Shutter Speed s. Many of today's SLR camera s offer action-stopping shutter speed s of 1/2000 sec. or faster. None of the point-and-shoot models come close, although some do offer speed s fast enough to stop most action.
According to the National Institute of Health, research suggests that taking between 20 to 50 milligrams of DHEA supplements daily should be sufficient and safe for most adults over the age of 30. Individual needs will vary, but less is usually better, especially at first.
The following doses have been studied in scientific research: BY MOUTH 1  : In postmenopausal women and in elderly men: Doses of 25-50 mg daily are commonly used. 2  For treatment of schizophrenia: Increasing doses of DHEA of 25 mg daily for 2 weeks, 25 mg two times daily for 2 weeks, and 50 mg two times daily for 2 weeks. Withdrawal symptoms. 2  Early research shows that taking 100 mg of DHEA daily together with standard therapy for 12 months does not improve symptoms of drug withdrawal in people addicted to heroin. 3  Taking 100 mg of DHEA daily for 12 weeks also did not improve symptoms of cocaine withdrawal.