刺激血清素分泌
Some people become gloomy when the weather gets cold and damp.
天氣陰冷時有些人會變得憂鬱，
gloomy(adj.)陰沈的;愁悶的;憂鬱的The weather over the past few days has been gloomy.damp(adj.)潮濕的
The fact that there are no more long weekends until the end of the year can make them feel depressed.
直到年底都沒有連假這件事讓人意志消沈。
the fact that...=引導名詞子句帶出某件事實depressed(adj.)憂鬱的;沮喪的;消沈的depress(v.)使...消沈;憂鬱;沮喪depression(n.)憂鬱症
In fact, these people are experiencing a form of depression known as Seasonal Affective Disorder, “SAD” for short, which explains the symptoms clearly.
事實上，這些人都出現了季節性憂鬱症，簡稱正好就是「SAD」，清楚解釋了該憂鬱症的症狀。
experience(v.)經歷for short=簡稱為...symptom(n.)症狀develop symptoms of...=出現某病的症狀
People living in colder areas are more likely to develop the symptoms.
生活在較冷地區的人們更有可能出現該症狀。
be likely to RV=可能...
Having a depressed mood, loss of energy, eating and sleeping too much are the symptoms of SAD due to the decrease of serotonin, a chemical which regulates our moods.
情緒低落、失去動力、暴食與嗜睡都是季節性憂鬱症的症狀，因為體內用來調節情感的血清素減少了。
due to=because of=因為;由於regulate(v.)調節;調控
Doing some low-intensity exercise such as walking or cycling can help you cope with depression.
從事散步或騎腳踏車這類輕度運動有助於排解憂鬱情緒。
low-intensity exercise=輕度運動high-intensity exercise=重度運動cope with sth.=應對;解決;處理某事cope with sb.=與某人交涉cope with stress in the workplace
Also, you can try to keep in touch with your family and friends.
此外，你可以試著多跟親友保持聯繫。
keep (stay) in touch with sb.=be in contact with sb.=與某人保持聯繫lose contact with sb.=失去某人的聯繫或音訊
Seeking support from someone you trust has a positive effect on your mental health.
從信任的人身上獲得支持對心理健康有正面的效果。
seek(v.)尋求support(n.)(v.)支持One-third of people support the death penalty.has an effect on...=對~有效;產生作用或影響mental(adj.)心理上的;精神上的
Lack of exposure to sunlight leads to vitamin D deficiency and since the daytime in winter is shorter, there is a greater chance of it happening during this season.
由於冬季的白晝較短，人體缺乏日照導致維他命D不足，因此在冬季期間更有可能缺乏維他命D。
lack of sth.=缺乏~lead to=導致=result inSmoking can lead to lung cancer.deficiency(n.)缺乏;不足
Going outside and getting daylight in the morning can increase your levels of vitamin D.
早晨外出曬曬太陽可以增加體內的維他命D。
increase(v.)(n.)增加;提高;促進=boost
Keeping a diary and writing down three things you appreciate in a day can also help to fight depression.
寫日記並記下一天中三件令你覺得感激的事，也有助於對抗憂鬱症。
keep a diary=寫日記appreciate(v.)感謝;感激
Meditation is a good way to find peace of mind and it boosts the serotonin in our bodies.
冥想是個平心靜氣的好方法，它可以刺激血清素的分泌。
peace of mind=內心的平靜
However, you will still need to seek therapy if necessary.
不過，若有需要的話還是得尋求心理諮商。
therapy(n.)治療;療法radiation therapy=輻射治療speech therapy=言語治療therapist(n.)治療師