iron
Veggies and fruits are often lacking in teen diets.
magnesium
chromium
Scurvy can affect individuals of any age, but it is most commonly seen in older adults, individuals with poor diets lacking in vitamin C, or those with certain medical conditions that affect nutrient absorption.
what nutrients commonly present a problem in the diets of vegans
Diets lacking in carbohydrates lead to increased amino acid utilization for fuel. Nutrition 200 ~jm~
You can provide a mineral salt block free choice - your horse will generally eat enough of the block to supplement the missing minerals. You can purchase a mineral salt block at most farm supply stores - they will be the reddish-brown blocks next to the white pure salt blocks. In addition to the above answer you can also buy a 'ration balancer', which is a pelleted feed that can be given to horses to make up for what they are lacking in their diets. Research shows that licking blocks (Salt or mineral) can cause a horses tongue to become raw and therefore will decrease their use of it over time, which means they will become deficient in those minerals again.
I'm just an electrician, but I believe certain people won't advocate those diets because the average person thinks that these diets are "carte-blanche" tickets to eating large amounts of fatty meat - not the true intent of either diet...
Yes, there are specific diets made for particular blood types. They are commonly referred to as 'Blood Type Diets' and are based on the idea that certain foods or food groups agree better with certain blood types.
Regular, low-sodium, diabetic, bland
High protein diets may result in the excretion of calcium. What you eat can affect calcium excretion and absorption. Less excretion of calcium in the urine can lead to kidney problems and osteoporosis.
Typical American diets vary between 1200 to 2500 calories a day.