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Nutrition Notes, May, 2017 from Roc Nutrition Investigator

Lots of exciting news this month. Sorry I have been so busy with cancer research that I have not been reviewing ASN issues as often.

Science: Another protein from human umbilical cord has been discovered that reverses the effects of human aging

From my own reading about a way to use free radicals kill cancer cells and cure cancer.  It turns out that both quercetin (in blueberries) and resveratrol (in supplements and red wine) turn on a gene that detoxifies many carcinogenic compounds found in our food consumption.

Six studies indicating that taking supplemental vitamin C is very beneficial for your health, esp. as you age.  (1) A 14-year Columbia University study in 2013 about vitamin C's ability to help you maintain your health in your 50s, 60s, 70s and beyond. In the Columbia University study of serum antioxidants, scientists tracked 16,000 adults for 14 years to see what difference extra supplementation made, if any. They measured actual serum levels. Researchers found that people who took supplemental vitamin C daily had a 45% lower risk of death at their age from any health-related cause.

(2) A European study of nearly 20,000 adults found that the incidence of cardiovascular problems was 60% lower among those with the highest vitamin C blood levels versus those with the lowest.

(3) A 2012 review of 29 clinical trials of vitamin C concluded that yes, indeed, vitamin C supplementation brought about reductions in both systolic and diastolic blood pressure.

(4) A 20-year Japanese study of 2,000 adults found that those with higher serum vitamin C concentration had a significantly lower risk of suffering from arterial issues in the brain.

(5)Yet another study found that daily intake of 1,000 mg of vitamin C reduced C-reactive protein (CRP), a notorious inflammation marker in the blood linked to heart issues — by an impressive 17% in just two months.

(6) Vitamin C absorption drops as you age. Studies strongly suggest that the body's ability to absorb vitamin C declines with age, particularly after 60.

New studies suggest eating salt may decrease your thirst and increase your appetite.  Increased salt consumption induces body water conservation and decreases fluid intake Also High salt intake reprioritizes osmolyte and energy metabolism for body fluid conservation The salt equation taught to doctors for more than 200 years is not hard to understand. The body relies on this essential mineral for a variety of functions, including blood pressure and the transmission of nerve impulses. Sodium levels in the blood must be carefully maintained. If you eat a lot of salt — sodium chloride — you will become thirsty and drink water, diluting your blood enough to maintain the proper concentration of sodium. Ultimately you will excrete much of the excess salt and water in urine. The theory is intuitive and simple. And it may be completely wrong. New studies of Russian cosmonauts, held in isolation to simulate space travel, show that eating more salt made them less thirsty but somehow hungrier. Subsequent experiments found that mice burned more calories when they got more salt, eating 25 percent more just to maintain their weight. The research, published recently in two dense papers in The Journal of Clinical Investigation, contradicts much of the conventional wisdom about how the body handles salt and suggests that high levels may play a role in weight loss.                       

Science 356:29 Microbes can trigger chronic disorders to dietary antigens, such as celiac disease. The results provide mechanistic proof linking viral infections in children to food sensitivities.

Activity levels should be maintained in times of high stress to prevent negative effects on sleep, well-being and affect in students.

READER’S QUESTION: Our 5 year old is short. Can you recommend any supplement or food that might enhance his height and build safely?  ROC’S ANSWER: Here are many legitimate articles I have found. (Summary: check with a doctor to consider growth hormone[see 7], give milk but not calcium or iron supplements, animal protein is good after birth) 1) Basic medical information on child’s height 2) Calcium supplementation of boys in late childhood reduced stature. Calcium supplementation of boys in late childhood advanced the age of peak height velocity and resulted in shorter adult stature in a population in whom low calcium intakes and delayed puberty are common.3) A higher intake of protein, especially animal protein, at 1 y of age was associated with a greater height, weight, and BMI in childhood up to 9 y of age. 4) However, too much protein during pregnancy may reduce child’s height.    (1.8 g · kg−1 · d−1).   5) In a study where 283 were receiving a weekly multiple micro nutrient supplement (WMM), 280 received a daily multiple micronutrient(DMM) supplement, and 288 received daily iron (DI) supplements…. There were no differences in height gain. 6) The feeding of high volumes of cow milk in late infancy is associated with faster weight and height gain than is Breast milk feeding. 7) Long-term administration of growth hormone to children with idiopathic short stature can increase adult height (about 2 inches) to a level above the predicted adult height and above the adult height of untreated historical control children. 

- Roc, Nutrition Investigator
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