san diego
health news
San Diego health information

San Diego Health news

for ...
For
importance of vitamin c

New Research on the Benefits of Vitamin C

By SDHealth.com writers. Not doctor reviewed. Read disclaimer.

Vitamin C is well known for its ability to control infections, neutralize damaging cellular free-radicals and support brain health and collagen production for healthy skin, blood vessels, bones and mouth. But three articles in medical literature caught our attention recently. They featured some unexpected benefits of Vitamin C.

Toxins
The first one was about the protective effects of Vitamin C against pesticides and other toxins. (This is important because we dump 2.5 million tons of pesticides into our environment every year.)

The discussion of Vitamin C and pesticides was published in 2007 and 2008 in the Journal Toxicology and Industrial Health. It clearly shows the protective effect of large amounts of Vitamin C against common environmental toxins.

Cholesterol
The second article appeared in the February 2008 edition of Molecular and Cellular Biochemistry. It demonstrated another benefit of Vitamin C in people with elevated cholesterol. You see, Vitamin C in the liver binds excess cholesterol and drains it through the bile ducts into the intestines. Fiber in the intestines soaks up the cholesterol and carries it out of the body. If our diet does not have enough fiber to eliminate the cholesterol we will likely reabsorb it. In fact, most of the cholesterol in our bloodstream has been excreted and reabsorbed numerous times.

Vitamin C binds cholesterol and takes it out of the liver. Vitamin C also protects the lining of the blood vessel -- making it like a non-stick surface to sticky LDL cholesterol. Instead of damaging the blood vessels, oxidized LDL slides off the walls of your arteries and is carried back to the liver by HDL cholesterol.

Blood pressure
The third article came from the October 2008 Journal of Clinical and Experimental Hypertension. It clearly showed the reduction of high blood pressure from large reservoirs of Vitamin C. Antioxidants (especially Vitamin C) reduce poisons in the tissues called aldehydes -- think of the poison formaldehyde as a good example. Poisons drive up blood pressure; Vitamin C drives down poisons and can result in blood pressure reduction.

Foods rich in vitamin C include raw, uncooked citrus fruits and juices, melons, berries, broccoli, cauliflower, bell peppers, leafy greens and tomatoes. Cooking or storing fresh foods for an extended period can reduce their vitamin C content. In order to preserve the vitamin C (and other water-soluble vitamins, like vitamin B) in foods, follow these tips from the University of Kentucky Cooperative Extension Service:

  • store produce whole and in your refrigerator's crisper drawer.
  • prepare them as close to mealtime as possible.
  • only rinse (rather than soaking) to clean them.
  • serve them raw or grill, bake or steam (using a minimum of water) just 'till done. Avoid high temperatures and over-cooking.

Health is built one habit at a time. The more we learn and live health and wellness, the healthier we become. If you eat nutritiously, science firmly supports that you will be improving the quality of your life.

buy pureformulas vitaminspureformulas discounts

Recent San Diego health posts:
Join the conversations:
From the San Diego Research Desk...
rose hips vitamin CVitamin C Lowers Marker for Heart Disease

Berkeley, California: Vitamin C supplements can help lower C-reactive protein (CRP) levels, a marker of inflammation that has been shown to be an accurate predictor of heart disease and diabetes, a study at the University of California, Berkeley showed.

Researchers found that Vitamin C lowered CRP levels in healthy, non-smoking adults with elevated CRP levels compared to those who took a placebo. Those who did not start with high CRP levels did not experience any changes.

"This finding of an effect of Vitamin C is important because it shows in a carefully conducted, randomized, controlled trial that for people with moderately elevated levels of inflammation, Vitamin C may be able to reduce CRP as much as statins [cholesterol-lowering drugs] have done in other studies," said Gladys Block, US Berkeley professor emeritus of epidemiology and public health nutrition.

PS: While plants are generally a good source of vitamin C, the amount in foods of plant origin depends on the precise variety of the plant, soil condition, climate where it grew, length of time since it was picked, storage conditions, and method of preparation.1

1. "The vitamin and mineral content is stable." Danish Veterinary and Food Administration.
http://www.uk.foedevarestyrelsen.dk/Nutrition/Vitamin_mineral_content_is_stable/forside.htm.
Wikipedia.org retrieved this on 2010-02-26.

Tips for Healthy Aging...
effects of exercise on healthy aging
Activity may give a 70-year-old the brain connectivity of a 30-year-old

Several key studies have proven that physical exercise actually protects against cognitive (mental) decline and improves brain function. The human brain is a powerful, thinking organ that is able to continually adapt and rewire itself. Even in old age it can grow new neurons. In fact, most age-related losses in memory and motor skills result from inactivity and lack of mental exercise and stimulation. In simple words, when it comes to your brain: use it or lose it.

A wide variety of studies support this view. Simple aerobic exercise improves episodic memory by about 20%, states a University of Illinois study. And that can be as simple as walking 45 minutes a day three times a week. This study showed that exercise stimulates the production of new synapses, the connections that help aid superior intelligence. Study author, Art Kramer, says that a year of exercise can give a 70-year-old the brain connectivity of a 30-year-old, improving memory, planning, dealing with ambiguity and multitasking." Fitness training helps change the molecular and cellular building blocks that improve many cognitive skills," he says.

