Why do people put on differing amounts of weight?
This is pretty astonishing research, not so much for the results, as for the methodology.<p>Doing research on what people eat is VERY hard, it&#x27;s very hard to get accurate data.<p>Pairing people and having them eat identically is brilliant. I hope it&#x27;s also scalable for longer term studies.<p>By pairing people they are likely to give much more accurate reports about what they actually eat, and it allows direct comparisons.