Hong Kong - It's one of the sunniest cities in the world, but more than six out of 10 people in sub-tropical Hong Kong get too little sunshine, according to a survey published Sunday.
More than 62 per cent of people examined for a University of Hong Kong study were found to be suffering from vitamin D deficiency even though about two-thirds of the days in the year are sunny and hot.
Lifestyle is believed to be a major factor, as most people in the high-rise city shun the sun and exercise, while working long hours in offices.