Relationship between Metal Exposures, Dietary Macronutrient Intake, and Blood Glucose Levels of Informal Electronic Waste Recyclers in Ghana
Abstract
:1. Introduction
2. Materials and Methods
2.1. Data Source, Study Design and Site
2.2. Data Collection Techniques & Tools
2.2.1. Anthropometric Measurements
2.2.2. Dietary Intake Assessment
2.2.3. Biological Sample Analysis
2.2.4. Blood Glucose (HbA1c) Analysis
2.3. Analytical Procedures
2.3.1. Macronutrient Analysis
2.3.2. Laboratory Metal Analysis and Quality Control
- Metal Analysis
- 2.
- Quality Control Measures
2.4. Data Processing and Analysis
3. Results
3.1. Social-Demographic Characteristics of Study Population
3.2. Metals Exposure
3.3. Dietary Macronutrients Intake
3.4. Prevalence of Diabetes
3.5. Relationship between Metal Exposures and Blood Glucose Levels
3.6. Association between Dietary Macronutrient Intake and Blood Glucose Levels
3.7. Relationship between Metal Exposures, Dietary Macronutrient Intake and Mean Blood Glucose Levels of E-Waste Recyclers and Comparison Group
4. Discussion
4.1. Dietary Macronutrient Intake among E-Waste Recyclers and Comparison Population
4.2. Prevalence of Diabetes among E-Waste Recyclers and Comparison Group
4.3. Relationship between Metal Exposures and Blood Glucose Levels
4.4. Relationship between Dietary Macronutrient Intake and HbA1c
4.5. Relationship between Metal Exposures Dietary Macronutrient Intake and Blood Glucose Levels
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Metals (µg/L) | Blood Glucose Levels (HbA1c (%)) β [95% CI] |
---|---|
E-waste recyclers and Comparison Group | |
B-Pb | 0.003 [−0.003, 0.009] |
B-Cd | −0.193 [−0.854, 0.467] |
E-waste recyclers only | |
B-Pb | 0.002 [−0.004, 0.008] |
B-Cd | 0.109 [−0.859, 1.077] |
Comparison group only | |
B-Pb | 0.028 [−0.010, 0.066] |
B-Cd | −0.589 [−1.740, 0.564] |
Appendix B
Dietary Macronutrients | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
Total Calories (g) | −0.0004 [−0.001, 0.0003] |
Carbohydrates (g) | −0.002 [−0.007, 0.002] |
Proteins (g) | −0.008 [−0.024, 0.008] |
Total Fats (g) | −0.002 [−0.016, 0.010] |
Saturated Fats (g) | 0.097 * [0.0002, 0.193] |
Mono Fats (g) | 0.020 [−0.046, 0.087] |
Poly fats (g) | 0.019 [−0.061, 0.099] |
Omega 3 (g) | 4.800 * [1.852, 7.748] |
Omega 6 (g) | 0.083 [−0.076, 0.243] |
Cholesterol (mg) | 0.004 * [0.0003, 0.009] |
Dietary Fibre (g) | −0.003 [−0.042, 0.036] |
Appendix C
Dietary Macronutrients | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
Total Calories (g) | 0.000 [−0.001, 0.001] |
Carbohydrates (g) | 0.003 [−0.004, 0.010] |
Proteins (g) | 0.019 [−0.009, 0.047] |
Total Fats (g) | −0.001 [−0.016, 0.015] |
Saturated Fats(g) | −0.043 [−0.242, 0.157] |
Mono Fats (g) | −0.019 [−0.123, 0.086] |
Poly fats (g) | 0.019 [−0.147, 0.185] |
Omega 3 (g) | 1.527 [−3.214, 6.268] |
Omega 6 (g) | 0.073 [−0.161, 0.306] |
Cholesterol (mg) | 0.008 [−0.002, 0.019] |
