what's the buzz

what's the buzz

Overweight teens don’t reap longevity gains

A new study has found that people who were overweight as teenagers are not experiencing the same gains of today’s increased life expectancy rate like their slim counterparts.

One of the study’s authors, Amir Tirosh, of the Division of Endocrinology at the Brigham and Women’s Hospital in Boston, said that in studying the rate of death among adults younger than age 50, they found that there was no improvement among men who were overweight or obese as teenagers. In fact, the mortality rate among overweight and obese teenagers in the years 2000 to 2010 was as high as the rate observed in the 1960s and 1970s, he said.

The nationwide longitudinal cohort study in the US analysed records for more than 2.1 million teenagers who were evaluated for compulsory military service in Israel.
Researchers calculated the teenagers’ body mass index at the time of the evaluation. The study also combed death records to determine mortality rates among the study population.

They found mortality rates were 41 per cent lower among normal weight teenagers who were born in the 1980s than teens of a similar weight who were born thirty years earlier.

But among those who were overweight or obese as teenagers, there was no significant improvement in the survival rate over the course of four decades.
In addition, the study found overweight and obese teenagers had a higher risk of death before the age of 50. Among boys, even those with weights at the upper end of the normal range faced a greater risk of dying relatively early in adulthood.

Erectile dysfunction could be reversed sans medicines

Researchers have said that by focusing on lifestyle factors and not just relying on medication, men suffering from sexual dysfunction can be successful at reversing their problem.

The University of Adelaide researchers highlight the incidence of erectile dysfunction and lack of sexual desire among Australian men aged 35-80 years. Over a five-year period, 31 per cent of the 810 men involved in the study developed some form of erectile dysfunction.

Professor Gary Wittert, Head of the Discipline of Medicine at the University of Adelaide and Director of the University’s Freemasons Foundation Centre for Men’s Health, said that their study also found that a large proportion of men were naturally overcoming erectile dysfunction issues.

He said that the remission rate of those with erectile dysfunction was 29 per cent, which is very high. This shows that many of these factors affecting men are modifiable, offering them an opportunity to do something about their condition.
The lead author of the paper, Dr Sean Martin said, “Even when medication to help with erectile function is required, it is likely to be considerably more effective if lifestyle factors are also addressed.

Women burn more calories exercising after taking protein

A new study has suggested that women should follow a high-protein meal with half an hour of moderate exercise as it burns more calories as compared to exercising on an empty stomach.

Ashley Binns, a doctoral student in kinesiology and exercise science who led the study at the University of Arkansas, said the goal was to determine the interaction between the thermic effect of food and exercise on the body’s total energy expenditure, as measured in calories.

Thermic effect is the amount of energy that it takes to digest, store and utilize the food we eat.

Binns said that her team looked at the effects of protein consumption alone on total energy expenditure and protein consumption combined with exercise, and found that with exercise, there is a trend for a continued increase in caloric expenditure with higher protein consumption.

Additionally, the consumption of the high- or low-protein meals resulted in greater energy expenditure than the fasted state, she said. “That means that eating prior to exercise does provide fuel to burn, making us more like an energy-burning machine,” she asserted.

Ten “recreationally active” college-age women of normal body weight participated in the study. For their testing sessions, they were given a high-protein meal, low-protein meal, or no food at all, before walking on a treadmill.

Binns said that previous studies involving high- and low-protein diets have typically examined the athletic populations and morbidly obese individuals, but she wanted to see what the thermic effect of food was like for a normal individual, who didn’t have any metabolic disorders or medications that would affect their metabolism.

Exercise was key to the study, Binns said, because high-protein diets without exercise can lead to muscle loss. With just a high-protein diet and no exercise, the body heats up to break down the protein but what also happens is it breaks down muscle.