My article in Solidarity 579 on Covid-toll differences between countries omitted diet as a factor. Poor diet and overweight can make people less able to deal with infectious diseases. Japan, with a Covid death rate per population, so far, only 3% of Britain’s, has a different diet and an obesity rate of 4%: compare the UK’s 28%, the highest in Europe after Malta. The only scientific paper I can find on this names Bulgaria, Greece, and Romania as countries likely to do well because of diet, and then all three in December had Covid death rates per population higher than the UK. But diet may be a factor.