Category: Persuasion

Why depressed people cannot hold on to positive memories and emotions.

Depressed people have 30 percent worse memory on certain tasks, research finds.

Depressed mood stops people from holding information in their memory.

This may be why depressed people can find it hard to hold on to positive memories and emotions.

It can also help to explain how depression develops and persists over time.

In depressed people, memory is easily ‘hijacked’ by depressing thoughts, to the exclusion of all else.

Professor Bart Rypma, who led the study, said:

“People with depression or even healthy people with a depressed mood can be affected by depressive thoughts.

We have known that negative thoughts tend to last longer for those with depression.

However, this study is unique in showing that, these thoughts, triggered from stimuli in the environment, can persist to the point that they hinder a depressed person’s ability to keep their train of thought.”

In the study, 75 people read sentences that sometimes had depressive features.

The results showed that people who were depressed did 30 percent worse in a memory test when reminded of a depressing thought first.

Dr Nick Hubbard, the study’s first author, said:

“We all have a fixed amount of information we can hold in memory at one time.

The fact that depressive thoughts do not seem to go away once they enter memory certainly explains why depressed individuals have difficulty concentrating or remembering things in their daily lives.

This preoccupation of memory by depressive thoughts might also explain why more positive thoughts are often absent in depression; there simply is not enough space for them.”

Professor Rypma said:

“Interventions such as mindfulness-based cognitive therapy are quite successful in empowering depressed people to recognize and better regulate the content of their thoughts.

Our goal is to continue to study how such therapeutic approaches can alter the depressed brain and how these alterations might result in better memory and outcomes for persons with depression.”

The study was published in the Journal of Affective Disorders (Hubbard et al., 2016).

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This diet is a very effective weight loss strategy for diabetic patients and those with prediabetes.

People with type 2 diabetes are often obese or overweight and have high blood pressure.

However, to combat this metabolic syndrome, the first step is to lose weight.

There are several effective diet plans to help people with this condition but what dieting strategy works best remains unclear.

A study on adults with type 2 diabetes has found that time restricted eating (TRE) is more effective than the daily calorie restriction (CR) strategy.

TRE is a type of intermittent fasting that only allows an eating window of 8 to 12 hours and water fasting during the remaining hours each day.

The TRE group in this study were allowed to eat between noon to 8pm while the other group followed the CR approach.

Participants on the TRE regime lost more weight and body fat, and saw an increase in HDL (good cholesterol) compared to those who ate fewer calories.

However, blood sugar levels were similarly improved in both groups.

Ms Vicky Pavlou who presented this research at the annual meeting of the American Society for Nutrition, said:

“Many people find counting calories very hard to stick to in the long term, but our study shows that watching the clock may offer a simple way to decrease calories and lose weight.

Although time-restricted eating is becoming increasingly popular, no other studies have looked at an eight-hour eating window in people with type 2 diabetes.”

Professor Krista Varady and the team wanted to know if diabetic people would gain more benefits from the TRE strategy than the CR diet plan.

57 overweight and obese adults with type 2 diabetes were divided into calorie restriction, time-restricted eating, and control groups.

The TRE group were allowed to eat for 8 hours (noon to 8 p.m.), the CR group could eat at any time but counted their daily calorie intake, but the control group could eat whenever and as much as they liked.

When compared with the control and the CR groups over six months, participants on the TRE diet lost about 4 percent of their weight, equivalent of losing 5 kg for a person weighing 125 kg.

Haemoglobin A1c (HbA1c) levels were tested for blood sugar, the normal range is 4 to 5.6 percent but the levels in people with diabetes were 6.5 percent.

The results show that the HbA1c levels for the TRE group reduced by 0.91 percent and for the CR group by 0.95 percent.

To see any improvement in cardiometabolic risk factors a minimum 5 percent weight loss is required.

Since this was not achieved, the team could not assess them.

Ms Pavlou added:

“Our study shows that time-restricted eating can be a good alternative for those with type 2 diabetes who want to lose weight and improve their blood sugar.

However, there are multiple types of medications for those with type 2 diabetes, some of which can cause low blood sugar and some that need to be taken with food.

Therefore, it is important to work closely with a dietitian or doctor when implementing this dieting approach.”

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The study was…

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Cognitive ability is higher in this personality type.

Laid back and unhurried people tend to have a higher IQ, psychological research finds.

Intelligent people become more laid back because they can do things quicker than others, so do not need to rush, the authors speculate.

High IQ people also have a tendency towards procrastination — perhaps because another benefit of higher intelligence is being able to start tasks later.

The study also found that higher IQs was linked to be cautious and being a perfectionist.

