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Chocolate, tea, coffee and zinc could protect us against oxidative stress and make us more healthy

Scientists have shown through a new study that zinc combined with chocolate, tea and coffee have the potential of reducing oxidative stress and make us healthy.

According to researchers at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and colleagues from U.S. zinc can activate an organic molecule that helps protect us against oxidative stress. Zinc is a trace mineral we need in order to remain healthy. Scientists discovered that zinc can protect against the superoxide responsible for oxidative stress when taken together with a component found in foodstuffs such as wine, coffee, tea and chocolate. This component is a hydroquinone group found in polyphenols, in other words the plant substances responsible for smell and taste.

Zinc activates the hydroquinone groups, producing natural protection against superoxide, a by-product of human cell respiration which damages the body’s own biomolecules, for example proteins or lipids, as well as the human genome. Superoxide is thought to have a role to play in the ageing process and a number of illnesses such as inflammation, cancer or neurodegenerative diseases.

Hydroquinone alone is not capable of breaking down superoxide. If zinc and hydroquinone combine, however, a metal complex is created which imitates a superoxide dismutase enzyme (SOD). These enzymes protect the body from the degradation processes caused by oxidation and have an antioxidative effect. In this way, the superoxide can be metabolised and damage to the organism prevented; oxidative stress is avoided.

For the first time, the function of this enzyme has been copied without reverting to redox-active transition metals such as manganese, iron, copper or nickel. Whilst the metals could also have an antioxidative effect, any positive effects are quickly outweighed by the fact that if too much is taken they can even cause oxidative stress to increase.

Zinc is much less toxic than the transition metals mentioned above, making it possible for new medication or supplements to be created with considerably fewer side-effects. It would also be plausible to add zinc to food which contains hydroquinone naturally to boost the consumer’s health. ‘It is certainly possible that wine, coffee, tea or chocolate may well become be available in future with added zinc. However, any alcohol content whatsoever would destroy the positive effects of this combination,’ emphasises Ivana Ivanovi-Burmazovi.

James Anderson

Having developed startups for the better part of the last decade, James now covers healthcare stories with a business slant. Email: james@askhealthnews.com

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