 2004)

gigabyte556 · � #20 � 09-13-2011, 09:38 PM

Sorry to bump an old thread but I had some questions and felt this was probably the best one to post in..

I am a smoker (not heavy maybe 1 pack a week) and right now I'm taking Opti-men multi vitamin (https://www.iherb.com/Optimum-Nutriti...ets/27540?at=0)

The ingredients show Vitamin A "as CaroCare natural mixed carotenoids"

Does this mean it's safe for me to take this as theres no mention of Beta-Carotene?

Thank you!

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