My Sister Is Complaining Of Fatigue, Anxiety, Low Temperature (96'F),

My sister is complaining of fatigue, anxiety, low temperature (96'F), and increased loss of hair. She is 67 y/o, and recently had a fairly complete lab work-up which showed that she had some kidney function issues, a higher than recommended cholesterol level with LDL higher than LDL even though her diet should not reflect this result. She doesn't eat red meat, and has plenty of nuts, avocados, fruit, and omega-3 fish in her diet. Also, her TSH level was within normal limits. She presently is being treated for HBP. What other possibilities could be causing her symptoms?