<almonds beneficial for cardiovascular health new research result>.

 

 

<Eating almonds may help improve the heart and nervous system's responses to mental stress>

<Research suggests that eating almonds in place of typical snacks may diminish the drop in heart rate

         variability that occurs during mental stress, thereby improving cardiac function.>

 

This dietary strategy has the potential to increase cardiovascular resilience to mental stress, along with

other heart health benefits of consuming almonds such as lowering LDL-cholesterol and improving the

function of blood vessels.

The study by Dr Wendy Hall and Dr Sarah Berry, both from the School of Life Course Sciences,

measured HRV in participants undergoing a mental stress challenge and saw improved measures of

HRV in participants who had been replacing typical snacks with almonds over a six-week period. The

study was funded by the Almond Board of California.

Mental stress is among the psychosocial factors thought to contribute to cardiovascular disease (CVD)

risk. Heart rate variability (HRV), a measure of the fluctuation in time intervals between consecutive

heartbeats, is an important indicator of the cardiovascular system’s response to stress and it is thought

that lifestyle factors including physical activity and diet might impact HRV. Higher HRV represents greater

adaptability of the heart in response to environmental and psychological challenges, while low HRV is

linked to cardiovascular disease and sudden cardiac death.

This new research finding was part of the ATTIS study a 6-week randomized control, parallel-arm trial,

where participants with above average cardiovascular disease risk consumed a daily snack of almonds or

a calorie-matched control snack providing 20% of each participants’ estimated daily energy needs.

In this study, researchers measured participants’ real-time heart rate (HR) and heart rate variability (HRV)

at rest (lying down for 5-minute periods) and during a Stroop test (in which participants were asked to

read colored words i.e. say “red” in a green font) to simulate short period of mental stress.

During acute mental stress, participants in the almond group showed better heart rate

regulationcompared to the control group, indicated by statistically significant differences in high frequency

power, which specifically evaluates beat-to-beat intervals (a measure of HRV).

This study shows that the simple dietary strategy of swapping almonds for typical snacks may

bolster resilience to the adverse cardiovascular effects of mental stress by improving

regulation of heart rate. We found that the stress-induced reduction in heart rate variability

was lessened in the almond group compared to control following the dietary intervention,

which indicates a cardiovascular health benefit. It is useful to think of having a higher HRV as

the heart being able to switch gears faster in response to demands on the body, which means

more cardiac resilience and flexibility during periods of stress. In the long term, this is

beneficial for cardiovascular health.– Dr. Wendy Hall, PhD, co-principal investigator from the

School of Life Course Sciences

Dr Sarah Berry, PhD, from the School of Life Course Sciences, added:“These results are particularly

timely given the heightened levels of stress many of us are experiencing, alongside increased snacking,

from working at home."