The cases and the controls were of matching age. The minimum age was 5 and the maximum was 11 years with a comparable mean of 7.61 ± 1.79 and 8.16 ± 1.78 respectively as shown in table (1)
The fasting blood glucose showed an insignificant P-value of 0.535 between cases and controls as shown in table (1).
Table 1: Comparison of Age and FBG (mg/dl) between Controls and Cases
Table 1
Comparison of Age and FBG (mg/dl) between Controls and Cases
Parameters | Groups | N | Min. | Max. | Mean ± S.D. | Median | P value |
Age | Controls | 46 | 5.00 | 11.00 | 7.61 ± 1.79 | 8.00 | 0.148 |
| Cases | 44 | 5.00 | 11.00 | 8.16 ± 1.78 | 8.00 | |
FBG (mg/dl) | Controls | 45 | 60.00 | 113.00 | 84.64 ± 11.62 | 84.00 | 0.535 |
| Cases | 44 | 62.00 | 119.00 | 86.14 ± 10.98 | 84.50 | |
The sex distribution was homogenous in both groups. There were almost equal numbers and percentages of both genders in the two groups with an insignificant P value of 0.404 as revealed in figure (1).
Figure (1): Comparison between gender distribution in both Groups (Controls and Cases)
A set of questionnaires was answered by all participants to specify the frequency of intake of vegetables and fruits separately (daily, weekly, monthly or not at all). Thirty-three out of forty-six controls (71.7%) consumed vegetables on a daily basis (43.5% once daily, 28.3% consumed 2–3 times per day) compared to only twenty-seven (61.4%) among cases (36.4% once daily and 25% more than once). On the other hand, the weekly consumption of vegetables was more prevalent in obese children than their normal peers with a percent of 31.8% and 21.8% respectively as shown in figure (2). As regards fruits, the daily consumption was frequented more among the obese group 25 (58.1%) (27.9% once daily, 30.2% consumed 2–3 times per day) and less frequented among the control group 20 (43.5%) (23.9% once daily and 19.6% 2–3 times per day). Twenty children from the control group were consuming fruits weekly while a lower number of thirteen obese children had a weekly intake of fruits as shown in figure (3).
Figure (2): Vegetables intake in cases compared to controls
Figure (3): fruits intake in cases compared to controls
According to the consumption frequency of fruits and vegetables, the cases and controls were divided furthermore into 2 main groups: a group who consumed daily fruits and vegetables, and the other group consumed fruits and vegetables occasionally as shown in table (2)
There was no significant difference between frequency of fruits and vegetables consumption in obese and control group.
Regarding the frequency of vegetable consumption, it was observed that among the control group, the percentage of daily vegetables consumption was higher (71.7%), (43.5% once daily, 28.3% consumed 2–3 times per day) than among the obese group (61.4%), (36.4% once daily and 25% consumed 2–3 times per day) with no significant difference P value 0.297.
Conversely, regarding the frequency of fruit consumption, our study found that the percentage of the obese group who had more daily fruits consumption 58.1% (27.9% once daily, 30.2% consumed 2–3 times per day) was higher than the control group 43.5% (23.9% once daily and 19.6% 2–3 times per day) also with no significant difference (P value 0.167)
Table 2: Comparison between cases and control regarding frequency of vegetables and fruits intake
Table 2
Comparison between cases and control regarding frequency of vegetables and fruits intake
| Control 46 | Obese 44 | P value |
Daily vegetables intake | 33 (71.7%) | 27 (61.4%) | 0.297 |
Occasional vegetables intake | 13 (28.3%) | 17 (38.6%) | |
Daily fruit intake | 20 (43.5%) | 25 (58.1%%) | 0.167 |
Occasional fruit intake | 26 (56.5%) | 18 (41.9%) | |
As for the impact of frequency of vegetable consumption there were no significant differences observed between the two groups although those consuming vegetables daily had lower fasting blood sugar, total cholesterol, LDL, LDL/HDL ratio and triglycerides/HDL ratio than those with occasional consumption.
