 Each year, outdoor air pollution from traffic in industry kills more than 4 million people around the world. Also, people get sick from various heart and lung disease, and children they develop asthma. But what does that have to do with my slide on indoor air? Well, during the next couple of minutes, I will try to convince you that your indoor air can actually be just as bad as the outdoor air around a trafficked road, and that your indoor air can also affect your health and well-being. I will come around to three things. I will tell you why to study something as unsexy as our indoor climate. I will tell you how did I do that, and what did I find? So we spend up to 90% of our time indoor. That's a lot, right? Approximately 16 hours a day is spent in our home. And that is why the activities we do inside can build up high levels of pollutants affecting our indoor climate and consequently affecting our health. With my PhD, I want to improve our indoor climate in order to prevent disease and increase quality of life. Cooking and candles, as you can see on the slide, are some of the largest contributors to indoor air pollution. That we know. Until now, we just didn't know if and how these pollutants affect our bodies in terms of biological mechanisms. To examine that, I have had 36 young individuals with mild asthma to participate in an exposure study at our unique exposure facilities here at Orchish University. All of them were exposed to three different kinds of indoor climate and three different exposure days without them knowing what they were exposed to. They were exposed to cooking. They were exposed to candles. And then we exposed them to clean air as a control exposure. We measured their health at several different time points during the exposure days. And we found that after cooking and candle exposure, participants experienced mild inflammation several places in the respiratory tract, in the nose and in the lungs. And the participants themselves actually reported much lower well-being during cooking and candle exposure compared to when exposed to clean air. We know that even quite low but frequent exposures to these pollutants may over time develop into heart and lung disease. And that is why the implications of my study is that we should think about how can we prevent indoor air pollution in our homes or at least reduce it. Coming to an end, I have some advice for you. Burn only a few candles at once. Use that cooker hood when cooking and air out every day. Then your indoor air can be a whole lot better than the air around the traffic road. Thank you for your attention.