Introduction The most effective and affordable public health strategy to prevent
hypertension, stroke and renal disease is by reducing daily salt consumption.
Therefore, this study aims to determine the association of knowledge, attitude
and practice on salt diet intake and to identify foods contributing to high
sodium intake.
Methods Secondary data analysis was performed on MySalt 2016 data. It was
conducted from November 2015 until January 2016 which involving Ministry
of Health Staff worked at 16 study sites in Malaysia. Salt intake was
measured using 24 hours urinary sodium excretion. Food frequency
questionnaire was used to determine the sodium sources. Knowledge, attitude
and practice of salt intake were assessed using a validated questionnaire
adapted from WHO. Demographic data and anthropometric measures also
were collected. Sodium levels of more than 2400mg/day was categorised as
high sodium intake. Data were analysed using SPSS software version 21.
Results The mean sodium intake estimated by 24 hours urinary sodium excretion was
2853.23 + 1275.8 mg/day. Food groups namely rice/noodles (33.8%),
sauces/seasoning (20.6%), meat and poultry (12.6%) and fish/seafoods
(9.3%) were the major contributors of dietary sodium. In multiple logistic
regression analysis, being a male (aOR=2.83, 95% CI 2.02 – 3.96) and obese
(aOR=6.78, 95% CI 1.98 – 23.18) were significantly associated with high
urinary sodium excretions. In addition, those who were unsure that high salt
intake can cause hypertension (aOR=1.24, 95% CI 0.65 – 2.36), those who
think that they consumed too much salt (aOR=2.10, 95% CI 1.13 – 3.87) and
those who only use salt rather than other spices for cooking (aOR=2.07, 95%
CI 1.29 – 3.30) were significantly associated with high urinary sodium
excretion.
Conclusions This study showed that the main sources of sodium among Malay healthcare
staff is cooked food. Poor knowledge and practice towards reducing salt
consumption among them contributes to the high sodium consumption. The
practice of healthy eating among them together with continuous awareness
campaign is essential in order to educate them to minimize sodium
consumption and to practice healthy eating.
Introduction: Intake of soy isoflavones has been shown to be beneficial in reducing
blood pressure, a known cardiovascular risk factor. This study investigated the
association between intake of soy isoflavones and blood pressure among multiethnic Malaysian adults. Methods: A total of 230 non-institutionalised Malaysians
aged 18-81 years were recruited through multi-stage random sampling from urban
and rural areas in four conveniently selected states. Participants were interviewed
on socio-demographics, medical history, smoking status, and physical activity.
Measurements of height, weight, waist circumference (WC), and blood pressure
(BP) were taken. Information on usual intake of soy foods was obtained using a
validated semi-quantitative food frequency questionnaire. Results: The mean
intake of soy protein of both urban (3.40g/day) and rural participants (3.01g/day)
were lower than the USFDA recommended intake level of soy protein (25.00g/day).
Urban participants had significantly higher intake of isoflavones (9.35±11.31mg/
day) compared to the rural participants (7.88±14.30mg/day). Mean BP levels were
significantly lower among urban (136/81mmHg) than rural adults (142/83mmHg).
After adjusting for age, gender, educational level, household income, smoking status,
physical activity, BMI and WC, soy protein intake was significantly associated with
both SBP (R2=0.205, β=-0.136) and DBP (R2=0.110, β=-0.104), whilst soy isoflavones
intake was significantly associated with SBP (β=-0.131). Intake of 1 mg of isoflavone
is estimated to lower SBP by 7.97 mmHg. Conclusion: Higher consumption of
isoflavones among the urban participants showed an association with lower levels
of SBP. Use of biological markers for estimating isoflavones levels is recommended
to investigate its protective effects on blood pressure.
There are several methods available for assessment of sodium intake, including dietary and urinary excretion, which are fraught with methodological difficulties. Therefore, the aim of this study was to validate dietary and urinary excretion methods against 24-hour urinary excretion method in estimating sodium intake in Malaysian adults. A cross-sectional study has been carried out between November to December 2015. About 1568 adults aged 18 to 59 years old have participated from 16 study sites located in the 13 states and two federal territories of Malaysia. The study collected basic socio-demographic data and habitual dietary intake by Food Frequency Questionnaire (FFQ). Respondents were also asked to complete a two-day food intake diary (2FD) and collect their 24-hours urine and spot urine using standard protocols. A total of 1116 adults successfully completed the survey, yielding a response rate of 71%. Sodium intake from 24-hour urine excretion was estimated at 2585.9mg/day which is above the recommendation by World Health Organization (WHO). The 2FD showed the nearest mean estimate to the reference method but the spot urine with Tanaka’s predictive equation showed the least bias. The estimation of sodium from spot urine alone or with Kawasaki’s predictive equation and FFQ method showed poor mean estimates and a large bias compared to the reference method. The 2FD and spot urine with Tanaka’s prediction equation can be good alternatives for estimating daily sodium intake at the population level but not at the individual level.
Nur Humaira’ Lau Abdullah, Zal U’yun Wan Mahmood, Norfaizal Mohamed @ Muhamad, Nazaratul Ashifa Abdullah Salim, Ahmad Nazrul Abd Wahid, Nor Dalila Desa, et al.
A glasshouse experiment was performed to evaluate the uptake of grasses viz. Napier and Vetiver
in radiophytoremediation of caesium-contaminated soil. The radiophytoremediation experiment
was designed according to the Randomized Complete Block Design (RCBD). The grasses were
grown in troughs filled with soil mixed with a known specific activity of 134Cs. Initial Cs activity and
activity after different cultivation time intervals of 1, 3, 6 and 9 months were analyzed using gamma
spectrometer direct measurement. The results showed the uptake of caesium by Napier and Vetiver
after 9 months with the transfer factors (TF) were 4.70 and 6.25, respectively. The remediation of
caesium from the contaminated soil during the study period was 98.08% for Napier and 98.21% for
Vetiver. Both grasses have been found to accumulate caesium, with Vetiver accumulating higher
than Napier. Thus, the present study suggests that Vetiver could be used as a potential plant for
radiophytoremediation of caesium.