Welcome to the Quality Counts. For those health conscious consumers and medical professionals that are looking to purchase nutritional supplements, vitamins, herbs, learning about medications, losing weight, health food, low carbs, high protein nutrition, and exercise, you have come to the right place. Quality Counts serves both the medical practitioner and consumer interested in nutritional therapy and alternative medicine.

Home > Anti-aging Research > Protein

Protein

Related Topics:

• carbohydrates / fatty acids / weight loss / energy drinks / Atkin's Diet / Zone Diet

General Information:

• Protein -  Harvard School of Public Health
• Calcium & Milk: Nutrition Source - Harvard School of Public Health - "Avoid too much protein. Getting too much protein can leach calcium from your bones. As your body digests protein, it releases acids into the bloodstream, which the body neutralizes by drawing calcium from the bones. Animal protein seems to cause more of this calcium leaching than vegetable protein does"
• Carbohydrates: Nutrition Source - Harvard School of Public Health - "Protein intake should be kept at moderate amounts (about 8 grams per day for every 20 pounds of body weight) and should be mainly vegetable protein"
• Dietary Protein Intake Differences Based on Activity Levels - Medscape, 3/6/01 - "Research clearly indicates that protein needs for athletes are greater than the recommended 0.8 grams per kilogram of body weight recommended for sedentary people ... Research supports a range in protein needs from 1.2 to 1.4 grams of protein per kilogram body weight for endurance athletes such as marathoners ... Excess protein intake is associated with dehydration, and may be related to excessive urinary calcium losses ... an impairment of kidney function has been associated with excessive protein intake" - 1 kilogram = 2.2 pounds, 154 pounds is 70 kilograms.  So for an obese 154 pound marathoner, 1.4 x 70 = 98 grams of protein maximum.  For a sedentary 154 pound person, .8 x 70 = 56 grams.

News & Research:

