Hey guys! Listen up! US men are 3 times more likely to have calcified coronary arteries than Japanese men, even after adjusting for known cardiovascular risk factors (cigarette smoking, alcohol consumption, high blood pressure, diabetes and blood cholesterol levels). Why? Sekikawa and colleagues attribute this observation to low omega-3 long-chain polyunsaturated fatty acid (LCPUFA) intakes.Read More »
Without dietary supplementation, many people fail to eat enough foods rich in vitamin D or get enough direct sunlight on skin surfaces to maintain optimal serum 25(OH)D levels. With suboptimal vitamin D levels, we can feel tired, be more prone to falls, minor respiratory infections and other non-communicable diseases. Based on abnormalities in bone maintenance and accretion, the Institute of Medicine defined serum 25(OH)D concentrations below 30 nmol/L as deficient and 50 nmol/L as adequate.
Using data from 2000 participants in the Diabetes Prevention Trial, Mitri and colleagues report that low vitamin D status increases the risk of metabolic syndrome.Read More »
According to ABC Sydney, ‘dementia’ and ‘cancer’ are two of the things we fear most. Tom Sightings, a former publishing executive who eased into retirement in his mid-50s, writes of 5 activities to improve brain function but he doesn’t mention nutrition (US News Money). Nutrition shouldn’t be overlooked.
Using dietary and blood analyses and cognitive scores obtained from 2,983 middle-aged adults participating in the SU.VI.MAX (Supplementation en Vitamines et Mineraux Antioxydants) study, Kesse-Guyot and colleagues report that the consumption of dietary carotenoids are correlated with cognitive performance 13 years later.Read More »
To be honest, I don’t know what to make of the study by Thomson and colleagues reporting that increases in plasma lutein concentrations may positively affect physical activity and reduce sedentary behavior. Correlations do not infer causality. I would have dismissed the paper but it was a randomized, controlled trial. Forty-four older adults (68.8y) were randomized to receive 21 mg lutein or placebo with 250 mL of full-cream milk per day for 4 weeks. It should also be noted that these individuals had very low lutein and zeaxanthin serum levels (14.5 µg/dL) even after supplementation. [See discussion below].Read More »
Good health depends upon good nutrition. And by good nutrition, I mean validated, biological measures of nutritional status. Nutritional status isn’t defined by today's food choices. Nutritional status is a reflection of long term dietary intake. Thirty-five years ago, Dr George H Beaton and colleagues published that 1-day data was a very inadequate estimation of usual intake of individuals. Researchers were cautioned about the risk of false negative conclusions when analyzing relationships between diet and health. Because of intra-individual variability, most dietary recalls are now collected over 2 days but estimating usual intake of nutrients still has limitations.Read More »
As the Polar Vortex penetrates deep into the lower latitudes of the North American continent (again), it is difficult to contemplate exposing skin for cutaneous production of vitamin D. New research finds low serum 25(OH)D levels are a concern, especially for individuals with multiple sclerosis.
Multiple sclerosis (MS) is the most common cause of neurological disability in young adults worldwide and half of those affected in Europe (Kingwell et al, 2013). The highest prevalence rates are found in Scotland, Northern Ireland, andRead More »
Eating right and being physically active aren’t just a “diet” or a “program” – they are keys to a healthy lifestyle. With healthy habits, you may reduce your risk of many chronic diseases such as heart disease, diabetes, osteoporosis, and certain cancers, and increase your chances for a longer life. So it was written in Nutrition and Your Health: Dietary Guidelines for Americans, 1980. Thirty-four years later, the same words ring true. Maintaining optimal concentrations of essential vitamins, minerals, amino acids, and long-chain polyunsaturated fatty acids are critical for longevity.
We don’t need evidence that supplements can be a source of nutrients. Just like we don’t need proof that foods provide energy and micronutrients.Read More »
Nutrition and exercise are fundamental to good health. The combination increase longevity when we avoid unhealthy risky behaviors, e.g. smoking and alcohol abuse. Malnutrition most often jeopardizes healthy via excess weight gain or inadequate intakes of essential nutrients. Eating less and exercising more will help manage obesity. Dietary choices can overcome nutrient inadequacy if one has access to these foods, financial resources to acquire, and will to prepare and consume.Read More »