The mean fasting blood sugar level in the group consuming vegetables daily 85.59 ± 12.62, was lower than the group consuming vegetables occasionally 87.00 ± 8.00, The mean total cholesterol level was 161.74 ± 34.52 in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was higher 168.59 ± 31.09, the mean triglycerides level was 81.56 ± 42.20, in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was lower 74.00 ± 30.24, the mean HDL level was 38.59 ± 8.20 in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was higher HDL 40.24 ± 10.08, the mean LDL level was 107.07 ± 32.1 in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was higher 114.06 ± 30.2, the mean LDL/HDL ratio 2.92 ± 1.13 in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was higher 3.11 ± 1.47, the mean triglycerides/HDL ratio 2.26 ± 1.34 in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was lower 1.95 ± 0.90, the mean triglycerides/glucose ratio 8.06 ± 0.22. in the group consuming vegetables daily, while in the group consuming vegetables occasionally it was lower 8.03 ± 0.21. As shown in table (3)
Table 3: Comparison between Frequency of Vegetables Consumption in obese groups as regards metabolic parameters
Table 3
Comparison between Frequency of Vegetables Consumption in obese groups as regards metabolic parameters
Parameters | Groups | N | Min. | Max. | Mean ± S.D. | P value |
FBG | Daily intake of vegetables | 27 | 62 | 119 | 85.59 ± 12.62 | 0.684 |
| Occasional intake of vegetables | 17 | 79 | 109 | 87.00 ± 8.00 | |
Chol | Daily intake of vegetables | 27 | 100 | 227 | 161.74 ± 34.52 | 0.510 |
| Occasional intake of vegetables | 17 | 112 | 225 | 168.59 ± 31.09 | |
Trig | Daily intake of vegetables | 27 | 40 | 242 | 81.56 ± 42.20 | 0.525 |
| Occasional intake of vegetables | 17 | 25 | 148 | 74.00 ± 30.24 | |
HDL | Daily intake of vegetables | 27 | 25 | 53 | 38.59 ± 8.20 | 0.557 |
| Occasional intake of vegetables | 17 | 23 | 55 | 40.24 ± 10.08 | |
LDL | Daily intake of vegetables | 27 | 46 | 166 | 107.07 ± 32.13 | 0.477 |
| Occasional intake of vegetables | 17 | 57 | 149 | 114.06 ± 30.20 | |
LDL/HDL | Daily intake of vegetables | 27 | 1.02 | 5 | 2.92 ± 1.13 | 0.632 |
| Occasional intake of vegetables | 17 | 1.14 | 6.48 | 3.11 ± 1.47 | |
Trig/HDL | Daily intake of vegetables | 27 | 0.75 | 7.33 | 2.26 ± 1.34 | 0.416 |
| Occasional intake of vegetables | 17 | 0.50 | 4.24 | 1.95 ± 0.90 | |
TyG | Daily intake of vegetables | 27 | 7.69 | 8.71 | 8.06 ± 0.22 | 0.674 |
| Occasional intake of vegetables | 17 | 7.51 | 8.41 | 8.03 ± 0.21 | |
P value between the groups were calculated using Independent Samples T-Test. |
Comparing the frequency of fruits consumption within the obese groups showing also no significant differences between the two groups, although those consuming fruits daily had higher fasting blood sugar and triglycerides, triglycerides/HDL ratio and triglycerides/glucose ratio, lower total cholesterol, HDL, LDL and LDL/HDL ratio.