This may be because being a perfectionist takes longer and people with higher IQs have the patience to wait until the job is done right.

The conclusions come from a study of 722 people who were given personality and IQ tests.

The personality tests focused on conscientiousness, one of the five major traits of personality.

Different aspects of conscientiousness were examined, including being cautious, deliberate, orderly and having a tendency to procrastinate.

The results revealed a consistent link between being unhurried and having a higher IQ.

The study’s authors explain:

“The common feature of these three characteristics (procrastination, perfectionism and caution) is timing or hurriedness.

One possible interpretation of our results is that people with greater cognitive ability tend to be less hurried in their general approach to life’s activities.

This interpretation implies both positive aspects (e.g., the cautiousness involved in checking details, delaying acting, and continuing with tasks until their product is “perfect”) and negative ones (e.g., the tendency to procrastinate).”

The link between procrastination and higher IQ is down to greater abilities, the authors think:

“This suggests a slower internal pace among more intelligent people that more easily allows for interruptions or the incorporation of new information while completing a task.

This is not to imply that more intelligent people are physically slower in their tasks, as in fact they appear to be faster at most tasks.

Rather, we are suggesting that one way in which those demonstrating higher levels of cognitive ability may differ from those exhibiting lower levels of cognitive ability is a behavioral tendency to pace their work or other tasks at less than their maximum potential ability.”

The study was published in the Journal of Personality Research (Rikoon et al., 2016).

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The daily amount of Ozempic that lowers blood sugar and increases weight loss.

People with type 2 prediabetes don’t respond to insulin and as the condition progresses, lowering blood glucose and losing weight becomes difficult.

A healthy diet and exercise could certainly reduce the risk of diabetes but when it comes to medication there are many ups and downs.

Semaglutide (marketed as Wegovy, Rybelsus and Ozempic) is a glucagon-like peptide-1 (GLP-1) receptor agonist that causes the body to produce more insulin.

The drug has been found to help diabetic patients in losing weight as well as reducing blood sugar levels.

While the drug keeps gaining attention, the effective dosage of oral semaglutide has been challenged.

Semaglutide dosage study

A study compared the effectiveness of the currently approved 14 milligrams (mg) dose in adults with 25 mg, or 50 mg per day for 52 weeks.

The results showed that taking a 25 mg or 50 mg semaglutide tablet once a day is superior to the 14 mg dosage in reducing blood sugar levels and in increasing weight loss.

At the end of study period, participants who were on 50 mg of oral semaglutide had lost 17.5 pounds (8 kg), those on 25 mg had lost 14.8 pounds (6.7 kg), and those on 14 mg had lost 10 pounds (4.5 kg).

Semaglutide suppresses appetite so as the dosage increases there will be less desire for eating which results in losing more weight.

Professor John Buse, the study’s lead author, said:

“Low doses of GLP-1 receptor agonists are really powerful for reducing A1C, or the average glucose in the blood.

Whereas, the higher doses that are really good for weight reduction.

On average, patients lost eight kilograms (17.5 lbs) at 50 milligrams, which is nearly twice as much weight loss that we saw with the lowest dose.”

The common side effects for semaglutide are nausea, vomiting, diarrhoea, or constipation which occurred more often with taking daily dosages of 25 mg or 50 mg.

The trial involved more than 1,600 adults with type 2 diabetes who were randomly divided into three groups by the daily dosage of oral semaglutide; 14 mg, 25 mg, and 50 mg.

The haemoglobin A1c (HbA1c) test reflects blood glucose levels and the A1c for adults with diabetes is suggested to be below 7 percent.

In this study, participants A1c levels were between 8 to 10.5 percent.

They found that those who received either 25 mg or 50 mg of oral semaglutide were more likely to reach the goal (A1c level of below 7 percent).

Related

The study was published in the The Lancet (Aroda et al., 2023).

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Around one-quarter of people may have a vitamin B12 deficiency.

Memory and thinking problems can be a sign of vitamin B12 deficiency, research finds.

Similarly, people experiencing a mood disorder, like depression, can also be deficient in vitamin B12.

The body uses vitamin B12 to make red blood cells and to keep the nervous system healthy.

Around one-quarter of people may have a vitamin B12 deficiency

Other, more common signs of vitamin B12 deficiency include feeling tired, experiencing muscle weakness and being constipated.

Memory and thinking problems can strike from an early age.

One study of Colombian children found that children deficient in vitamin B12 were at more than twice the risk of repeating a grade.

Deficient children were also almost twice as likely to be absent from school as those who were not.

