A large handful of dates and a big glass of ice cold milk. Yum! This simple snack was my daily childhood after school energy replenishment. Without realising it I was making great deposits in my bone bank account when my body most needed it – the teenage years. About 45% of our total skeleton is laid down in adolescence. How strong our bones get during this mega-growth period determines our bone strength for the rest of our lives.

It’s sort of like an n shape. We build up calcium in our bones until our early 20’s, it tapers off for the next 20 or so years and then we hit the calcium down-hill slide. As adults we can slow down this calcium loss but what counts most is how much calcium we had in our bones to start with. This is why it’s so important for teenagers to eat plenty of calcium. Compared with children or young adults, teenagers actually absorb more calcium from their food. It’s a great design feature that helps them meet their huge calcium needs – around 4-5 serves of dairy foods each day.

Stuff I’ve found digging around on the net … with my take on it ..c

Physical Education Key To Improving Health In Low-income Adolescents School-based physical education plays a key role in curbing obesity and improving fitness among adolescents from low-income communities, according to a new study led by researchers at the University of California, San Francisco and UC Berkeley.

It’s what we all know: physical activity is good for your body and your mind – and it’s much more fun than sitting in the classroom all day.

TV Bombards Children With Commercials For High-fat And High-sugar Foods Childhood obesity in the United States is reaching epidemic proportions. With more than one fourth of advertising on daytime and prime time television devoted to foods and beverages and continuing questions about the role television plays in obesity, a study in the November/December issue of the Journal of Nutrition Education and Behavior

Why is there such an epidemic of people wanting gluten free foods? It’s a question that’s bugged me for a while and I wanted well researched, science based answers from an expert in digestive system disorders. Clarice Hebblethwaite of Digestive Health Services in Christchurch, New Zealand is just such an expert so I was thrilled to be able to chat with her last week and get her four key reasons for society’s escalating digestive problems.

Bowel cancer is one of the most common cancers in New Zealand and on a world ranking we’re way up there. Around 2500 New Zealanders develop bowel cancer each year and about 1000 die.

Considering there are just over 4 million of us, it’s pretty high. Bowel cancer is not so common in Maori people but those who do develop it are less likely to be diagnosed and therefore more likely to die.

Bowel cancers begin as polyps. As you can see in the picture, taken at virtual colonoscopy, these are small growths that can enlarge within your bowel on a stalk. As they grow bigger, the more chance there is of one of these turning into a killer -  a malignant cancer.

Bowel cancer is more common as you age but it’s never too early to get into healthy habits to cut your risk. Here’s the top 4 ways…

1. Physical activity
2. Fibre especially from wholegrains and fruit
3. Garlic
4. Calcium – have some low fat milk and yoghurt each day

From a diet perspective, here are the top 4 ways to increase your risk of bowel cancer?

1. Obesity, especially around the stomach
2. Processed meat such as sausages and salami
3. Red meat – it’s great for iron and zinc but keep it to less than 500 grams a week
4. Alcohol