The mean fasting blood sugar level in the group consuming fruits daily 86.52 ± 13.31, was higher than the group consuming fruits occasionally 85.44 ± 7.32, The mean total cholesterol level was 162.48 ± 35.23 in the group consuming fruits daily, while in the group consuming fruits occasionally it was higher 167.50 ± 31.46, the mean triglycerides level was 82.24 ± 46.40, in the group consuming fruits daily, while in the group consuming fruits occasionally it was lower 73.83 ± 23.12, the mean HDL level was 38.60 ± 9.79 in the group consuming fruits daily, while in the group consuming fruits occasionally it was higher HDL 40.06 ± 7.96, the mean LDL level in the group consuming fruits daily was 107.72 ± 29.43 while in the group consuming fruits occasionally it was higher 113.11 ± 34.96, the mean LDL/HDL ratio 2.94 ± 1.07, in the group consuming fruits daily, while in the group consuming fruits occasionally it was higher 3.09 ± 1.54, the mean triglycerides/HDL ratio 2.31 ± 1.46 in the group consuming fruits daily, while in the group consuming fruits occasionally it was lower 1.91 ± 0.68, the mean triglycerides/glucose ratio 8.06 ± 0.24. in the group consuming fruits daily, while in the group consuming fruits occasionally it was lower 8.03 ± 0.18. As shown in table (4)
Table 4: Comparison between Frequency of Fruit Consumption groups as regards metabolic parameters
Table 4
Comparison between Frequency of Fruit Consumption groups as regards metabolic parameters
Parameters | Groups | N | Min. | Max. | Mean ± S.D. | P value |
FBG | Daily intake of fruits | 25 | 62 | 119 | 86.52 ± 13.31 | 0.736 |
| Occasional intake of fruits | 18 | 73 | 102 | 85.44 ± 7.32 | |
Chol | Daily intake of fruits | 25 | 100 | 227 | 162.48 ± 35.23 | 0.633 |
| Occasional intake of fruits | 18 | 112 | 222 | 167.50 ± 31.46 | |
Trig | Daily intake of fruits | 25 | 40 | 242 | 82.24 ± 46.40 | 0.484 |
| Occasional intake of fruits | 18 | 25 | 117 | 73.83 ± 23.12 | |
HDL | Daily intake of fruits | 25 | 25 | 55 | 38.60 ± 9.79 | 0.607 |
| Occasional intake of fruits | 18 | 23 | 50 | 40.06 ± 7.96 | |
LDL | Daily intake of fruits | 25 | 46 | 158 | 107.72 ± 29.43 | 0.587 |
| Occasional intake of fruits | 18 | 57 | 166 | 113.11 ± 34.96 | |
LDL/HDL | Daily intake of fruits | 25 | 1.02 | 5.68 | 2.94 ± 1.07 | 0.713 |
| Occasional intake of fruits | 18 | 1.14 | 6.48 | 3.09 ± 1.54 | |
Trig/HDL | Daily intake of fruits | 25 | 0.75 | 7.33 | 2.31 ± 1.46 | 0.240 |
| Occasional intake of fruits | 18 | 0.50 | 3.45 | 1.91 ± 0.68 | |
TyG | Daily intake of fruits | 25 | 7.69 | 8.71 | 8.06 ± 0.24 | 0.730 |
| Occasional intake of fruits | 18 | 7.51 | 8.28 | 8.03 ± 0.18 | |
P value between the groups were calculated using Independent Samples T-Test. |
Daily intake of vegetables was not associated with lower risks of increased levels of fasting blood sugar, cholesterol, triglycerides, LDL, LDL/HDL ratio, Triglycerides/HDL ratio and Triglycerides/glucose ratio. P value was as follow 0.363, 0.774, 0.947,0.211, 0.714, 0.093 and 0.736. As shown in table (5)
Table 5: Effect of Frequency of Vegetable Consumption on metabolic parameters.
Table 5
Effect of Frequency of Vegetable Consumption on metabolic parameters.