The study included 3,156 students aged 5-12 who were attending primary schools in Bogotá, Colombia.

They were tested for a range of nutritional markers, including B12, folate, zinc and vitamin A.

The results showed that 15 percent were marginally deficient in vitamin B12.

Only a deficiency in vitamin B12 was linked to a child having to repeat a grade.

Dr Eduardo Villamor, who led the study, said:

“Vitamin B12 is necessary for adequate brain development.

Deficiency very early in life or in old age has been linked to cognitive and behavioral problems, but it was not known whether it could be related to academic difficulties during school age.

Grade repetition and school absenteeism are important outcomes because they predict school dropout and impair children’s options for educational advancement and development.”

Vitamin B12 deficiency is easy to rectify with supplements or by dietary changes.

Vitamin B12 levels can be boosted through supplementation or by eating foods such as dairy, liver, salmon and eggs.

The study was published in The Journal of Nutrition (Duong et al., 2015).

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The feature is also linked to higher genetic fitness.

Longer legs make a man more attractive to women, research finds.

It’s not just about being taller, though.

Instead, it is about the ratio of leg to total height.

In other words, men with a slightly higher ratio of leg to body look more attractive to women.

The reason is that a slightly longer leg (in relation to the whole body) is a sign of genetic fitness.

For the research over 800 heterosexual women were shown a series of computer-generated images of men with slightly different leg and arm lengths.

While long arms weren’t much of a turn-on, the slightly longer leg was a winner.

The leg shouldn’t be excessively long, though, just a little bit more than normal.

Short legs are linked to heart disease, diabetes and dementia.

Very long legs are often linked to genetic problems.

The study’s authors explain their findings in evolutionary terms:

“From the perspective of evolutionary biology, attractiveness judgements reflect the biological fitness of a prospective mate (i.e. their ability to survive and reproduce in their environment), because a high-fitness mate is likely to be better able to provide resources, care, and protection, to be less likely to transmit harmful pathogens, and to pass on ‘good genes’ to the offspring.”

In case you want to check your own legs, the average leg-to-body ratio is 0.491.

The leg is measured from the hip to the ankle, then divide this by your height.

The magic number for the ‘perfect’ ratio is around 0.506.

The study was published in the journal Royal Society Open Science (Versluys et al., 2018).

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Fewer small meals or intermittent fasting, which is more effective for losing weight?

Portion control or simply eating fewer calories appears to be a better strategy for weight management than intermittent fasting.

Eating less frequently and having smaller meals each day will strongly influence weight loss compared to fasting for a certain number of hours a day, a study has found.

Some studies have suggested that time‐restricted eating, also known as intermittent fasting, can boost circadian rhythms and energy metabolism.

However, the current study didn’t find that limiting meals for a specific period of time can helped anybody lose weight in the long run.

The research team examined the relationship between time from first to last meal with weight change.

For this study, 550 obese adults were enrolled, of which 80 percent were white, most participants had a college or higher degree.

The follow-up period was 6 years.

They used a mobile application to report eating, sleeping, and wake up time across 24 hours.

This information allowed the team to calculate the interval from waking to first meal, between meals, and from the last meal to sleep.

Summary of findings

• Meal timing had no effect on weight change over the long-term.
• Total daily number of large meals (more than 1,000 calories) was linked to weight gain over the six-year follow up.
• Total daily number of medium meals (between 500 to 1000 calories) was associated with weight gain over follow‐up time.
• However, fewer small meals (less than 500 calories) was linked to weight loss over the follow-up period.
• The time intervals from being awake to first meal was 1.6 hours, from first to last meal was 11.5 hours, and from last meal to sleep was 4 hours.
• Sleep duration on average made up 7.5 hours of the 24-hour window each day.
• The greatest risk factors for weight change were daily calorie intake and meal frequency rather than meal timing.

Data suggests that nearly 70 percent of Americans are either overweight or obese, a serious risk factor for cardiovascular disease and diabetes.

Therefore, improving diet and lifestyle, including eating healthy foods, lower calorie intake, smaller sized meals, more physical activity, less stress, and better sleep can help people to battle obesity.

According to the American Heart Association, irregular eating patterns and changing meal frequency are not favourable for weight control and heart health.

The study was published in the Journal of the American Heart Association (Zhao et al., 2023).

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Neurological health is improved when these muscle groups move more.

Using the leg muscles helps to grow healthy new brain cells, research discovers.

The legs do not just receive messages from the brain about when to move.

Leg movements — especially those bearing weight — send vital messages back to the brain.

The new brain cells created by movements of large muscle-groups in our legs help us deal with new challenges and adapt to stress.

