FX Excursions

FX Excursions offers the chance for once-in-a-lifetime experiences in destinations around the world.

Free Radicals And Antioxidants

Aug 1, 2009
2009 / August 2009

The enthusiasm for antioxidants began when researchers observed that people who ate diets rich in antioxidants were healthier. In the lab, experiments showed how antioxidants can protect cells from free radicals, molecules with the potential to cause extensive damage to the body’s cells.

Free radicals are formed during the metabolism of glucose and fatty acids to provide energy. They are also produced in the body by pollutants, ultraviolet light from the sun and drinking alcohol. Free radicals react with and damage many components of tissues, including cellular DNA, or genetic material. The damage, known as oxidative stress, may lead to conditions such as cataracts, cancer, heart disease and even aging, and can transform cholesterol into the type that causes fatty buildup in arteries, the major factor that leads to heart attacks.

Antioxidants in our diet can reduce the number of free radicals, prevent tissue damage, repair damage that has already been done and, quite possibly, lower the risk for cancer. Antioxidants are also thought to provide several heart protecting benefits, including reducing low-density lipoprotein (LDL or bad cholesterol). However, no one understands exactly how antioxidants work.

The list of antioxidants and their presence in food is lengthy. Vitamins C, E and B6 and beta-carotene (which the body converts into Vitamin A) are just a few. The best sources are fruits, vegetables, nuts, grains, some meats, poultry and fish. Other antioxidants include phytochemicals such as lutein and lycopene, found in green leafy vegetables and tomatoes. Flavonoid polyphenols are present in berries as well as coffee and tea. Pomegranate juice contains higher levels of polyphenols than other fruit juices and is generally safe to drink. Most studies have used a daily intake of 1.5 ounces of pomegranate juice with no side effects. Studies so far have been small, and more research is needed to fully evaluate this benefit.

Antioxidant-rich foods lose impact if stored too long. The findings of a recent study report that even if olive oil and green tea bags are stored unopened and unexposed to light and moisture, a steep drop in antioxidant activity takes place in the first six months.

There’s nothing better than garden-fresh produce — if it is eaten immediately — but if you cannot grow your own or cannot access a fresh-produce market, frozen or canned will do just fine. When shopping, plan for the amount of produce and fresh foods you can use quickly.

Since antioxidants are so beneficial to health, it seems logical that taking antioxidant supplements would ensure we meet our daily requirements. But the jury is still out on this question. Some observational studies suggest that antioxidant supplements prolong life, whereas other studies demonstrate neutral or harmful effects. There is also the danger of toxicity in taking too much of certain supplements, and possible interaction of supplements with other drugs. For example, too much vitamin E can potentially increase the blood-thinning function of Coumadin. Ask your doctor about supplements before trying them on your own.

Based on current evidence, the U.S. Preventive Services Task Force does not endorse the regular use of antioxidant supplements to prevent cancer or heart disease. The American Heart Association does not recommend using antioxidant vitamin supplements until more complete data is available and continues to recommend that people eat a variety of nutrient-rich foods daily from all basic food groups.

Despite the disappointing news about antioxidant supplements and the need for continuing medical research in their use, the original reason for enthusiasm about antioxidants is still valid. Fruits, vegetables and whole-grain products provide all the antioxidants we need and should be the central focus of our diets.

September’s column will focus on the relationship between antioxidants and specific illnesses and the current research on antioxidant supplements. For more information, visit www.nih.gov.


Fresh Is Best

A diet rich in fruits, vegetables, whole grains and nuts supplies all the antioxidants you need.

Yellow, orange and red fruits and vegetables
Carrots, sweet potatoes, cantaloupe, pumpkin and apricots contain carotenoids. Red peppers, watermelon, pink grapefruit and strawberries are rich in vitamin C and other antioxidants.

Dark green vegetables
Kale, broccoli, spinach and greens contain antioxidants, folic acid, fiber, calcium and phytochemicals.

Red and purple fruits
Pigments in berries, grapes, prunes and apples act as antioxidants. Pomegranate juice contains high levels of polyphenols. Red wine is high in flavonoids.

Tomatoes
Lycopene in tomatoes appears to lower a man’s risk of prostate cancer. Cooking tomatoes releases more lycopene.

Tea and coffee
Green and white teas are higher in flavonoids than black tea. Coffee also contains the flavonoid catechin.

Introducing

FX Excursions

FX Excursions offers the chance for once-in-a-lifetime experiences in destinations around the world.

#globility

Insta Feed
Daily
Mar 5, 2021

3 Recipes for Lent from New Orleans’ Top Chefs

The Lenten season continues through April 3. This year, New Orleans’ top chefs share some Lent-friendly recipes for at-home dining.

January/February 2021
Mar 5, 2021

Indulge in the Seductive Splendor Bora Bora

I had just taken off my sandals, stepping onto the white-sand beach for a late-morning walk to a secluded spot I heard about from a front desk clerk, when I glanced down and saw the time on my phone. It had just turned 11 a.m., which meant it was only 7 am back home, the perfect time to call and say good morning to by husband before he left for work. Not quite ready to head back to my room, I decided I’d test the WiFi signal and made the call as I continued walking toward the shoreline.

January/February 2021
Mar 4, 2021

Set Your Sights on San Antonio’s Art, Culture and Green Spaces

San Antonio celebrated 300 years of progress in May 2018. With a clear vision following that anniversary year, the Texan city set its sights firmly on 300 more. While commemorating this milestone, the city underwent a major overhaul to prepare for the next phase in its history.

Adventure Redefined: Volvo Overseas Delivery

Custom order your Volvo through the Overseas Delivery Program and receive round-trip airfare, hotel accommodations, and a personalized delivery at the Volvo Factory Delivery Experience in Gothenburg, Sweden. Your experience begins in Sweden with insurance and registration included, enabling you to drive your new Volvo throughout Scandinavia and Europe. Create the adventure of a lifetime with the program named Best Overseas Delivery four years running, and return home with the ultimate souvenir.

Daily
Mar 4, 2021

SoJo Spa Club: Tranquility with an Urban View

When you think of a relaxing spa day, mountains, rivers and view of gorgeous landscapes pop in your head; a place to get away from the hustle and bustle of any city’s booming music and honking taxis. SoJo Spa Club and Hotel gives you the relaxing feeling of being away while still staying close to the busy center of Manhattan.

eFlyer Deals
Mar 3, 2021

Mackinac Island’s Grand Hotel’s Reopening Offers

Dance the night away with Grand Hotel’s Ballroom Dance offer, available May 16–18. Dancers of all skill levels will experience a diverse range of ballroom dance styles, alongside daily breakfast and dinner, a welcome reception and complimentary golf green fees.

What To Expect When Flying: oneworld Debuts Information Portal

Though air travel slowed as airports temporarily closed and borders shuttered to stifle the spread of coronavirus, the airline industry — led by oneworld alliance member airlines — enacted enhanced protective measures to reduce risk and protect passengers.

eFlyer Lead
Mar 3, 2021

4 Travel Experiences for Women’s History Month

March marks Women’s History Month, and there are a number of ways to celebrate through travel. Here are just a few ideas to honor women in history.