By Kilimokwanza

Mama Amina wakes before dawn to prepare breakfast for her family before the long walk to the shamba. She has never felt sick, not in any way she could name. No dizziness that lasted. No chest pains that made her stop. And so she has never seen a reason to visit the clinic for anything other than her children’s health cards.

She is not unusual. She is, in fact, representative. And according to a new research brief from the CGIAR Science Program on Better Diets and Nutrition, titled Diets and Health in Arusha and Kilimanjaro, she is also, statistically, more likely than not to have blood pressure levels that a doctor would consider dangerously high.

The brief, which assessed blood pressure and blood sugar among 807 women of reproductive age across the Arusha and Kilimanjaro regions, found that 47% of women in Arusha and 63% of women in Kilimanjaro had above-normal blood pressure. In Kilimanjaro, that means nearly two in three women tested are living with elevated readings, many of them almost certainly unaware.

A Crisis of Awareness

The numbers are made more alarming by what they reveal about health-seeking behaviour. While 43% of women had their blood pressure measured by a doctor before, only 8% had their blood sugar measured before the survey. In a region where hypertension and diabetes are both rising, the gap between prevalence and awareness is not a minor oversight. It is a structural failure.

Blood pressure was defined in the brief using standard clinical thresholds. Normal was classified as systolic blood pressure below 120 and diastolic below 80. Elevated blood pressure was defined as systolic readings between 120 and 129 with diastolic below 80. Stage 1 hypertension covered systolic readings of 130 to 139 and diastolic of 80 to 89. Stage 2, the most serious category, was defined as systolic at or above 140 and diastolic at or above 90.

Blood sugar was assessed using HbA1c, the standard measure of longer-term blood glucose control. Normal blood sugar was defined as below 5.7%, pre-diabetic as 5.7% to 6.5%, and probably diabetic as 6.5% and above.

Blood Sugar: A Different Picture, But Not a Reassuring One

The blood sugar results are more mixed but still carry a warning. The majority of women in both regions had normal blood sugar. However, nearly one-quarter of women in Arusha, 24%, were classified as pre-diabetic, compared to only 9% in Kilimanjaro. Pre-diabetes is not a safe zone. It is a clinical threshold that signals the body is already struggling to regulate glucose and that full diabetes is a real and proximate risk without intervention.

The divergence between the two regions on this measure is striking and not yet fully explained. Differences in diet composition, physical activity, and urbanisation levels between the two regions may all be contributing factors, and the ongoing research aims to untangle these threads.

The Mental Health Dimension

The brief adds one more finding that deserves to sit at the centre of any policy conversation: 10% of women showed symptoms consistent with depression. The rate was 7% in Arusha and 12% in Kilimanjaro. Depression and non-communicable diseases like hypertension are bidirectionally linked. Each can cause or worsen the other. A nutrition intervention that ignores mental health is an incomplete intervention.

The research is being conducted under the CGIAR initiative on Fruit and Vegetables for Sustainable Healthy Diets, in partnership with the International Food Policy Research Institute (IFPRI) and the World Vegetable Center, among others.

Diets Are at the Root

The brief is unambiguous about the mechanism connecting these health findings to what is on women’s plates. Unhealthy diets, including low intake of fruit and vegetables, are identified as a major risk factor for non-communicable diseases like hypertension and diabetes. The research is designed explicitly to test whether interventions to improve fruit and vegetable intake can help reduce the prevalence of these conditions.

That is the intervention hypothesis. But the baseline it has uncovered is more urgent than a hypothesis. It is a health emergency that has been developing quietly, without fanfare, behind the normalcy of daily life in northern Tanzania.

For women like Mama Amina, the clinic visit may be overdue. For the health system, the investment in community-level screening cannot come soon enough.