You should read the whole paper, the abstract is not enough. Observational studies are extremely sensitive to the methods in which the data is collected. For e

You should read the whole paper, the abstract is not enough. Observational studies are extremely sensitive to the methods in which the data is collected. For example I heard about a study linking meat consumption and heart disease. To determine if there was a link, the researchers interviewed people every few weeks asking them how much they ate of various foods. Do you remember how many kilograms of chicken you've eaten in the past few weeks? I sure don't. Also I suspect that there could be a bias in people reporting less meat, either out of shame or people overestimating portions. A portion of chicken is eight ounces, that is about the size of a deck of cards. These things made me suspicious of their findings. Science is hard. Stay vigilant :)