Dietary Fibre (g) | −0.022 [−0.078, 0.034] |
Appendix D
Variables | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Pb | 0.007 [−0.002, 0.015] |
Total Calories | −0.001 [−0.002, 0.001] |
B-Pb | 0.007 [−0.001, 0.015] |
Carbohydrate (g) | −0.005 [−0.012, 0.001] |
B-Pb | 0.007 [−0.001, 0.015] |
Protein (g) | −0.0001 [−0.030, 0.030] |
B-Pb | 0.007 [−0.001, 0.015] |
Total Fats (g) | −0.002 [−0.021, 0.016] |
B-Pb | 0.008 * [0.00004, 0.016] |
Saturated Fats (g) | 0.136 * [0.015, 0.258] |
B-Pb | 0.008 [−0.0005, 0.016] |
Mono Fats (g) | 0.044 [−0.037, 0.125] |
B-Pb | 0.008 [−0.001, 0.009] |
Poly fats (g) | 0.037 [−0.058, 0.132] |
B-Pb | 0.007 * [0.0002, 0.015] |
Omega 3 (g) | 6.884 * [3.247, 10.523] |
B-Pb | 0.008 [−0.0001, 0.016] |
Omega 6 (g) | 0.152 [−0.035, 0.339] |
B-Pb | 0.009 * [0.001, 0.017] |
Cholesterol (mg) | 0.007 * [0.001, 0.012] |
B-Pb | 0.007 [−0.001, 0.015] |
Dietary Fibre (g) | −0.016 [−0.070, 0.037] |
Appendix E
Variables | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Cd | 0.250 [−0.879, 1.379] |
Total Calories | −0.001 [−0.002, 0.0004] |
B-Cd | 0.223 [−0.900, 1.346] |
Carbohydrate (g) | −0.005 [−0.012, 0.002] |
B-Cd | 0.242 [−0.903, 1.388] |
Protein (g) | −0.001 [−0.032, 0.029] |
B-Cd | 0.273 [−0.877, 1.423] |
Total Fats (g) | −0.004 [−0.023, 0.015] |
B-Cd | 0.175 [−0.933, 1.284] |
Saturated Fats (g) | 1.121 [−0.005, 0.246] |
B-Cd | 0.254 [−0.885, 1.394] |
Mono Fats (g) | 0.029 [−0.053, 0.111] |
B-Cd | 0.251 [−0.892, 1.395] |
Poly fats (g) | 0.018 [−0.077, 0.113] |
B-Cd | −0.088 [−1.133, 0.958] |
Omega 3 (g) | 6.797 * [2.960, 10.634] |
B-Cd | 0.232 [−0.895, 1.359] |
Omega 6 (g) | 0.121 [−0.069, 0.312] |
B-Cd | 0.265 [−0.840, 1.370] |
Cholesterol (mg) | 0.005 [−0.0001, 0.011] |
B-Cd | 0.335 [−0.814, 1.483] |
Dietary Fibre (g) | −0.020 [−0.075, 0.035] |
Appendix F
Variables | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Pb | 0.026 [−0.013, 0.065] |
Total Calories | 0.0002 [−0.001, 0.001] |
B-Pb | 0.025 [−0.014, 0.065] |
Carbohydrate (g) | 0.001 [−0.006, 0.008] |
B-Pb | 0.002 [−0.004, 0.008] |
Protein (g) | −0.024 [−0.014, 0.062] |
B-Pb | 0.028 [−0.011, 0.066] |
Total Fats (g) | −0.001 [−0.016, 0.015] |
B-Pb | [0.027 [−0.011, 0.066] |
Saturated Fats (g) | −0.032 [−0.229, 0.165] |
B-Pb | 0.027 [−0.011, 0.065] |
Mono Fats (g) | −0.011 [−0.114, 0.093] |
B-Pb | 0.028 [−0.010, 0.067] |
Poly fats (g) | 0.024 [−0.140, 0.187] |
B-Pb | 0.030 [−0.010, 0.070] |
Omega 3 (g) | 1.329 [−3.470, 6.134] |
B-Pb | 0.029 [−0.011, 0.068] |
Omega 6 (g) | 0.0536 [−0.179, 0.286] |
B-Pb | 0.033 [−0.004, 0.070] |
Cholesterol (mg) | 0.010 [−0.001, 0.020] |
B-Pb | 0.029 [−0.010, 0.067] |
Dietary Fibre (g) | −0.019 [−0.075, 0.037] |
Appendix G
Variables | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Cd | −0.541 [−1.720, 0.638] |
Total Calories | 0.0003 [−0.001, 0.001] |
B-Cd | −0.558 [−1.726, 0.609] |
Carbohydrate (g) | 0.002 [−0.005, 0.009] |
B-Cd | −0.456 [−1.623, 0.711] |
Protein (g) | 0.017 [−0.012, 0.046] |
