Frauke Tillmans, PhD, is Research Director at the Divers Alert Network (DAN). Originally from Germany, Dr. Tillmans has a degree in Human Biology and a PhD specializing in oxidative stress (free radicals) which is involved in acute diving injuries and may affect long term health of divers. Dr. Tillmans is also a very experienced public safety diver, scientific diver, diving safety officer, and diving instructor. She has worked as a researcher in global collaborative projects covering decompression stress, inert gas narcosis, and oxygen toxicity and was employed with the German Navy before joining DAN in 2019.