An apple a day: the myths, misconceptions, and truths about by Joseph Schwarcz
By Joseph Schwarcz
Consume salmon. It’s filled with sturdy omega-3 fat. Don’t devour salmon. It’s filled with PCBs and mercury. consume extra greens. They’re packed with solid antioxidants. Don’t consume extra vegetables. The insecticides provide you with melanoma. omit your dinner jacket and wear your lab coat: you need to be a dietary scientist nowadays ahead of you take a seat to eat—which is why we'd like Dr. Joe Schwarcz, the professional in connecting chemistry to way of life. In An Apple an afternoon, he’s taken his thorough wisdom of meals chemistry, utilized it to today’s most sensible foodstuff fears, tendencies, and questions, and leavened it together with his trademark lighthearted strategy. the result's either an enjoyable revelation of the miracles of technology occurring in bodies each time we chew right into a morsel of nutrition, and a telling exploration of the myths, claims, and misconceptions surrounding our obsession with diets, nutrients, and weight.Looking first at how meals impacts our future health, Dr. Joe examines what’s in tomatoes, soy, and broccoli that could hold us fit and the way the masses of compounds in one nutrition react after they hit bodies. Then he investigates how we manage our foodstuff offer, delving into the technological know-how of nutrition ingredients and what merits we'd become aware of from including micro organism to yes meals. He clears up the confusion approximately contaminants, interpreting every little thing from pesticide residues, remnants of antibiotics, the feared trans fat, and chemical compounds that could leach from cookware. And he's taking a studied examine the technology of energy and weighs in on renowned diets.
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Most ulcers are caused by infection with the Helicobacter pylori bacterium. Well, it seems that the procyanidins may also prevent these bacteria from infecting the stomach. Researchers in China chose a population with a high rate of Helicobacter infection, and in a placebo-controlled, double-blind study, gave ninety-seven people 500 milliliters (just over two cups) of cranberry juice for ninety days, while ninety-two others got a placebo. They found that H. pylori was eradicated in fourteen people in the cranberry group but in only five in the placebo group.
We can’t live without oxygen, of course, but there is a cost to be paid for living with it: illness and eventual death! About 2 to 3 percent of the oxygen consumed by our cells is converted into free radicals that are so reactive, they can rip other molecules apart. When the victims are proteins, fats, nucleic acids, or other essential biomolecules, the result can be heart disease, cancer, or dementia. Even plain old aging has been linked to cumulative free-radical damage. Since antioxidants can mop up excess free radicals, they obviously merit serious scientific investigation.
There may be even more to cranberries than their effect on bacteria. At the University of Western Ontario, twenty-four female mice were fed a normal diet for twelve weeks, twenty-four others drank cranberry juice instead of water, and another twenty-four had their diet supplemented with cranberry solids (the stuff left after the juice is squeezed) to make up 1 percent of their chow. Then one week later, one million human breast tumor cells were injected into the animals’ mammary glands. These were a special breed of mice, genetically engineered to have a compromised immune system, so they all developed cancer.