Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Are you a little low? Failure to match energy intake with requirements is a possible cause of that ‘low blood sugar’ feeling.

15.08.2006
As many as one third of women experience symptoms which they believe are caused by low blood glucose (sugar), according to a recent survey conducted in Nottinghamshire (1).

The symptoms of such low blood glucose (or hypoglycaemia, as it is medically termed), include: irritability; faintness; tremor; hunger and anxiety. However, it is not known whether such women experience true (biochemically defined) hypoglycaemia or whether their symptoms are caused by some other factor. Hypoglycaemia, especially following a meal, is rare in otherwise healthy women.

Reporting in the British Journal of Nutrition (2), scientists from the University of Nottingham conducted a study on 30 healthy, non-obese women (aged 19-49 years) who reported symptoms they thought were due to hypoglycaemia on one or more occasions each week, plus 18 symptom-free controls. The women took finger-prick blood samples and measured their blood glucose three hours after breakfast and lunch and also recorded their diet and physical activity levels for a week. Women who reported experiencing hypoglycaemia also took blood glucose measurements whenever they felt symptoms.

Women who reported symptoms of hypoglycaemia after a meal had significantly lower blood glucose compared to women in the control group (4.7 vs 5.1mmol/L). Furthermore, blood glucose was significantly lower than controls when symptoms were being experienced (4.2 mmol/L). Biochemically, hypoglycaemia is defined by a blood glucose of 3.0mmol/L. or less; only seven out of 30 women reporting symptoms of hypoglycaemia actually had a blood glucose indicative of hypoglycaemia, suggesting that other factors may be causing symptoms. However, the observation that glucose values were significantly lower on occasions when symptoms were noted suggests some alteration in glucose balance in these women.

Sugar has been anecdotally cited as a cause of ‘reactive hypoglycaemia’ (blood glucose levels falling a few hours after a meal). In this study, there was no difference in sugar intake between the two groups. Fat and protein intakes were lower on days when women experienced symptoms of hypoglycaemia. Some common starchy foods, such as wholemeal bread or potatoes, raise blood glucose to a similar or greater extent to table sugar (sucrose).

Researchers, Ian Macdonald and Elizabeth Simpson from the University of Nottingham, point out that symptoms associated with hypoglycaemia after eating, such as tremor, anxiety, irritability and feeling faint are also seen in women with other conditions.

Exploring reasons for the symptoms of reactive hypoglycaemia; researchers suggest that energy imbalance may play a role in the aetiology.

On days when women experienced symptoms of hypoglycaemia they tended to be more physically active, when compared with the control group, and their reported energy intake did not meet predicted energy requirements. As exercise increases insulin sensitivity, the combination of increased physical activity and a mismatch of energy intake with needs, leads to a lower blood glucose and may be a contributing factor to hypoglycaemia.

Therefore, if you experience symptoms of reactive hypoglycaemia it appears important to match energy intake with requirements on a daily basis, especially if you are physically active.

Hannah Theobald | alfa
Further information:
http://lysander.ingentaconnect.com/vl=13740670/cl=11/nw=1/rpsv/cgi-bin/linker?ini=cabi&reqidx=/ij/cabi/00071145/v95n6/s14/p1127

More articles from Health and Medicine:

nachricht Hot cars can hit deadly temperatures in as little as one hour
24.05.2018 | Arizona State University

nachricht 3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>