• Magnesium: The Multi-Purpose Mineral - Think Muscle Newsletter - "It is important to note that increasing dietary protein intake may increase magnesium requirements because high protein intake may decrease magnesium retention"
• Optimal protein intake in the elderly - Clin Nutr. 2008 Sep 24 - "It appears that an intake of 1.5gprotein/kg/day, or about 15-20% of total caloric intake, is a reasonable target for elderly individuals wishing to optimize protein intake in terms of health and function"
• High protein breakfast could aid weight loss - Nutra USA, 9/3/08
• Scientists find 'proof' for high protein diets - Nutra USA, 9/7/06
• Protein + Exercise May Promote Weight Loss - WebMD, 8/29/05 - "obese women who exercised regularly and ate a reduced-calorie diet high in protein lost more fat and less muscle than those who ate a similar diet high in carbohydrates. Both diets contained the same number of total calories and percentage of calories from fat"
• The Protein Solution - washingtonpost.com, 7/19/05
• Diet Study: Protein May Help Tame Appetite - WebMD, 7/13/05
• Low-Carb Diets: More Protein May Not Help - WebMD, 4/15/05
• High protein promotes bone health - Nutra USA, 4/5/04
• Improved Glucose Response with High-protein Diet in Individuals with Type 2 Diabetes - Doctor's Guide, 10/16/03 - "either a control diet designed according to the recommendations of the American Diabetes Association (protein:carbohydrate:fat, 15:55:30) or a high-protein diet (30:40:30) for a period of 5 weeks ... fasting glucose concentration was consistently lower after the high-protein diet, with no significant change in body weight. The mean 24-hour integrated glucose area responses (with fasting glucose concentration as baseline) were 34.1 ± 7.2 mmol x h/L and 21.0 ± 4.2 mmol x h/L after the control and high-protein diets, respectively, revealing a 40% decrease with the high-protein diet"
• High-Protein Diet Helpful in Type 2 Diabetes - Medscape, 10/6/03 - "The ratio of protein to carbohydrate to fat was 30:40:30 in the high-protein diet and 15:55:30 in the control diet ... there was a 40% decrease in the mean 24-hour integrated glucose area response after the high-protein diet. Patients on the high-protein diet also fared better in terms of decrease in glycated hemoglobin ... longer-term studies are necessary to determine the total magnitude of response, possible adverse effects, and the long-term acceptability of the diet"
• High Protein Diets More Effective At Maintaining Weight Loss - Doctor's Guide, 6/4/03 - "Despite no differences in attitudes to eating, a protein intake of 18% as energy versus 15% as energy resulted in improved weight maintenance, as well as improved fat distribution based on body waist circumference, and improved substrate oxidation and satiety"
• Scientific Evidence Lacking on High-Protein, Low-Carbohydrate Diets - WebMD, 4/8/03
• Whey Better Protein? - Dr. Weil, 3/19/03
• High-Protein Diets Can Hurt Kidneys - WebMD, 3/17/03
• Interaction of Dietary Calcium and Protein in Bone Health in Humans - J. Nutr. 133:852S-854S, 3/03 - "Protein has both positive and negative effects on calcium balance, and the net effect of dietary protein on bone mass and fracture risk may be dependent on the dietary calcium intake. In addition to providing substrate for bone matrix, dietary protein stimulates the production of insulin-like growth factor-1 (IGF-1), a factor that promotes osteoblast-mediated bone formation. Protein also increases urinary calcium losses, by several proposed mechanisms. Increasing calcium intake may offset the negative impact of dietary protein on urinary calcium losses, allowing the favorable effect of protein on the IGF-1 axis to dominate"
• Protein Diet May Prompt Weight Loss - WebMD, 2/7/03 - "The study was funded by beef producers and Kraft Foods, which makes dairy products, as well as the USDA and Illinois Council on Food and Agricultural Research ... "However, what concerns me is that in this study, they provided all the food for four weeks so they could make sure the participants that were getting more protein got very lean meat. They also received intensive counseling for the next six weeks ... and they still didn't have as good cholesterol reductions as those eating what is a typical diet," she tells WebMD. "If you tell someone to eat seven servings of beef a week, I doubt they will be as careful in choosing the leanest cuts of beef, and as a result, they may consume even more saturated fat and dietary cholesterol. What's more, if I was counseling someone to eat more protein to get leucine, I would stress baked or broiled fish, nonfat dairy products, and legumes.""
• Vegetarians: Pondering Protein? - Dr. Weil, 12/11/02
• Low-Carbohydrate, High-Protein Diets: Are They Safe? - New Hope Natural Media, 12/5/02 - "Low-carbohydrate, high-protein diets are known to suppress the appetite and to curb feelings of hunger, which is why many people lose weight on these types of diets. However, consuming these diets can result in the depletion of minerals such as potassium and magnesium, which are needed to maintain a normal heart rhythm. This mineral-losing effect may be compounded when the daily calorie intake is restricted"
• American Heart Association Statement on High-Protein, Low-Carbohydrate Diet Study Presented at Scientific Sessions - AHA, 11/19/02
• Experts ping-pong on protein advice - MSNBC, 10/22/02 - "Now protein can range from 10 percent to 35 percent of daily intake. At the annual meeting of the American Dietetic Association this week, nutritionists basically admitted that they really don’t know how much protein Americans need ... Studies have shown that you need to get at least 76 grams of protein, so that means you have to go to the upper ranges of the protein recommendations for a 1,200 calorie diet"
• High Protein Diet Helps Control Blood Glucose in Untreated Type 2 Diabetics - Doctor's Guide, 9/5/02
• Low-Carbohydrate, High-Protein Diets Increase Risk Of Kidney Stones And May Raise Bone Loss Risk - Doctor's Guide, 8/1/02 - "acid excretion - a marker for the acid load in the blood - increased as much as 90 percent while subjects were on diets that severely restricted carbohydrates. Levels of urinary citrate, which inhibits kidney stones, fell by almost 25 percent in the group during the six-week study ... People may lose weight on this diet, but this study shows that this is not a healthy way to lose weight ... there was an increased risk of developing kidney stones and a possible increase in the risk of bone loss"
• High-Protein Diets Cause Dehydration - WebMD, 4/22/02
• Increased Protein And Reduced Fat Has No Significant Effect On Weight Loss Among Type 2 Diabetics - Doctor's Guide, 4/11/02
• Aging Bone Mineral Density Better With High Protein Diet Plus Extra Calcium, Vitamin D - Doctor's Guide, 4/1/02
• High-Protein Diet Could Repair Bone Loss - WebMD, 3/25/02 - "The supplement group -- particularly those who ate a diet high in protein -- had significantly better bone mass density -- an accurate measure of bone loss. Those who took the placebo, however, had less calcium absorbed into their bloodstream when they consumed more protein"
• High-Protein Beats High-Carbohydrate for Weight Loss in Low-Fat Diets - Doctor's Guide, 2/26/02 - "Measurements taken after a 10 hour fast and at 2.5-hour post breakfast, lunch and dinner showed that postprandial thermogenesis averaged about twofold higher on the high-protein against the high-carbohydrate diet ... Nitrogen balance on the high protein diet was found to be significantly greater than the high-carbohydrate diet"
• Mother's Diet During Pregnancy May Influence Child's Blood Pressure Later In Life - Intelihealth, 1/17/02 - "Pregnant women who consume a diet rich in animal protein and low in carbohydrates may be more likely to have children with elevated blood pressure later in life"
• Health Experts Advise Against High-Protein Diets - WebMD, 10/8/01
• Prone to Kidney Stones? Watch What You Eat - WebMD, 7/20/01 - "On average, the men with a history of kidney stones developed higher levels of oxalate in their urine while on the high protein diet compared with the medium protein diet"
• Many Parents Are Confused About What to Feed Growing Athletes - WebMD, 7/6/01 - "The survey of parents of 6- to 12-year-old athletes, conducted by the American Dietetic Association's sports group, SCAN (Sports, Cardiovascular and Wellness Nutritionists) found that 60% said athletic kids need lots of protein to increase muscle size. However, such kids actually need a diet rich in breads, cereals, pasta, and other carbohydrates because carbs are the body's main energy source for exercise and the major fuel for the brain ... "Despite the popular myth, extra protein doesn't mean bigger muscles because muscle size is dependent on calories, physical maturity, genetics, and training," she tells WebMD. The athletic kid's diet ratio should be 50-55% carbohydrate, 10-15% protein and 30% fat"
• Pregnant Women Need a Balanced Diet That's 'Just Right' - WebMD, 6/1/01 - "Women given supplements containing large amounts of protein actually had babies that were smaller on average than women who did not take the supplements. That led the government, which sets the Recommended Daily Allowance (RDA), to lower its recommended level of daily protein for pregnant women from 74 grams per day to 60 grams"
• WebMD Goes One-on-One With the 'Revolutionary' Robert C. Atkins, MD - WebMD, 3/23/01
• Heart Association to warn against low-carb diets - CNN, 3/20/01
• The Protein Connection - Nutrition Science News, 1/01
• Protein That Helps May Also Harm in High Amounts - WebMD, 10/2/00
• Protein Popularity: The Evidence Behind the Hype - WebMD, 4/25/00
• Too much animal protein causes osteoporosis - drmirkin.com, 1/11/00
• Atkins' Diet: Can We Have Our Turkey and Eat it Too? - CNN, 11/26/99
• Group Calls Low-Carb Diet Unhealthy - Intelihealth, 10/18/99
• Survey: Many opt for high-protein, low-carb diets - CNN, 3/5/99
• Low-Protein Diet Postpones Dialysis In Chronic Kidney Failure Patients - Doctor's Guide, 2/16/99
• The Low Down on High Protein Diets - Healthcalc, 10/13/98