The study provides an insight into why patients with diseases that limit their mobility can rapidly decline.

Dr Raffaella Adami, the study’s first author, said:

“Our study supports the notion that people who are unable to do load-bearing exercises — such as patients who are bed-ridden, or even astronauts on extended travel — not only lose muscle mass, but their body chemistry is altered at the cellular level and even their nervous system is adversely impacted.”

The conclusions come from a study in which mice’s hind legs were restricted in movement for 28 days.

This restricted the growth of new brain cells by 70%.

Dr Adami said:

“It is no accident that we are meant to be active: to walk, run, crouch to sit, and use our leg muscles to lift things.

Neurological health is not a one-way street with the brain telling the muscles ‘lift,’ ‘walk,’ and so on.”

The study was published in the journal Frontiers in Neuroscience (Adami et al., 2018).

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Treating this condition in mid- or later life can halt dementia.

Medication to lower blood pressure reduces the risk of dementia by around 13 percent, the strongest evidence yet finds.

Currently, there are very few dementia treatments on the market, therefore finding that lowering blood pressure can significantly reduce the disease or stop its progression is of practical benefit.

Dr Ruth Peters, the study’s first author, said:

“Given population ageing and the substantial costs of caring for people with dementia, even a small reduction could have considerable global impact.

Our study suggests that using readily available treatments to lower blood pressure is currently one of our ‘best bets’ to tackle this insidious disease.”

About 60 million people live with dementia and the condition is rapidly increasing amongst older population at such a rate that it will have tripled by 2050.

According to Dr Peters, while numerous clinical trials have shown the beneficial effects of lowering blood pressure on heart disease and stroke risk, its effect on dementia has not been identified.

Dr Peters said:

“Most trials were stopped early because of the significant impact of blood pressure lowering on cardiovascular events, which tend to occur earlier than signs of dementia.”

The team analysed five trials, each using a different treatment to lower blood pressure of 28,000 older adults across 20 countries.

The participants were followed over four years.

Dr Peters said:

“We found there was a significant effect of treatment in lowering the odds of dementia associated with a sustained reduction in blood pressure in this older population.

Our results imply a broadly linear relationship between blood pressure reduction and lower risk of dementia, regardless of which type of treatment was used.”

The authors believe this finding can help improve public health strategies in decreasing the risk of dementia and its progression.

Dr Peters said:

“Our study provides the highest grade of available evidence to show that blood pressure lowering treatment over several years reduces the risk of dementia, and we did not see any evidence of harm.

But what we still don’t know is whether additional blood pressure lowering in people who already have it well-controlled or starting treatment earlier in life would reduce the long-term risk of dementia.”

The study was published in the European Heart Journal (Peters et al., 2022).

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Larks tend to rise earlier while owls stay up late — each type extends the part of the day at which they feel their best.

Morning types or ‘larks’ have superior verbal IQ, research finds.

Morning types are people who prefer to do demanding things earlier in the day, whereas evening types consider their best time to be later on.

Naturally, larks also tend to rise earlier while owls stay up late — each type extends the part of the day at which they feel their best.

The results come as a rebuff to other studies that have found the reverse, that it is owls that have the IQ advantage.

Dr Stuart Fogel, study co-author, how his study is different:

“Once you account for key factors including bedtime and age, we found the opposite to be true, that morning types tend to have superior verbal ability.

This outcome was surprising to us and signals this is much more complicated that anyone thought before.”

The study included 61 people whose ‘morningness’ or ‘eveningness’ was assessed, along with their cognitive abilities.

The results showed that people who were at their best in the morning scored higher on tests of verbal IQ.

Verbal IQ refers to being able to use language to achieve goals.

Critically, the researchers had to account for the fact that young people as a group tend to be evening types.

Young people tend to be evening types

The fact that young people tend to be evening types may make it harder for them to get the best out of the school day, said Dr Fogel:

“A lot of school start times are not determined by our chronotypes but by parents and work-schedules, so school-aged kids pay the price of that because they are evening types forced to work on a morning type schedule.

For example, math and science classes are normally scheduled early in the day because whatever morning tendencies they have will serve them well.

But the AM is not when they are at their best due to their evening type tendencies.

Ultimately, they are disadvantaged because the type of schedule imposed on them is basically fighting against their biological clock every day.”

The study also found that people with regular daily habits tended to perform the best.

Dr Fogel said:

“Our brain really craves regularity and for us to be optimal in our own rhythms is to stick to that schedule and not be constantly trying to catch up.”

The study was published in the journal Current Research in Behavioral Sciences (Gibbings et al., 2022).

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