1 Preseed maintains this alkalinity while other vaginal lubricants tend to have pH values below 7.0 and as low as 3.5 (very acidic and deadly to sperm.  Osmolality Ã¢â¬â Semen has a specific particle concentration that keeps sperm motile and healthy.
Causes of instantaneous or sudden death. Instantaneous or sudden death may result from dysfunction/abnormalities of the heart and its vessels, noncardiac vessels, pulmonary system, and central nervous system (CNS).
Sudden-onset and severe hypercalcemia may cause dramatic symptoms, usually including confusion and lethargy, possibly leading quickly to death. Serum calcium levels greater than approximately 15 mg/dL usually are considered to be a medical emergency and must be treated aggressively.