Home > Newsletters > Need to Know > Set up an air filter at home Updated 23 January 2015 Minimising pollen allergies Keep your windows closed if you suffer from tree and pollen allergies. This is especially important early morning when tree pollen counts are at their highest levels. Switch on the air conditioning or buy an air purifier if it becomes stuffy. 0 Keep your windows closed if you suffer from tree and pollen allergies. This is especially important early morning when tree pollen counts are at their highest levels. Switch on the air conditioning or buy an air purifier if it becomes stuffy. Read: Veld fires could be making your allergies worseThis allergy health tip is brought to you by More: Need to KnowSet up an air filter at home advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Parenting WATCH: Fighting for inclusive education for children with Down syndrome News First NGO-owned nursing surgery unit opens in Khayelitsha Lifestyle Neglected rural pets pose scabies risk for humans Medical SEE: 7 celebs suffering from depression Lifestyle Am I at risk of developing osteoporosis? Medical Less salt may lead to fewer nighttime bathroom trips From our sponsors How to care for your vaginal flora Live healthier Hello? » SEE: Interesting facts about hearing loss Earworms: Let it go Is it bad to sleep with earplugs all the time? SEE: Do women hear better than men? The reason why men often appear not to be listening could be because they actually can't hear you. Confident smile? » Acidic drinks can harm your kids' smiles The facts on bleaching your teeth Am I taking good care of my teeth? Why are my teeth stained? We know the rules – brush your teeth twice a day and floss to keep them healthy. But, have you ever wondered what causes those stains that sometimes appear?