Recommendations for further study

i. Since these study concentrated on selected essential and toxic minerals, further geochemical and nutritional investigations can be performed on geophagic materials to identify the levels of other minerals which will help determine the suitability of the practice.

ii. Although this study concentrated on geophagic materials from open-air markets, supermarkets and quarry mines, other sources such as termite moulds, walls of buildings etc should be determined since different sources can have different levels of the minerals.

iii. The findings of this study are from Kiambu County, other studies can be done on geophagic materials obtained from other Counties as the findings cannot be generalized to other counties.

iv. This study assumed that the minerals were 50.0% bioavailable, studies can be performed on specific mineral to determine its bioavailability.

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APPENDICES