Showing posts with label Scientists. Show all posts
Showing posts with label Scientists. Show all posts

Experts suggest low-calorie diet for longer life

Experts suggest low-calorie diet for longer lifeLONDON: The dinner table during the second half of your life should look and taste a lot like that of the first half: a well-balanced plate with lots of fruits and vegetables, healthy grains and low-fat dairy products.

For seniors, who may have limited energy and resources, it's all too easy to fall into the trap of eating processed foods and frozen dinners loaded with salt and additives.

“The message doesn't change,” said Jane Doroff, director of senior nutrition at the Council on Aging. “Stay away from as much processed food as you can and utilize your farmers market, buying produce from them rather than just opening a can.”

According to the Tufts University's Modified MyPyramid for Older Adults, seniors need fewer calories, but they still require a high level of nutrients from whole grains, protein and brightly colored veggies and fruit, along with adequate water. But because appetite and thirst diminishes with age, seniors often forget to eat and drink on a regular basis throughout the day. That can lead to weight loss and infections, and exacerbate chronic conditions such as heart disease and diabetes.

“The biggest problem we see is dehydration,” said Genevieve Ladha, who provides meals for seniors in their homes as the owner of Sonoma Homecare. “Because their thirst diminishes, they're not interested ... But you have to drink your water. It's a chore, but a really important one.”

To help boost water intake, Ladha suggests purchasing a Brita water filter, available at Safeway and other stores. The pitcher holds six glasses of water and is easy for seniors to lift.

“You can make water taste better by being filtered,” she said. “You have to help them remember or give them a benefit.”

Ladha, who is a certified senior advisor, or CSA, provides nutrition advice for seniors through a series of “Food After 50” workshops held at various senior living complexes throughout Sonoma County.

Her clients also enjoy the boosted flavor and smooth texture of hummus and carrots, caramelized roasted vegetables and whole-grain breads from Alvarado Street Bakery, which can be toasted for breakfast. Instead of white rice, Ladham suggests that seniors choose corn tortillas and whole-grain tortillas as the starch component of their meal.

While it's easy to slice carrots, colorful vegetables such as squash and pumpkin can be unwieldy for seniors to chop. Instead, Ladma recommends buying frozen squash from the grocery store, then mixing it with black beans and sauteed spinach for a nutritious meal.

If you use canned beans, however, she suggests rinsing the beans several times to remove the excess salt.

For clients who have high cholesterol, she likes to cook with two fresh eggs — but only one yolk — for a simple frittata breakfast or lunch. Another high-protein breakfast is yogurt mixed with a small amount of fruit.

“A quarter cup of yogurt, with berries, is manageable,” she said. “We use the Fage Greek yogurt, and it has a ton of protein.”

As part of her “Food After 50” workshop, Ladha takes seniors to local farmers markets to help steer them toward vibrantly colored foods such as sweet potatoes and blueberries, along with other fresh produce.

“They go to the farmers market and pick up radishes and greens,” she said. “And they like the crunch of Romaine lettuce.”

Ladha finds that her senior clients are particularly fond of her Caesar salad because she makes it with a fresh, lemon-anchovy dressing.

One of the tips for stimulating a senior's appetite is to have them suck on a lemon drop or bite into a lemon before eating, to wake up their taste buds.

“It's a refresher, and it cleanses the palate,” Doroff said. “Their taste acuity does diminish, because their taste buds slough off.”

At the Council on Aging, a nonprofit organization serving 900 meals to Sonoma County seniors each day, almost everything is made from scratch, which enables the kitchen to keep the sodium and fat content in check.

Sharon Spratling, senior-meal program dietician for the Council on Aging, plans all the menus according to American Heart Association guidelines for low-fat and low-salt meals. She must include sources of vitamin C, calcium, fiber and protein in each meal.

Getting enough protein can be especially challenging for seniors who are on a tight budget or have difficulty chewing their food, but experts view it as a key component of a healthy diet.

“Research shows that boosting your protein intake can help retain your lean muscle mass, even when you're sedentary,” Spratling said. “Lean meat, dairy, eggs and beans are all wonderful.”

While tofu is still a hard sell among older seniors, it can provide an excellent source of protein for younger seniors more open to new foods, Spratling said.

The Council on Aging sends out nutrition tips with their daily menus and in their monthly newspaper that encompass everything from farmers market updates to ideas for easy entrees for one. The council also recommends that seniors try to integrate some physical activity as part of their daily regime. That viewpoint, however, is not always met with enthusiasm.

“We were on a roll about growing container gardens right off your patio as a good physical activity,” Doroff said. “Then we got a comment from an 88-year-old, who said, ‘That's enough with the health. I'm 88 years old and I'm going to do what I want.'”

Scientists uncover 95 genes linked to high cholesterol

Scientists uncover 95 genes linked to high cholesterol LONDON: Scientists have cracked the genetic secrets of high cholesterol, paving the way for new drugs to beat heart disease.

Britain's biggest killer, heart disease affects 2.5million people and claims more than 250 lives each day.

The amount of artery-clogging cholesterol and other fats in the blood greatly affects the odds of heart attacks and other problems, but until now, little was known about the genes that control their levels.

More than 100 researchers from 17 countries, including the UK, studied the DNA of more than 100,000 people of European ancestry.

This flagged up 95 genetic changes linked to blood fats, or lipids, and heart disease, the journal Nature reports.

Further experiments showed that many of the genes also contribute to heart problems in other ethnic groups from around the world.

Working out exactly how these genes raise or lower cholesterol and other harmful fats could lead to new drugs that could benefit millions.

Although statins are widely used to lower cholesterol, side-effects lead to many stopping taking them, and some doctors say that while the drugs benefit men, there is scant evidence they ward off heart disease in women.

Researcher Dr Christopher O'Donnell, of the National Heart, Lung and Blood Institute in the US, said: 'The new findings point us to specific genetic signposts that allow us to understand why many people from all walks of life have abnormal levels of cholesterol and other blood lipids that lead to heart disease.

'What's really exciting about this work is that we are moving from discovery to understanding brand new information about how genes alter the lipids that lead to heart disease.'

Francis Collins, one of the world's leading geneticists, said: 'Genetic studies that survey a wide variety of human populations are a powerful tool for identifying hereditary factors in health and disease.

'These results help refine our course for preventing and treating heart disease, a health problem that affects millions.'

Professor Peter Weissberg, of the British Heart Foundation, said that although much more work was needed to understand what the genes do and how they work together, such research is crucial in beating heart disease.

He added: 'Although this is just the first step down a long road, the good news is that the more we understand about cholesterol regulation, the more likely it is that new drugs will be developed to prevent heart disease.'In Britain, there are around 230,000 heart attacks a year - the equivalent of one every two minutes. Around a third are fatal.

Statins are prescribed to six million Britons judged to be significant risk of a heart attack or stroke, but there have been calls for everyone over the age of 50 to receive them.

It is argued that wider access could save hundreds of thousands of lives while also saving the NHS billions a year.
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