Abstracts:

• Inadequate dietary protein increases hunger and desire to eat in younger and older men - J Nutr. 2007 Jun;137(6):1478-82 - "younger and older men who consume inadequate protein experience appetite changes that may promote increased food intake"
• Effect of high protein vs high carbohydrate intake on insulin sensitivity, body weight, hemoglobin A1c, and blood pressure in patients with type 2 diabetes mellitus - J Am Diet Assoc. 2005 Apr;105(4):573-80 - "Both the high-carbohydrate and high-protein groups lost weight (-2.2+/-0.9 kg, -2.5+/-1.6 kg, respectively, P <.05) and the difference between the groups was not significant ( P =.9). In the high-carbohydrate group, hemoglobin A1c decreased (from 8.2% to 6.9%, P <.03), fasting plasma glucose decreased (from 8.8 to 7.2 mmol/L, P <.02), and insulin sensitivity increased (from 12.8 to 17.2 mumol/kg/min, P <.03). No significant changes in these parameters occurred in the high-protein group, instead systolic and diastolic blood pressures decreased (-10.5+/-2.3 mm Hg, P =.003 and -18+/-9.0 mm Hg, P <.05, respectively)"
• The impact of dietary protein on calcium absorption and kinetic measures of bone turnover in women - J Clin Endocrinol Metab. 2004 Nov 16 - "The high protein diet caused a significant reduction in the fraction of urinary calcium of bone origin and a nonsignificant trend toward a reduction in the rate of bone resorption. There were no protein induced effects on net bone balance. These data directly demonstrate that, at least in the short-term, high protein diets are not detrimental to bone"
• High-protein, low-fat diets are effective for weight loss and favorably alter biomarkers in healthy adults - J Nutr. 2004 Mar;134(3):586-91 - "low-fat, energy-restricted diets of varying protein content (15 or 30% energy) promoted healthful weight loss, but diet satisfaction was greater in those consuming the high-protein diet"
• Dietary protein intake and urinary excretion of calcium: a cross-sectional study in a healthy Japanese population - Am J Clin Nutr 1998 Mar;67(3):438-444 - "Our findings suggest that excess protein, especially that rich in sulfur-containing amino acids, in habitual diets may augment calcium excretion in the urine, at least in the elderly."

Related Searches:

• Doctor's Guide search of protein
• Doctor's Guide (2) search of protein
• Intelihealth search of protein
• Life Extension Foundation search
• Medline search of protein
• Medscape search of protein
• The Natural Pharmacist search of protein
• Nutrition Science News search
• WebMD search of protein

70501