|
|
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
![Vice President Richard M. Nixon and Soviet leader Nikita Khrushchev engage in a “kitchen debate” ...](https://biology-forums.com/gallery/47/medium_632960_01_12_16_11_27_11_241861978.jpeg)
![A seemingly anonymous well-wisher from the crowd greets President Bill Clinton. When Clinton was ...](https://biology-forums.com/gallery/47/medium_646588_06_12_16_2_50_56_242311339.jpeg)