Study intestinal complaints during chemotherapy. A prospective study into intestinal complaints in patients undergoing chemotherapy treatment. A pre and post implementation design is used to establish if eating two kiwi fruits per day can prevent constipation.

The Medical Research Involving Human Subjects Act (WMO) does not apply to this research. Nonetheless it will be conducted according to the principals of Good Clinical Practice (GCP), privacy legislation (AVG) and Medical Treatment Agreement Act (WGBO). The consumption of eating two kiwi's a day can be seen as a slight variation on standard advice with regards to a healthy diet. Maintaining a diary may take some time from the participant but at the same time is of use during follow up visits where side effects, including the occurrence of constipation are discussed. The The study is approved by the Advisory Committee on Local Feasibility (ACLU) of the Spaarne Gasthuis.

Inclusion Criteria:

1. First chemotherapy/cytostatics treatment
2. Neo-adjuvant or adjuvant treatment
3. Performance status World Health Organization (WHO) 0-1
4. Age 18+
5. Written informed consent
6. Command of the Dutch language

Exclusion Criteria:

1. Kiwi allergy
2. Patients using standard laxatives prior to the first chemotherapy/cytostatic treatment.
3. Patients with a history of bowel resection
4. Patients with stoma

For this study adult patients undergoing their first neo adjuvant or adjuvant chemotherapy are included.