health problems caused by smoking cigarettes Secondhand Smoke | and Tobacco Use Primary health effects from smoking.

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They get this energy from a molecule called ATP, which they make by breaking down glucose in a complex chemical process called glycolysis

Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription $32.99 / 30 days cancel any time Subscribe to this journal Receive 52 print issues and online access $199.00 per year only $3.83 per issue Rent or buy this article Prices vary by article type from$1.95 to$39.95 Prices may be subject to local taxes which are calculated during checkout Nature 574 , 336-337 (2019) doi: References Chiolero, A., Faeh, D., Paccaud, F