Word: diets
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...role insulin plays in aging in mice is not yet known, but when mice are placed on a restricted diet, which lowers their insulin levels, they live longer...
Since beef, chicken and fish are good sources of protein and vitamins, nutritionists stress that a vegetarian diet requires vigilance, especially during the growth spurts that occur in adolescence. Strict vegans, especially menstruating girls, have to be particularly careful to get enough iron, zinc, calcium and B12. (B12 is not found in vegetables.) Yet most experts agree that the diet is eminently manageable. "It's easier to absorb and maintain the necessary nutrients if you eat a little bit of meat or fish," says Bier. But beans, tofu, peanut butter, broccoli, milk, eggs and whole grains can provide protein, iron...
...Whoppers and McNuggets? Especially for teens, say parents, vegetarianism can be a step toward establishing independence. It's also cool. A recent study by Teenage Research Unlimited found that 25% of teens say being a vegetarian is In. For girls--who constitute the vast majority of vegetarian kids--the diet can also appeal to concerns about weight...
...tricky and sometimes encourages junk-food consumption or even abstaining from eating. Jeff Siegfried, a 13-year-old vegetarian from Bellingham, Wash., says his school-cafeteria offerings are so "pathetic," he often skips lunch. For kids of ranchers, such as Carina Fisher, 17, of Bakersville, Calif., the diet can be alienating. No longer a vegetarian, Fisher recalls unwittingly insulting family friends by attending barbecues and brandings with egg sandwiches in hand...
Indeed, carnivorous parents sometimes resist the diet, often for practical reasons. Making separate meals at dinner can be chaotic. And they worry about their kids' getting proper nutrition. "But kids--who don't tend to be great nutritionists--need to watch what they're eating regardless," says Bier. "And, keep in mind, most Americans need to be eating more fruits and vegetables anyway. It's good stuff...