Do cucumbers have zero calories

Answer 1

There are calories in cucumber (irrespective of the 'negative calories' theory). All food provides calories. For the calorie content of cucumber according to portion size, both with and without peel, see the page link, further down this page, listed under Related Questions. In general the negative calories theory claims that it takes more energy (calories) to digest a food than the energy (calories) contained in that food. Whether this is possible and in that sense cucumbers can be "negative calories" is not proven either way.

Answer 2

Yes, there are calories in both cucumber and lettuce. All foods have calories. For the calorie content of cucumber and lettuce, please see the page links, further down this page, listed under Related Questions.

Answer 3

No. There are calories in cucumber. There are calories in all foods. For the calorie content of cucumber, in relation to weight or quantity, please see the page link, further down this page, listed under Related Questions.