As summer approaches in the Northern Hemisphere, we look forward to spending more time outdoors. This is good because our skin can synthesize vitamin D when exposed to sunlight. With most people spending most of their days indoors, serum 25(OH)D concentrations are known to decrease through the fall and winter months. The most recent data (NHANES 2007-2014) finds 24% of Americans have insufficient vitamin D levels (<50 nmol/L).
Entries filed under 'Immune health'
On Tuesday, April 5, Dr Philip C Calder was awarded the 10th Danone International Prize for Nutrition in recognition of his nutrition research contributions at the annual meeting of the American Society for Nutrition (ASN).
In a video interview, Professor Calder discusses his surprise and the personal impact of this award. He highlights the importance of nutrition, especially vitamins and omega-3 fatty acids, in the support of the immune system.
Remember when 3 commercial broadcast networks provided news, typically at 6 and 11pm? With 24-hour news networks, there is a continuous stream of updates. No longer do we have Walter Cronkite, the “most trusted man in America”, ending the day with “And that’s the way it is”.
You may have heard that there is insufficient evidence (two studies) to conclude that omega-3s alone, or combined with anti-depressant therapy, affect depression. Only 2 studies involving omega-3 fatty acids were included in the Agency for Healthcare Research and Quality (AHRQ) report (Table 16).
Increasingly, studies link air pollution, exposure to fine particulate matter in the air which causes haze, with lung cancer. Fine particulate matter from motor vehicles and power generation stations, the main sources of urban pollution, cause oxidative injury and inflammation in the bronchiole and lung tissues and are linked to increased risk of asthma.
The health consequences of air pollution are particularly felt in Beijing with more than 200 days being labeled as ‘unhealthy’ and smog being so severe last week that a ‘red alert’ was issued. China’s smog may make headlines but it can be much worse, eg. India.
Every 1% increase in plasma phospholipid eicosapentaenoic acid (EPA) concentration (% of total fatty acids) is associated with a 12% increase in the probability of remission in rheumatoid arthritis, according to a new Br J Nutrition study.
The patients had been diagnosed with rheumatoid arthritis within the past 12 months. They were randomized to receive 3.2g EPA + 2.3 g docosahexaenoic acid (DHA) daily (high-dose) or 0.21 g EPA + 0.19g DHA daily (low-dose) and results are presented after 1 year.