Confirming the value of exercise
In the late 1990s, researchers at the Laboratory of Genetics at the Salk Institute in San Diego discovered that human and animal brains produce new brain cells as a direct result of exercise.

Walking is especially good for your brain because it increases blood circulation and the oxygen and glucose that reach your brain. As you walk, you effectively oxygenate your brain. Maybe that is why so many people feel their mind is clearer and they can think better when walking.

In addition, movement and exercise increase breathing and heart rate, so more blood flows to the brain, enhancing energy production and waste removal. In fact, several studies have shown that in response to exercise, cerebral blood vessels can grow even in middle-aged, sedentary people.

Dramatic improvement in cognitive decline
Several other studies confirm the benefits of exercise. Studies of senior citizens found that those who walk regularly showed significant improvement in memory skills, compared to sedentary elderly people. Walking also improved their learning ability, concentration and abstract reasoning. Stroke risk was also cut by 57% in people who walked as little as 20 minutes a day.

A study of 6,000 women during an eight-year period at University of California at San Francisco showed that women who walked regularly were less likely to experience age-related memory loss and other declines in mental function.

"In the higher-energy groups, we saw much less cognitive decline," says Kristine Yaffe, M.D." The exciting thing is that this study showed that even a little exercise is good, but more is better. Exercise is something that all of us can do that could have huge implications in preventing cognitive decline."

Today's World Health News...
L.A. Times - Health
L.A. Times - Health
Headlines from Los Angeles Times

07/25/2014 04:30 PM
'Peaceful warrior' Lisa Smith-Batchen conquers limits on 584-mile run
The diarrhea wouldn't stop. The hallucinations were just beginning. The blisters on her feet formed as she ran. In heat that topped 120 degrees, Lisa Smith-Batchen's body began breaking down.
07/25/2014 04:00 PM
Hazards of the nightly sleep-wake-repeat pattern are studied
Sometimes science quantifies something many of us know to be true. So listen up, new parents: Waking up repeatedly to care for a little one isn't good for your moods and your ability to attend to tasks, and it's just as bad as not sleeping much at all.
07/25/2014 02:30 PM
Joseph Simmons of Run-DMC raps about his fight against diabetes
Joseph Simmons, a.k.a. Rev Run, better be on Aerosmith's Christmas card list. He was part of the Run-DMC hip-hop trio, one of the most influential music acts, and its cover of "Walk This Way" became one of the biggest hits of the 1980s. Musically, the Rev took risks, and they paid off, but as a...
07/25/2014 02:05 PM
New 27.5-inch mountain bikes get high marks from cyclists
Do you remember two years ago, when this column reviewed the "29er," which had come to dominate the mountain bike world with super-fast, roll-over-anything, monster-truck 29-inch wheels that made traditional 26-inch bikes look like children's toys? Well, forget about that. Big tires still rule,...
Well
Well
Tara Parker-Pope on Health

07/31/2014 12:00 PM
A Toxic Menagerie
A conversation with Mark Siddall, the author of a new book about the ways in which animals use poisons -- sometimes against humans.
07/31/2014 07:35 AM
Feeling as if I Failed the Patient
I thought about the patient I had been treating for three years for leukemia. I would be seeing her in clinic in a few hours, and I had a bad feeling about her disease.
07/30/2014 10:00 PM
Statins May Speed Wound Healing
Statins, the widely used cholesterol-lowering drugs, may have a role in surgical wound healing, a new analysis suggests.
07/30/2014 09:01 PM
Bothered by a ‘Gummy Smile’
People bothered by a smile that shows too much of the gum line have a new option: Botox.
07/30/2014 10:50 AM
The Upside of a Wimpy Handshake
A weak handshake may be a healthier greeting than a firm one. But a fist bump may be an even healthier choice.
07/29/2014 09:01 PM
Running 5 Minutes a Day Has Long-Lasting Benefits
Even small amounts of vigorous exercise could significantly lower a person’s risk of dying prematurely, according to a large-scale new study of exercise and mortality.
07/28/2014 12:43 PM
Rustle, Tingle, Relax: The Compelling World of A.S.M.R.
Videos that evoke the tingling sensation of the "autonomous sensory meridian response" are popular on the Web, but scientists are only beginning to understand what might be involved.
07/28/2014 12:05 PM
Ask Well: Exercise and Weight Loss
Is weight loss truly greater (for the same time expended) when exercising at moderate levels (say, 60 percent of maximum capacity) versus more intense levels (85 percent of maximum capacity)?
07/28/2014 11:51 AM
Statins Tied to Lower Risk of Barrett’s Esophagus
Cholesterol-lowering statin drugs are associated with a lower risk of Barrett’s esophagus, a precancerous condition that can sometimes lead to esophageal cancer, a new study has found.
We welcome your Feedback...
 
Add new comment
Comments are moderated. Please expect a delay.
 

feedback
news@SDHealth.com

rss Subscribe to our RSS

Copyright 2014 SDHealth.com. All rights reserved.

SDHealth.com is a commercial website and is not affiliated with, or endorsed by, any government agency, university or private medical center. The information provided here is for educational purposes only and is not intended to be a substitute for professional medical advice. If you have a health condition or concern, please consult a physician or health care provider. COMPENSATION DISCLOSURE: A relationship may exist between this web site and products or services we review, recommend or promote. Please read our Terms of use | Privacy policy

advertisement