Diet : Fitness and Exercises : Body Mass Index

Body mass index is the ratio of weight to height to estimate body fat. It is advisable to use Body mass index along waist to hip ratio to get complete picture of your weight status. Body mass index is particularly helpful for identifying children and adults at risk of overweight. But it not gives completely accurate information.

The formula for Body mass index is WEIGHT (KG)/HEIGHT (MT2)

BMI	Category
Less than 18.5	Underweight
18.5 to 24.9	Normal weight
25 to 30	Over weight
More than 30	Obese

Source :- Click Here

Central nervous system and Brain : Depression

A depression is group of symptoms that reflects a sad and/or irritable mood exceeding normal sadness and grief.

The following indicators for depression count when they last for more than 2 weeks:

• Hopelessness- unrelenting sad, anxious or ‘empty’ mood

• Insomnia, interrupted sleep or sleeping too much

• Reduced appetite and/or weight loss; increased appetite or weight gain.

• Loss of interest in ones favorite activities

• Inability to find interest in new activities or hobbies/relationship.

• Edginess or irritability

• Feeling of disorientedness

• Difficulty concentrating and remembering

• Feeling of guilt and worthlessness

• Suicidal thoughts.

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Fatty liver 'independently increases Type 2 diabetes risk'

Eat at the right time of day if you actually want to shed those extra pounds, for an American study so suggests.

Researchers at Northwestern University have found that eating at irregular times influences weight gain.

They say that eating in the middle of the night, when the body wants to sleep, is not right because the regulation of energy by the body's circadian rhythms may play a significant role.

"How or why a person gains weight is very complicated, but it clearly is not just calories in and calories out," said Fred Turek, professor of neurobiology and physiology in the Weinberg College of Arts and Sciences and director of the Center for Sleep and Circadian Biology.

"We think some factors are under circadian control. Better timing of meals, which would require a change in behaviour, could be a critical element in slowing the ever-increasing incidence of obesity," Turek added.

During the study, the researchers observed that mice that were fed a high-fat diet during normal sleeping hours gained significantly more weight than those given the same type and amount of food during naturally wakeful hours.

Referring to recent studies, the researchers said that the body''s internal clock regulates energy use and that is why the timing of meals might be crucial to balancing caloric intake and expenditure.

They say that their findings may have implications for developing strategies to combat obesity in humans

"One of our research interests is shift workers, who tend to be overweight. Their schedules force them to eat at times that conflict with their natural body rhythms. This was one piece of evidence that got us thinking -- eating at the wrong time of day might be contributing to weight gain. So we started our investigation with this experiment," said lead author Deanna M. Arble, a doctoral student in Turek''s lab.

The researchers next plan to investigate the molecular mechanisms behind their observation that eating at the "wrong" time can lead to weight gain.

The findings of their latest study have been detailed in the online edition of the journal Obesity.