Ok, maybe a bad choice of wording, or maybe not if you think about it. Definition of poison "In the context of biology, poisons are substances that cause disturbances to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism." I think we could agree that eating 200-300gr cake filled with sugars IS causing disturbances (certainly more than a 150gr peace of fish and 150gr salad) that are bad and when you repeat eating that cake we all know where that leads to and what adverse effects it has on the body and mind. Compare that adverse and permanent damage that sugar can cause to damage that for example LSD was proven to cause (none). And you can go to jail for taking LSD, but on the other hand we subsidies sugar production and we empower bad behaviour of eating junk food in many ways. For example I watched yesterday that in UK many people who are not sick, they just are overeating and are overweight so they can not work now are given large amounts of money and housing. There are people that are using that help for decades and are not working, not loosing weight and not expected to, they are put in the category with really disabled people (which is really sad, this people can help themselves and people without limbs cant grow another.. or maybe it just shows the power of sugar addiction for some people).