Parameters | Vegetable Frequency Consumption | Chi-Square | P value | OR (95% CI) |
Occasional intake of vegetables (n (%)) | Daily intake of vegetables (n (%)) |
FBG | At risk | 1 (5.90%) | 4 (14.80%) | 0.826 | 0.363 | 0.359 |
| Not at risk | 16 (94.10%) | 23 (85.20%) | | | (0.037–3.522) |
Chol | At risk | 2 (11.80%) | 4 (14.80%) | 0.082 | 0.774 | 0.767 |
| Not at risk | 15 (88.20%) | 23 (85.20%) | | | (0.124–4.721) |
Trig | At risk | 2 (11.80%) | 3 (11.10%) | 0.004 | 0.947 | 1.067 |
| Not at risk | 15 (88.20%) | 24 (88.90%) | | | (0.159–7.145) |
HDL | At risk | 7 (41.20%) | 12 (44.40%) | 0.045 | 0.831 | 0.875 |
| Not at risk | 10 (58.80%) | 15 (55.60%) | | | (0.256–2.989) |
LDL | At risk | 6 (35.30%) | 5 (18.50%) | 1.566 | 0.211 | 2.400 |
| Not at risk | 11 (64.70%) | 22 (81.50%) | | | (0.598–9.637) |
LDL/HDL | At risk | 3 (17.60%) | 6 (22.20%) | 0.134 | 0.714 | 0.750 |
| Not at risk | 14 (82.40%) | 21 (77.80%) | | | (0.160–3.506) |
Trig/HDL | At risk | 1 (5.90%) | 7 (25.90%) | 2.817 | 0.093 | 0.179 |
| Not at risk | 16 (94.10%) | 20 (74.10%) | | | (0.020–1.605) |
TyG | At risk | 1 (5.90%) | 1 (3.70%) | 0.114 | 0.736 | 1.625 |
| Not at risk | 16 (94.10%) | 26 (96.30%) | | | (0.095–27.838) |
P value between the groups were calculated using Crosstab Chi-Square. |
Not only vegetables but also daily intake of fruits was not associated with lower risks of high fasting blood sugar, cholesterol, triglycerides, LDL, LDL/HDL ratio, Triglycerides/HDL ratio and Triglycerides/glucose ratio. P value was as follows: 0.292, 0.663, 0.663, 0.32, 0.34, 0.062 and 0.219 respectively. As shown in table (6)
Table 6: Effect of Frequency of Fruit Consumption on metabolic parameters.
Table 6
Effect of Frequency of Fruit Consumption on metabolic parameters.
Parameters | Fruit Frequency Consumption | Chi-Square | P value | OR (95% CI) |
Occasional intake of fruits (n (%)) | Daily intake of fruits (n (%)) |
FBG | At risk | 1 (5.60%) | 4 (16.00%) | 1.111 | 0.292 | 0.309 |
| Not at risk | 17 (94.40%) | 21 (84.00%) | | | (0.032–3.027) |
Chol | At risk | 3 (16.70%) | 3 (12.00%) | 0.190 | 0.663 | 1.467 |
| Not at risk | 15 (83.30%) | 22 (88.00%) | | | (0.260–8.270) |
Trig | At risk | 1 (5.60%) | 4 (16.00%) | 1.111 | 0.292 | 0.309 |
| Not at risk | 17 (94.40%) | 21 (84.00%) | | | (0.032–3.027) |
HDL | At risk | 7 (38.90%) | 12 (48.00%) | 0.352 | 0.553 | 0.689 |
| Not at risk | 11 (61.10%) | 13 (52.00%) | | | (0.201–2.359) |
LDL | At risk | 6 (33.30%) | 5 (20.00%) | 0.977 | 0.323 | 2.000 |
| Not at risk | 12 (66.70%) | 20 (80.00%) | | | (0.500–7.997) |
LDL/HDL | At risk | 5 (27.80%) | 4 (16.00%) | 0.877 | 0.349 | 2.019 |
| Not at risk | 13 (72.20%) | 21 (84.00%) | | | (0.457–8.920) |
Trig/HDL | At risk | 1 (5.60%) | 7 (28.00%) | 3.481 | 0.062 | 0.151 |
| Not at risk | 17 (94.40%) | 18 (72.00%) | | | (0.017–1.362) |
TyG | At risk | 0 (0.00%) | 2 (8.00%) | 1.510 | 0.219 | 1.783 |
| Not at risk | 18 (100.00%) | 23 (92.00%) | | | (1.360–2.337) |
P value between the groups were calculated using Crosstab Chi-Square. |
The effect of vegetables and fruits intake on cardio metabolic health is still controversial, their high content of fiber, vitamins, phenols help in prevention of obesity and cardiovascular risk factors (Funtikova et al, 2015).