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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Hyperopia (farsightedness). In the uncorrected top figure, the image would come into focus behind th Hyperopia (farsightedness). In the uncorrected top figure, the image would come into focus behind th
Alterable and unalterable risk factors for hypertension. Alterable and unalterable risk factors for hypertension.
Antiparkinson Drugs Focus on Restoring Dopamine Function and Blocking Cholinergic Activity in the Ni Antiparkinson Drugs Focus on Restoring Dopamine Function and Blocking Cholinergic Activity in the Ni
Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h
Positive and Negative Symptoms of Schizophrenia Positive and Negative Symptoms of Schizophrenia
Control of thyroxine secretion through negative feedback. Control of thyroxine secretion through negative feedback.
Video: Hormonal regulation of blood pressure - RAA system

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