The goal is to learn more about telomere length and other markers of ageing, how best to measure these markers, how they are related to health and lifestyle, and how people respond to learning their own telomere length results.

When you bring telomerase RNA levels down by using a mechanism that targets the RNA for destruction, the cells which were running on very high telomerase levels are now running on a lean diet of telomerase.

Cancer cells have a lot of other things that are really wrong with them, and we should never forget that these are cells that have become deaf to all the signals that the body sends out, such as you can multiply a certain amount, you can be in a certain place in the body, where to stay, where to move, and so on.

Basically, when you look at different types of cells, such as fibroblasts, which form connective tissue, or epithelial cells, from saliva, you see general correlations within a person. If telomeres are up for one cell type, they're up for others overall.

It's great isn't it, all this exercise lark? I used to laugh at people on treadmills; now I love it.

My journey into modeling began completely by chance. I was in school finishing up my master's degree in health management and policy when a friend entered me into an online modeling competition.

People have criticized me for seeming to step out of my professional role to become undignifiedly political. I'd say it was belated realization that day care, good schools, health insurance, and nuclear disarmament are even more important aspects of pediatrics than measles vaccine or vitamin D.

First of all, pharmaceutical costs are the single fastest-growing part of our health care budget.