The reason for this really is why these adjustments to diet also change or get a new woman's vaginal environment and PH. If that environment is alkaline, it's more friendly towards the Y or boy producing sperm. If it's acidic, it is quite tough on those self same Y sperm but friendly for the X's (or those that produce girl babies.) What are some of these unwanted signs of aging? They can include osteoporosis or weakened bones, loss of muscle, weight gain that is mostly fat, bodily aches and pains, fatigue, sweating, hot flushes, decreased libido and poor sexual performance, deteriorating memory, irritability and even depression. The first basic is you are what you eat! The key sex hormone which declines with age and great herbs to boost levels naturally are - Horny Goat Weed which both increases testosterone and thyroid hormone to normal, improving sex drive.