Expert opinion
Video: Perspective on Personalized Nutrition from Lucy Jones, RD
24 October 2018
Internationally-recognized registered dietitian, Lucy Jones, provides her perspective on the fast-growing segment of personalized nutrition.
23 April 2014
According to a new Australian review a daily iron supplementation significantly improves maximal and submaximal exercise performance in women of reproductive age.
The review and meta-analysis included 22 randomized controlled trials which measured the exercise per- formance (maximal aerobic capacity) of a total of 911 women (aged 12 to 50 years) who took a daily
iron supplement or placebo (1). The analysis indicated that women who supplemented iron (30 to over
100 mg/day for one to more than three months) showed a significantly improved maximal and submaximal exercise performance compared to the placebo group. These benefits were clearest in iron-deficient and trained women.
The researchers commented that these findings have implications for clinical management of patients, nutritional optimization for athletes, and rationale of public health anemia control programs. The prevention and treatment of iron deficiency could improve performance in female athletes who compete in a wide range of sports requiring either or all of endurance, maximal power output, and strength. The physiologic mecha- nism for these effects may reflect a range of processes. For example, raised hemoglobin concentrations due to increased iron intake may improve oxygen-carrying capacity and hence tissue oxygenation during exercise. Women of reproductive age are at high risk of iron deficiency and iron deficiency anemia due to menstrual blood losses. Female athletes are at particular risk because of diets deficient in iron, increased losses due to gastrointestinal bleeding, and reduced iron absorption due to subclinical inflammation (2).
24 October 2018
Internationally-recognized registered dietitian, Lucy Jones, provides her perspective on the fast-growing segment of personalized nutrition.
28 August 2013
A new study from Iran reports that patients with severe multiple sclerosis have lower blood vitamin D concentrations than patients with a milder form of the disease.
1 December 2015
In 2000, the USA Institute of Medicine (IoM) noted that the amount of vitamin E necessary to maintain the correct metabolism of polyunsaturated fatty acids (PUFAs) in cell membranes is related to the intake of PUFAs. A recent review by Raederstorff et al. examines in detail the relationship between PUFA intake and vitamin E requirement. The basal metabolic requirement of 3 to 4 mg/day α-tocopherol needs to be increased to 12.5 to 20 mg/day, just to balance out typical intakes of PUFAs in the Western diet.