In a counter-intuitive article in the New York Times, which quotes researchers in Germany and Boston, exercise and antioxidants don’t mix. “If you exercise to improve your metabolism and prevent diabetes, you may want to avoid antioxidants like vitamins C and E.”

Dr. Michael Ristow, a nutritionist at the University of Jena in Germany, said, “If you exercise to promote health, you shouldn’t take large amounts of antioxidants. … antioxidants in general cause certain effects that inhibit otherwise positive effects of exercise, dieting and other interventions.”

It seems that exercise encourages muscle cells to metabolize glucose by combining carbon atoms with oxygen. In the process, highly reactive oxygen molecules are released which then attack various parts of the body damaging the tissues.

The Jena team found that in the group taking antioxidant vitamins, like vitamins C and E, there was no improvement in insulin sensitivity and almost no activation of the body’s natural defence mechanism against oxidative damage.

Once again, what we thought was done and dusted has been called into question by more research.

However, the advice does not apply to fruits and vegetables, Ristow said, even though they are high in antioxidants, it may be that other substances they contain outweigh any negative effect.

Andrew Shao of the Council for Responsible Nutrition, a trade association of dietary supplement makers, said, “I wouldn’t change recommendations for anyone based on one study. This is one small piece of the puzzle.”

The amount of oxidative damage increases with age, and according to one theory of aging it is a major cause of the body’s decline.

The findings appear in this week’s issue of The Proceedings of the National Academy of Sciences.

John Evans

You’ve probably noticed the mountain of health and beauty products on the market containing Aloe Vera and wondered why cosmetics manufacturers make so many fantastic claims about its benefits.

Aloe Vera is part of the lily family. It’s a spiky looking plant that oozes a thick gel when the leaves are split. This gel was used in Ancient Egypt to heal and rejuvenate the body and is said to have a hundred active ingredients, three quarters of which contain compounds with healing properties. Scientists have confirmed it contains anti-inflammatory agents, amino acids and a variety of beneficial minerals.

Consequently, Aloe Vera based products are often recommended to soothe and abate painful skin conditions, including acne and psoriasis, to moisturise dry, or even burnt, skin. Aloe Vera also has additional antibacterial and antifungal properties, which make it ideal to apply to the skin after shaving or waxing.

What’s more, it is often suggested Aloe Vera juice or gel can be taken internally, as a beauty supplement that works from the inside out.

Manufacturers of Aloe Vera juice and gel products claim that it is a natural detoxifier, cleansing the blood and improving circulation, which contributes to healthy, glowing skin.

As with many herbal or plant based products, however, there are guidelines that should be followed with regard to dosage amounts and frequency and there are some side effects and contraindications that are worth noting to ensure you’re not putting yourself at risk.

If you don’t fancy taking Aloe Vera internally, why not try one of the pure gel type products available for topical application. The results should be pleasing and will certainly give some of the chemical infused moisturisation products on the shelves a run for their money.

The latest health panacea and longevity aid is a very unlikely one — “heavy” water.

Heavy water (HW) occurs when the hydrogen atom — the “H” in H2O — is an isotope of normal hydrogen called deuterium. Deuterium weighs twice as much, hence the “heavy” tag.

Apart from the odd chemistry lesson at school, most people will know about heavy water from the film Heroes of Telemark, a wartime adventure in which Richard Widmark leads a British raid on Telemark in Denmark. The aim is to destroy a heavy water plant which threatens London with an atom bomb attack.

According to scientists the consumption of HW adds 10 percent to the lifespan of earthworms and 30 percent to other species. Humans are thought to be in for an extra 10 years of life if fed HW products, which can include bread, cakes or even pork from pigs fed with the water.

However, a close reading of the reports indicates that HW works by strengthening cells against free radical damage. Regular readers of Sideways Health will know that we are already well armed with a great many antioxidants in highly coloured fruit and vegetables that perform the same task.

It’s not clear whether heavy water adds to that effect or, to use a pun, will be swallowed up in it. In other words, will HW be wasted on folk who already consume 6000 ORAC of antioxidants a day?

We will keep an eye on this story to see how it develops.

Research shows that drinking a glass of cherry juice a day offers the same health benefits as 23 portions of fruit and vegetables.

The catch is that it only applies to American Montmorency tart cherries.

British and European varieties only seem to contain about 20 percent of the antioxidant levels of the U.S. fruit — however, the juice can be bought in the UK in health food stores, under the name of CherryActive.

The research by Dr Robert Verkerk, compared the Oxygen Radical Absorbance Capacity (ORAC) of 25ml of diluted cherry juice concentrate with various fruits and vegetables. The result was an overwhelming thumbs-up for the cherries.

A leading British nutritionist, Patrick Holford said, “A recent BBC2 Horizon documentary showed the longest-living people in the world all achieve a very high intake of antioxidants, measured as over 6,000 ORAC units a day.”

One glass of Montmorency cherry juice contains 8,260 units.

Life really is a bowl of cherries, it seems.