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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
On average, the stomach produces 2 L of hydrochloric acid per day.
Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
![Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_48_57_9406640.jpeg)
![Two regions of the brain involved in sleep. The anterior hypothalamus and adjacent basal forebrain ...](https://biology-forums.com/gallery/30/medium_548020_07_06_17_2_21_52_30404869.png)