The genetics vs lifestyles of family members I've always found interesting, if I little frightening because my pool isn't that great. I grew up eating lots of meat and fresh vegetables, but with plenty of white rice. We were outside CONSTANTLY, always playing in the dirt, making shoes out of skunk cabbage, chasing chickens, throwing mud around, chopping logs, and generally running everywhere. My mom was super-pro-breasting feeding, so breast fed us all into toddlerhood. My mom grew up well below the poverty line and essentially homeless in a rural area, and lived off a lot of wild food her mom collected/hunted and bags of rice. My dad grew up on a farm as one of three boys in a British immigrant family, they ate a lot of potatoes, chicken, vegetables (HUGE garden), and lamb (they mostly raised sheep for lamb meat on their farm). Both of my parents were outdoors all the time and were generally rural-living semi-hippies who surfed, hiked, and skied their way through youth. So, pretty robust, health family on the outside, always a tan on our faces and muscles from all those family hikes (seriously- some families go for walks, we would go straight up mountain faces and my mom used to always have my little brother strapped to her back in addition, I remember as a 4 year old realizing it was a little wild).
Result: soooo much. My brothers and I all have allergies. Bad allergies- my little brother had many food allergies when he was little that he mostly grew out of. All of us had ridiculous hay fever that induced asthma in me and eczema in my two brothers. We all received an asperger's diagnoses at some point, though it was pretty much "dropped" for my one brother and I, while my little brother is still considered to have aspergers, and displays many of the typical behaviors you would associate with an autism spectrum disorder. My older brother and I suffered depression starting at a very young age. I have a heart disorder I have already had operated on twice before my 20th birthday. My sinuses basically didn't develop in utero, so they are these weird little pouches that I periodically have to get an operation on otherwise I get wild head aches. My mom had PCOS and possibly some other undiagnosed issue that resulted in one of her ovaries basically blowing when a cyst burst, and she almost bled to death before an emergency hysterectomy. My dad is missing a heart valve, so he's getting a pig valve put in next year. When giving birth to us my mom, and none of her six sisters, didn't dilate at all, leading the OB/GYN to believe there must be a genetic nerve defect of some sort in play, so all first borns from my mothers family were emergency you-going-to-die C-sections. My grandfather, great grandmother, great grandfather, and great aunt all died of cancer- for the females it was breast cancer.
Positive sides: we all have great skin (no acne to speak of, except the occasional zit), we are naturally muscular (the stocky type, both sides of my family), great teeth (no cavities!), no one that we know of on either side has had a heart attack (despite the heart valve defect, and my nerve defect), and no diabetes. That being said, we don't know my mother's father (arrested and institutionalized when she was young, so clearly not in touch) and his history.
It is interesting to look at your own family, and I just have to wonder how it will all work out. I don't know if any of our ailments could have been fixed or alleviated with a different diet- who knows how much was genetic! How will it all play out? My grandparents lived long lives, and had few issues- but what about my future children? Will they be plagued with allergies and eczema no matter what? Who's to say?