トマト料理が皮膚を守る

 ピザとスパゲッティが日焼けやシワに対抗する良い方法だとの研究。
 毎日トマトペーストをスプーン5杯摂取すると、有害な紫外線から保護する皮膚の作用を高め、老化や皮膚がんの予防にもなる。抗酸化剤 lycopene リコペンが作用している。トマトに含まれる成分で調理されると高濃度に見られ、すでに前立腺癌のリスクを下げる効果も証明されている。マンチェスターとニューカッスルの大学の研究者が紫外線から保護し皮膚障害を防ぐことに役立っている可能性を示した。皮膚のプロコラーゲンを増加させ、日焼け防止クリームのような働きがある程度ある。
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Page last updated at 13:39 GMT, Monday, 28 April 2008 14:39 UK
Tomato dishes 'may protect skin'
http://news.bbc.co.uk/2/hi/health/7370759.stm

画像Spaghetti Bolognese
Could spaghetti bolognese have anti-ageing properties?

Pizza and spaghetti bolognese could become new tools in the fight against sunburn and wrinkles, a study suggests.

A team found adding five tablespoons of tomato paste to the daily diet of 10 volunteers improved the skin's ability to protect against harmful UV rays.

Damage from these rays can lead to premature ageing and even skin cancer.

The study, presented at the British Society for Investigative Dermatology, suggested the antioxidant lycopene was behind the apparent benefit.

This component of tomatoes - found at its highest concentration when the fruit has been cooked - has already been linked to a reduction in the risk of prostate cancer.

Now researchers at the universities of Manchester and Newcastle have suggested it may also help ward off skin damage by providing some protection against the effects of UV rays.

Anti-ageing paste?

They gave 10 volunteers around 55g of standard tomato paste - which contains high levels of cooked tomatoes - and 10g of olive oil daily. A further 10 participants received just the olive oil.


Eating tomatoes will not make you invincible in the sun, but it may be a useful addition to the sun protection tool box
Professor Mark Birch-Machin
Newcastle University

After three months, skin samples from the tomato group showed they had 33% more protection against sunburn - the equivalent of a very low factor sun cream - and much higher levels of procollagen, a molecule which gives the skin its structure and keeps its firm.

"The tomato diet boosted the level of procollagen in the skin significantly. These increasing levels suggest potential reversal of the skin ageing process," said Professor Lesley Rhodes, a dermatologist at the University of Manchester.

"These weren't huge amounts of tomato we were feeding the group. It was the sort of quantity you would easily manage if you were eating a lot of tomato-based meals."

There was a warning however that tomatoes should be viewed as a "helpful addition" rather than an alternative to sun cream.

The study was both small and short, and the team are now looking at carrying out fresh research into the benefits of lycopene for the skin.

Dr Colin Holden of the British Association of Dermatologists said: "While the protection offered by lycopene is low, this research suggests that a diet containing high levels of antioxidant rich tomatoes could provide an extra tool in sun protection".

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JNCI Journal of the National Cancer Institute 2003 95(21):1563-1565; doi:10.1093/jnci/djg112
© 2003 Oxford University Press
EDITORIAL
Tomatoes or Lycopene Versus Prostate Cancer: Is Evolution Anti-Reductionist?
Peter H. Gann, Frederick Khachik

Affiliations of authors: Department of Preventive Medicine, and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL (PHG); Department of Chemistry and Biochemistry, Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park (FK).

Correspondence to: Peter H. Gann, MD, ScD, Department of Preventive Medicine, and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, 680 N. Lakeshore Dr., Suite 1102, Chicago, IL 60611-4402 (e-mail: pgann@northwestern.edu).

The first 150 words of the full text of this article appear below.

Occasionally, but not often, positive things happen in the field of cancer prevention science to popular, good-tasting foods. Cruciferous vegetables have been the subject of intense study, but these foods might be―to modify the expression―an easy pill but a hard food for the public to swallow. By contrast, tomatoes (scientifically classified as a fruit) have overcome their earlier reputation as an inedible and possibly toxic food to become one of the most heavily consumed fruits or vegetables in the Western diet―mostly in the form of pizza, salsa, chili, pasta sauce, and ketchup. Americans consume an average of 91 pounds of tomatoes per capita per year, second only to potatoes among all fruits and vegetables.

This issue of the Journal brings good news to tomato eaters. Boileau et al. (1) report, in a well-controlled study using the N-methyl-N-nitrosourea (NMU)-androgen rat carcinogenesis model, that a diet containing . . .

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