Utterly and totally and completely false. Read Kinsey, Dr. Ruth (Westheimer), or any other solid and knowledgeable expert on sex for information that does not let a political-religious agenda get in the way of science.
Answer: To date, no research has been done to investigate the effects of spinal manipulation, or any other form of therapy provided by doctors of chiropractic, on memory or mental acuity. I am sure that there are some patients of chiropractic who would claim to have had improvements in memory or other mental function, but this is what is refered to as anecdotal evidence, and is not sufficient to warrant recommending chiropractic treatment for these conditions. Thus, at this point the best answer would be - no one knows.
Answer: A great way to have "better" memory would be to consume fish. Fish have special vitamins and minerals that help the brain immensely, which may also help prevent memory loss and help better the brain in different ways. Another reason why fish is called "brain food".
Answer: Lucy and her dad went to get a pineapple for his birthday and they were in a car accident and Lucy had a bad head injury that made it so that she could only remember a day and then her memory was gone
Yes. Long-term addiction can cause memory loss. Google "memory loss" and "opiates." But opiates can also cause anterograde amnesia or temporary short-term memory loss. If one ingests to much of an opiate the can enter a semi-conscious state where they are awake but incomprehensible. At this point they will not for memories. This effect is temporary but the user will never recover the memories lost while he was under the influence of said opiate.
Answer: A sudden change like that would need referral to a doctor who may be able to diagnose a treatable condition eg infection, subdural bleed etc. If nothing reversible found then theres lots of advice available through healthcare providers.