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How dengue fever is re-emerging, khat leaves and a look at hair loss in both men and women. Dengue fever, like malaria, is spread by mosquitos, starts like flu but can cause severe pain to sufferers. There are fears it is now re-emerging on epidemic levels. Also a look at hair loss, what makes our hair thin and what can we do about it? Finally a report on the effect of chewing khat or qat leaves.