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.
There are 1440 minutes in a day, so that is 0.74 to 0.88 kilograms per person per day, and multiplied by 6 billion (3 billion adult men, and 3 billion adult women), that comes to 4.8 billion kilograms per day. Now, this is only a rough estimate.