B-Cd | −0.599 [−1.778, 0.580] |
Total Fats (g) | −0.001 [−0.017, 0.014] |
B-Cd | −0.580 [−1.750, 0.589] |
Saturated Fats (g) | −0.039 [−0.239, 0.160] |
B-Cd | −0.585 [−1.755, 0.586] |
Mono Fats (g) | −0.018 [−0.122, 0.086] |
B-Cd | −0.624 [−1.812, 0.564] |
Poly fats (g) | 0.028 [−0.140, 0.197] |
B-Cd | −0.525 [−1.728, 0.679] |
Omega 3 (g) | 0.674 [−4.221, 5.568] |
B-Cd | −0.543 [−1.740, 0.654] |
Omega 6 (g) | 0.048 [−0.189, 0.286] |
B-Cd | −0.490 [−1.632, 0.653] |
Cholesterol (mg) | 0.008 [−0.003, 0.018] |
B-Cd | −0.621 [−1.789, 0.548] |
Dietary Fibre (g) | −0.019 [−0.076, 0.039] |
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E-waste Recycler | Comparison Group | p-Value | |||
---|---|---|---|---|---|
Mean ± SD | Median (IQR) | Mean ± SD | Median (IQR) | ||
Total Calories (kcal) | 2050.05 ± 673.05 | 1996.75 ± 28.89 | 2067.34 ± 793.50 | 1976.38 ± 1165.5 | 0.75 |
Carbohydrates (g) | 305.28 ± 105.93 | 295 ± 124.5 | 289.901 ± 118.74 | 271 ± 175 | 0.39 |
Proteins (g) | 72.15 ± 29.89 | 67.98 ± 33.83 | 65.30 ± 27.20 | 59.63 ± 37.7 | 0.10 |
Total Fats (g) | 66.57 ± 32.46 | 61.48 ± 32.93 | 74.32 ± 50.63 | 62.9 ± 37.85 | 0.64 |
Saturated Fats (g) | 6.25 ± 4.52 | 5.45 ± 5.22 | 6.58 ± 4.80 | 5.96 ± 6.34 | 0.73 |
Mono Fats (g) | 6.99 ± 6.13 | 5.62 ± 4.92 | 9.04 ± 8.33 | 7.44 ± 7.26 | 0.10 |
Poly Fats (g) | 3.40 ± 5.00 | 1.94 ± 2.37 | 4.55 ± 5.02 | 2.95 ± 3.77 | 0.02 * |
Omega 3 (g) | 0.16 ± 0.14 | 0.12 ± 0.18 | 0.19 ± 0.17 | 0.14 ± 0.19 | 0.46 |
Omega 6 (g) | 1.89 ± 2.50 | 1.21 ± 1.66 | 2.92 ± 3.86 | 1.88 ± 1.95 | 0.02 * |
Cholesterol (mg) | 123.12 ± 97.21 | 91.5 ± 132.15 | 99.75 ± 77.56 | 91 ± 91.4 | 0.28 |
Dietary Fibre (g) | 19.32 ± 11.11 | 17.58 ± 13.5 | 20.89 ± 13.97 | 17.43 ± 14.98 | 0.96 |
Blood Glucose Categories | E-Waste Recyclers % [95% CI] | Comparison Group % [95% CI] | χ2 (p-Value) |
---|---|---|---|
Blood Glucose Category 1 | 6.20 (0.05) | ||
Low blood glucose levels (<4.5%) | 27.00 [19.10, 36.69] | 37.26 [24.81, 51.65] | |
Normal Blood glucose levels (4.5–6.9%) | 42.00 [32.63, 51.99] | 21.57 [12.23, 35.17] | |
High blood glucose levels (>6.9%) | 31.00 [22.63, 40.84] | 41.18 [28.41, 55.26] | |
Blood Glucose Category 2 | 6.19 (0.01) | ||
Regulated blood glucose (4.5–6.9%) | 42.00 [32.63, 51.99] | 21.57 [12.23, 35.17] | |
Unregulated blood glucose levels (<4.5 and >6.9%) | 58.00 [48.01, 67.37] | 78.43 [64.83, 87.77] |
Dietary Macronutrients | Mean Blood Glucose Levels (HbA1c (%)) β [95% CI] |
---|---|
Total Calories (kcal) | −0.0001 [−0.001, 0.0004] |
Carbohydrates (g) | −0.0004 [−0.004, 0.003] |
Proteins (g) | 0.001 [−0.013, 0.014] |
Total Fats (g) | −0.003 [−0.012, 0.006] |
Saturated Fats (g) | 0.061 [−0.025, 0.147] |
Mono Fats (g) | 0.005 [−0.048, 0.058] |
Poly fats (g) | 0.015 [−0.054, 0.085] |
Omega 3 (g) | 3.397 * [1.010, 5.784] |
Omega 6 (g) | 0.089 [−0.030, 0.209] |
Cholesterol (mg) | 0.005 * [.001, 0.009] |
Dietary Fibre (g) | −0.013 [−0.042, 0.018] |
