ARTICLE | nutrition | Elderly Swedes had the least skin wrinkling in
sun-exposed sites, followed by Greek-born Australians living in Melbourne, then Greeks living in Greece, followed by Anglo-Celtic Australians living in Melbourne. Age was positively correlated with actinic skin damage, and analysis was age-adjusted. Correlation of pooled data suggested that there may be less actinic skin damage with a higher intake of vegetables, olive oil, fish and legumes. After controlling for age and smoking, more actinic damage was seen with higher intakes of dairy, butter, margarine, and sugar products. Correlation analysis indicated that Greek-born Australians with a low intake of milk and coffee, but a high intake of legumes, eggplant (aubergine) dip, garlic, low-fat yogurt and polyunsaturated oil, for example, had the least skin wrinkling. Greek elderly living in rural Greece with a low intake of milk, processed meats, pudding and desserts, and butter, but a high intake of green leafy vegetables, broad beans and cheese had the least skin damage. Certain foods were found to be associated with wrinkle
A study involving 177 Greek-born individuals living
in Melbourne, Australia, and 69 individuals living in Greece, 48 Anglo-Celtic Australians living in Melbourne, and 159 Swedes living in Göteborg, Sweden, was conducted to evaluate the correlation between diet and skin appearance6
. Data was collected through an
interpreter and included information on the dietary habits of each subject during the previous year using a validated semi-quantitative food frequency questionnaire. A core food frequency questionnaire was developed by the principle investigator, and co- investigators in each country made the questionnaire more culturally sensitive. Volunteers were asked to estimate the average frequency of consumption of each food over the past year in terms of a standard portion size. Portion sizes were specified in units thought to be the most appropriate for the given food6
.
Foods were grouped into 10 major food categories: ■ Milk/milk products ■ Meat ■ Fish ■ Legumes ■ Cereal ■ Vegetables ■ Fruits ■ oils/fats ■ Sugar/sugar products ■ Alcohol. Skin microtopographic assessment was used to assess
actinic damage. Silicon rubber impressions were made of the skin and graded for skin wrinkling. Multiple regression analysis was conducted to determine the importance of age, gender, smoking and foods in explaining the variance of actinic skin damage.
50 ❚ September 2011 |
prime-journal.com
studies have shown that
supplementation with β-carotene can provide
protection against skin damage from sunlight after a minimum of 10weeks’
supplementation in the diet.
development and others reduced wrinkle formation. For Anglo-Celtic Australians these included sardines, cheese, asparagus, celery, vegetable juice, grapes, melon, apple, fruit salad, jam, multigrain bread, prunes and tea. Swedish elderly with a low intake of roast beef, meat soup, fried potato, cantaloupe, grapes, canned fruit, ice cream, cakes and pastries, soft drink, but a high intake of egg, skimmed milk, yogurt, lima bean, and spinach pie had better skin. total fat intake was negatively correlated with actinic damage; the only fatty acid significantly associated with actinic damage was monounsaturated fatty acid in a protective way. Vitamin C, retinol and intake of minerals such as calcium, phosphorous, magnesium, iron, and zinc appeared to be protective against actinic damage when groups were adjusted for age and smoking. olive oil, legumes, fish, vegetables, and cereal appeared to be protective against cutaneous actinic damage. High intake of sugar, meat and dairy products appeared to be adverse. it was hypothesised that the antioxidant activity related to the polyphenols present in plant food such as tea, apples, onions, garlic and eggplant, are at least somewhat responsible for many of the protective effects against oxidative stress of the skin6
.
Effects on immune response Dietary agents found in plants often possess anti-inflammatory,
. the benefits for skin may be observed with
immunomodulatory and
antioxidant properties. Common examples are the retinoids, green tea polyphenols, grape seed proanthocyanidins, resveratrol, curcumin, and silymarin7
oral consumption and topical application to the skin, although the mechanism of activity may differ. uV exposure has been shown to be immunosuppressive. immune reactions observed in the skin include contact hypersensitivity, delayed-type hypersensitivity, and bacterial and fungal infections. Local and systemic immune suppression may also
result. uV radiation can stimulate keratinocytes to release immunosuppressive mediators such as
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