Variables | Mean Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Pb | 0.007 [−0.002, 0.015] |
Total Calories | −0.001 [−0.002, 0.001] |
B-Pb | 0.007 [−0.001, 0.015] |
Carbohydrate (g) | −0.005 [−0.012, 0.001] |
B-Pb | 0.007 [−0.001, 0.015] |
Protein (g) | 0.0001 [−0.030, 0.030] |
B-Pb | 0.007 [−0.001, 0.015] |
Total Fats (g) | −0.002 [−0.021, 0.016] |
B-Pb | 0.008 * [0.00004, 0.016] |
Saturated Fats (g) | 0.136 * [0.015, 0.258] |
B-Pb | 0.008 [−0.0005, 0.016] |
Mono Fats (g) | 0.044 [−0.037, 0.125] |
B-Pb | 0.008 [−0.001, 0.016] |
Poly fats (g) | 0.037 [−0.058, 0.132] |
B-Pb | 0.007 * [0.0002, 0.015] |
Omega 3 (g) | 6.88 * [3.247, 10.523] |
B-Pb | 0.008 [−0.0001, 0.016] |
Omega 6 (g) | 0.152 [−0.035, 0.339] |
B-Pb | 0.009 * [0.001, 0.017] |
Cholesterol (mg) | 0.007 * [0.001, 0.012] |
B-Pb | 0.007 [−0.001, 0.015] |
Dietary Fibre (g) | −0.016 [−0.070, 0.037] |
Variables | Blood Glucose Levels (HbA1c (%)) β (95% CI) |
---|---|
B-Cd | 0.250 [−0.879, 1.379] |
Total Calories | −0.001 [−0.002, 0.0004] |
B-Cd | 0.223 [−0.900, 1.346] |
Carbohydrate (g) | −0.005 [−0.012, 0.002] |
B-Cd | 0.242 [−0.903, 1.388] |
Protein (g) | −0.001 [−0.032, 0.029] |
B-Cd | 0.273 [−0.877, 1.423] |
Total Fats (g) | −0.004 [−0.023, 0.015] |
B-Cd | 0.175 [−0.933, 1.284] |
Saturated Fats (g) | 1.121 [−0.005, 0.246] |
B-Cd | 0.254 [−0.885, 1.394] |
Mono Fats (g) | 0.029 [−0.053, 0.111] |
B-Cd | 0.251 [−0.892, 1.395] |
Poly fats (g) | 0.018 [−0.077, 0.113] |
B-Cd | −0.088 [−1.133, 0.958] |
Omega 3 (g) | 6.797 * [2.960, 10.634] |
B-Cd | 0.232 [−0.895, 1.359] |
Omega 6 (g) | 0.121 [−0.069, 0.312] |
B-Cd | 0.265 [−0.840, 1.370] |
Cholesterol (mg) | 0.005 [−0.0001, 0.011] |
B-Cd | 0.335 [−0.075, 1.483] |
Dietary Fibre (g) | −0.020 [−0.075, 0.035] |
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Dawud, F.; Takyi, S.A.; Arko-Mensah, J.; Basu, N.; Egbi, G.; Ofori-Attah, E.; Bawuah, S.A.; Fobil, J.N. Relationship between Metal Exposures, Dietary Macronutrient Intake, and Blood Glucose Levels of Informal Electronic Waste Recyclers in Ghana. Int. J. Environ. Res. Public Health 2022, 19, 12768. https://doi.org/10.3390/ijerph191912768
Dawud F, Takyi SA, Arko-Mensah J, Basu N, Egbi G, Ofori-Attah E, Bawuah SA, Fobil JN. Relationship between Metal Exposures, Dietary Macronutrient Intake, and Blood Glucose Levels of Informal Electronic Waste Recyclers in Ghana. International Journal of Environmental Research and Public Health. 2022; 19(19):12768. https://doi.org/10.3390/ijerph191912768
Chicago/Turabian StyleDawud, Fayizatu, Sylvia Akpene Takyi, John Arko-Mensah, Niladri Basu, Godfred Egbi, Ebenezer Ofori-Attah, Serwaa Akoto Bawuah, and Julius N. Fobil. 2022. "Relationship between Metal Exposures, Dietary Macronutrient Intake, and Blood Glucose Levels of Informal Electronic Waste Recyclers in Ghana" International Journal of Environmental Research and Public Health 19, no. 19: 12768. https://doi.org/10.3390/ijerph191912768